ALERT NEWSLETTER – June 2015

Hi everyone,

I hope all is going well & that you are finding a nice cool spot out of the pre-summer heat and showers.

The biggest ALERT news of the month concerns our recent elections. At our last meeting the ALERT elections were held for the 2016 – 2017 term.

The Officers for 2016 – 2017 are:

President: Dale Chambers KD4QHZ
Vice-President & Membership: Roger Parsons KK4UDU
Secretary: Justin Glass N0ZO
Treasurer: Johnny Knobloch KJ4OPX
NWS Liaison: Russell Thomas KV4S

Per the ALERT Bylaws our new Officers will assume their positions at the July 12 meeting.

Thanks to all of our new officers for their service to our organization!

One thing which will remain the same is our newsletter. I will continue on as the Editor-In-Chief, and hopefully will be able to provide interesting items for your enjoyment.

I will also continue as the Net Manager of the ALERT Sunday Nite Net. If you have not checked in to our net I invite you to join us. We meet at 7PM Sunday on 146.88 MHz PL 88.5 hz.

I hope to see you there!

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Why I Joined ALERT

This feature, which I hope will become a regular feature, will give members an opportunity to share their stories of why they are members of ALERT. Why did you become a member of ALERT? What lessons have you learned?

Our first story is from Ronnie WX4RON

My name is Ronnie King and my call sign is WX4RON. Here is ‘my’ story: I initially joined ALERT in 2011 after renewing my license in October of 2010. I was trying to get involved in as many ham radio groups as I could because i was new to the Jefferson county area as a resident and as a ham, living in Hoover, starting in August 2009. I had Joined The BARC, the SCARC and I think that I joined the SSARC also.

However, I stayed on with ALERT because I liked the group of hams from many clubs who had partnered together to make the Organization known as ALERT. I liked the staff at the NWS / BMX Office and as I became familiar with all of these people, it was evident to me that we all had the same common goal: the safety and survival of our communities. I was impressed with the skills and cohesiveness displayed from everyone involved in ALERT and the NWS / BMX office so much that I wanted to become an active part of this group.

It has been my privilege and Honor to be a part of ALERT for the past 4 years roughly. Thank you everyone for allowing me to be there / here.

(Editors Note: Thank you Ronnie for your input and for your leadership as President these last three years. We wish you well.)

Who will send our next story?

I hope it will be YOU!

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Atlantic Hurricane Season Begins

The Atlantic Hurricane Season officially begins June 1. NOAA has released their seasonal prediction, which calls for a “near normal” season with 10 – 16 named storms, 4 – 8 hurricanes and 1 – 4 major hurricanes.

Shortly before his death at age 86, Colorado State University Professor William Gray and his designated successor, Dr. Phillip Klotzbach also predicted a “near average season” with 13 named storms, 5 of which could become hurricanes, 3 possibly being category 3 or higher.

Forecasts by the UK Met Office issued May 12, is calling for a slightly above average season with 14 named storms, which is above the 1980 – 2010 average of 12 storms. This would include 8 hurricanes, not counting Hurricane Alex which formed out of season in January.

In the grand scheme of things it doesn’t really how many storms actually do form, what matters is where they end up arriving. A year with 28 storms that never reach land isn’t overly significant, where a year with only one named storm and it being a repeat of Katrina, Camille or Andrew is.

This year our tropical season forgot to read the calendar, as we already have had two named storms – Hurricane Alex, which was the first January storm since 1938 and Tropical Storm Bonnie, which is currently heading for South Carolina.

With the “official” 2016 North Atlantic Hurricane Season beginning it is a good time to review our preparedness plans.

Hurricane Impact & Hurricane Response

Alabama is impacted by hurricanes in three ways:

1. Direct Impact – Where the core of the storm or the rain / wind field actually strikes or passes through a portion of Alabama. Examples being Hurricane’s Fredrick, Opal, Ivan and Katrina.
2. Indirect Impact – where the core is not over Alabama, but the feeder bands are passing through and causing havoc. Rita’s feeder bands being a good example, which dropped 20
tornadoes over west Alabama in a 4-hour period.
3. Distant Impact – A storm is not even near Alabama, but affecting our weather. Such as with Olivia, a Pacific Hurricane which was off Western Mexico. Her moisture was captured by the jet stream, crossed the Sonora desert, the Arklatex region & dumped monsoon type rains on Alabama & Mississippi, causing flooding.

ALERT typically will activate during scenarios 1 & 2. ALERT’s coverage would concentrate on monitoring D-Star directly and using a liaison station to monitor HF offsite on 3.965 MHz or the backup 40-meter frequency of 7.243 MHz.

Then as the storm moves northward into the BMX County Warning Area the focus would then shift to the individual county Skywarn Nets, as we would do during a “normal” callout.

HF Gulf Coast Nets to monitor are:

Primary State ARES Frequencies & Nets for Gulf of Mexico & regular meeting times.

3.965 MHz Alabama Emergency Net Mike 4:00 PM Sunday*
3.940 MHz Florida Amateur Single Sideband Net 6:00 PM
3.975 MHz Georgia Single Sideband Net 7:30 PM
3.910 MHz Louisiana Traffic Net 6:30 PM
3.862 MHz Mississippi Section Phone Net 6:00 PM
3.873 MHz Texas Traffic Net 6:30 PM

* Note that this is also the frequency of the Alabama Traffic Net Mike, meeting daily at 6:30PM Central & Sunday’s at 8:00 AM Central and the Alabama Day Net, which meets daily at 10:00 AM Central Time.

Wide Coverage Nets

14.235 MHz Hurricane Watch Net As Needed
3.935 MHz Central Gulf Coast Hurricane Net 1:00 UTC

The Hurricane Watch Net is only activated when a storm is within 300 miles of a populated land mass. Normally you shouldn’t check into this net, but you only listen. Only check in if you have a legitimate need to do so. A legitimate need being emergency or priority traffic or if the NCS specifically calls for a station in Central Alabama, only then should you pick the microphone up. Occasionally, if there is a lull in activity, they may actually give a call for general check-ins. But, don’t be surprised if they don’t. Helping stations in the affected area is their primary concern.

Once upon a time a, which if I remember correctly was in 1988 when Gilbert, was rearranging Jamaica, the NCS asked “do we have any stations in the affected area, the affected area only?” Some fellow from Zero-land, piped in and very slowly drawled out “This is Kay Zero Que Arr Emmm, Homer over in Tulsa Oklahoma, just wanting to tell you fellers what a fine job, a fine job you fellers are doing. And, if I can be of any help, any help at all just let me know. This is Homer, K0QRM, over in Tulsa Oklahoma on frequency and standing by on the side.”

Fifteen distress calls probably could have been received and handled in the time it took Homer to ooze over “on the side”.

Learn from a bad example. Don’t do this.

Some Internet resources you should have in your toolbox include:

http://www.nhc.noaa.gov/ – The National Hurricane Center out of Coral Gables, FL

http://www.hwn.org/tools/streaming-audio.html – Hurricane Watch Net Streaming Audio.
Note that the audio feed is only active when the net is active.

http://derecho.math.uwm.edu/models/ & http://www.ral.ucar.edu/hurricanes/realtime/current/ – Hurricane Forecast Models

http://www.nrlmry.navy.mil/TC.html – Satellite imagery and data – worldwide

http://www.ssd.noaa.gov/PS/TROP/trop-atl.html – Storm centered satellite imagery

Many other resources, including coastal radar picket, Caribbean & Mexican radar,
charts and satellite imagery can be found on my website www.freewebs.com/weatherlynx/ and
clicking on “Tropics, Charts & Satellites”.

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Hurricane Tracking Gleams And Glints From Mark’s Crystal Ball

I’ve always enjoyed trying to second-guess the National Hurricane Center. It’s fun! Many times our forecasts agree, they have outguessed me an honorable number of times & every now and then, when Divine Providence intervenes, I have beaten them.

The following are some random hints and items I have stored in my dusty brain, which every now and then come into play as I gaze into my tropical crystal ball:

The maximum number of tropical systems that the Atlantic Basin (which includes the Gulf and Caribbean) can simultaneously contain and support is four storms.

If major tropical systems get too close to one another they don’t merge as thunderstorms often do. The upper level winds associated with each storm counteract or buffets each other preventing this from occurring.

If you have a large storm and a smaller storm enters the influence or wind field of the larger storm, the smaller storm will tend to rotate counterclockwise around the primary storm in a process called the Fujiwhara Effect.

If the smaller storm is very weak, say a tropical storm versus a Category 4 storm, it is possible that the smaller storms circulation can be totally disrupted by the larger storm and then it can be absorbed into the larger storms circulation. See http://www.youtube.com/watch?v=fNjUSsqJgek&feature=relmfu as Typhoon Ma-On gobbles up Tropical Storm Tokage in 2011.

Tropical systems, for all of their tremendous energy, are totally without an engine or steering mechanism, but are at the mercy of the whims of the upper level winds. A tropical system can spin all it wants to, but unless the storms thunderstorm columns reach high enough to snag the upper level winds, and then act as a sail, the storm is going nowhere fast. If the upper level winds die down, the storm can drift aimlessly for days.

If the storm sits still long enough, it will begin to dissipate due to it stirring up the deeper cooler waters beneath it and it cooling the sea surface temperature below the 80 degree critical threshold needed to sustain a tropical storm. This is “upwelling”. The one exception to this rule is if it is sitting over the Gulf Stream, as the incoming current will continually replenish the warm water beneath the storm.

A well-formed storm will have a perfectly circular Central Dense Overcast or CDO, an area of thunderstorms surrounding the eye wall, with “feeder bands” of thunderstorms spiraling inward counterclockwise, parallel to the storm’s inbound horizontal winds, and “feeding” energy from the warm tropical ocean into the storm.

The winds being drawn into the eye, once arriving, can only go in one direction – up – and in a well formed storm the system will be capped by high pressure, which helps evacuate these winds as they reach the stratosphere. This forms a false cirrus shield of clouds rotating in a clockwise fashion, as the winds are vented outward.
If the storm has a tear drop shape or a long plume of clouds extending from the storm, this indicates heavy shearing, which will limit its growth, or shred the circulation. The storm will be veered by the shearing and try to deflect towards the direction of the plume.

A poorly organized storm can have a completely exposed center, with the cloud shield nowhere near the center. Until it starts “stacking up” it will remain a weak storm.

Intense, Category 3 or greater hurricanes will go through a process called an “eyewall replacement cycle”. In this case the eyewall contracts so small that some of the outer rain bands may strengthen and form an outer eyewall, causing the storm to weaken by robbing energy from the inner eyewall and will eventually choke it out completely and replace it, causing the storm to re-intensify.

This is a common occurrence. Less common is when you have a triple eyewall, as was the case with Typhoon June and Hurricane Juliette.

The fastest intensification from a Tropical Storm to a Category 5 Hurricane occurred with Hurricane Wilma in 2006, which in 16 hours went from 70 mph to 155 mph and then vacationed in the Yucatan.

The fastest intensification from a Tropical Depression to a Category 5 Hurricane occurred with Hurricane Felix, which took just 51 hours to bloom and then blessed Nicaragua with its presence in 2007.

Tropical systems cannot penetrate frontal boundaries. If a tropical system is threatening the coast, and you see that a front will be approaching the coast from the West, don’t worry about the coast, as it will either stall the storm, deflect it to the Northeast or as in the case of 2009’s Tropical Storm Danny, it can absorb a weak storm.

When looking at hurricane forecast model ensembles, such as http://derecho.math.uwm.edu/models/ & http://www.ral.ucar.edu/hurricanes/realtime/current/, you can judge the “confidence” of the models by the grouping of the plotted tracks. If the plots are tightly grouped together, you can have “high confidence” in the reliability of the track and if the timing given by the plots agree, that also. The narrower the spread, the greater the confidence, and the wider the spread, the lesser the confidence. Some tracks will be obviously wrong, those you can dismiss. If the forecast tracks go look like they were written by a drunken spider, with paths going in every direction at once, that storm is heading nowhere fast.

Theoretically Tropical Storms will lose strength over land. The 1997 version of Danny (which came up I-65 reached Birmingham and then turned East heading along I-20 towards Atlanta, as if He knew what he was doing) forgot this and strengthened while over the swamps of South Carolina and then moved into the Atlantic as a rejuvenated system heading for New England. The theory at that time was that the swamps were so warm and humid that the storm “thought” it was over the sea. Now they say it was due to the effects a frontal system closely following the storm. I always preferred the first explanation, as it seemed more logical, if not niftier.

Storms named “Danny” and I are old companions, incidentally. In 1985 I accidentally managed to intercept Hurricane Danny a few hours after it struck Louisiana. I remember the feeder bands passing with heavy rain and gusts, and then it calming and clearing in between waves. “Looks like it can’t decide whether it’s coming or going” said the old guy at a truck stop where I was refueling. I also remember making a ham sandwich for an old dog at a rest stop. Old Shep looked hungry, so I fixed him one. He woofed it down, thanked me kindly and then disappeared into the mist.

If a storm strikes just West of Alabama, expect sorry weather. If it strikes just East of Alabama, expect dry weather and lowering humidity, as the storm drags the moisture away with it.

If a 120 MPH storm is moving North at 20 MPH the wind field around the eye will be effected as follows. The winds on the Eastern side combine and are in effect 140 MPH, while the winds to the West subtract and are in effect 100 MPH. This is the “fast moving hurricane rule”.

If the Eastern Pacific Basin is active, the Atlantic Basin will be quiet & if the Atlantic Basin is active the Eastern Pacific Basin will be quiet.

Category 5 storms have never occurred in both the Atlantic & Pacific Basins in the same year.

Hurricanes can cross Central America from either the Atlantic or Pacific Basins, enter the other Basin and restrengthen and be renamed. The last being in 1996 when Category 1 Hurricane Cesar which scraped Northern South America, crossed Central America & restrenghtened into Category 4 Hurricane Douglas.

Then there is the case of 1961’s Hurricane Hattie, which formed in the Caribbean, stuck Central America on Halloween, dissipated, then after reaching the Pacific, her remnants helped generate Tropical Storm Simone on November 1. Simone then turned Northwest striking Southern Mexico on November 2, dissipated and her remnants crossed Mexico, entering the Gulf of Mexico. These remnants in turn helped generate Tropical Storm Inga, which dissipated on November 8.

Alphabetical name position can’t be used as an indicator of possible storm strength. Andrew and Opal, both unruly guests, with names toward the opposite ends of the alphabet, are good examples.

Never underestimate the potential impacts of late season storms. Category 5 Hurricane Mitch was active from October 22 – November 5, 1998, with maximum sustained winds of 180 MPH. This storm struck Central America, Yucatán Peninsula & South Florida causing 6.2 billion dollars in damage and caused 11,000 deaths.

Remember that winds do not blow OUT of a hurricane; they are drawn INTO the storm in a spiraling motion. By factoring in the Coriolis Effect of the Earth’s rotation and the counter-effects of surface friction you can determine the general direction of any tropical storm or non-tropical low pressure center using the surface wind direction as follows:

Wind Direction Storm Center Location

South North West
Southeast West
East Southwest
Northeast South
North Southeast
Northwest East
West Northeast
Southwest North

Calm winds suddenly occurring during a hurricane indicates the eye is over you. The winds will return just as suddenly, often stronger in the opposite direction.

My sister’s family was living at Clark Air Force Base in the Philippines in 1974, when Typhoon Bidang passed directly over. When the winds suddenly died down they knew they were in the eye. Suddenly there was a knock on the door and opening it she found a delivery van with the furniture she had ordered. The Filipinos crew unloaded everything, said “thank you” and drove off into the darkness as the rear of the eyewall appeared and began blowing at full force.

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NHC Hurricane Tracking Chart PDF’s

Here are handy hurricane tracking charts from the National Hurricane Center.

http://www.nhc.noaa.gov/pdf/tracking_chart_atlantic.pdf For the Atlantic
http://www.nhc.noaa.gov/pdf/tracking_chart_epacific.pdf For the Eastern Pacific

Someone once asked me “why do you bother tracking the pacific ones?” For practice, so that when the Atlantic ones do appear you are already ahead of the game experience wise.”

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2016 Tropical Cyclone Names

The 2015 North Atlantic Basin Tropical Cyclone names are Alex, Bonnie, Colin, Danielle, Earl, Fiona, Gaston, Hermine, Ian, Julia, Karl, Lisa, Matthew, Nicole, Otto, Paula, Richard, Shary, Tobias, Virginie & Walter.

Note that the names are used on a six-year rotation & that this list will return in 2021. Only names of catastrophic or damaging storms are retired. This is why you will never have another Andrew, Betsy, Camille, Fredrick, Gilbert, Ivan, Katrina or Opal, to name a few ne’er-do-well storms.

If so many storms occur that the list is depleted, as occurred in 2005, the storm names revert to the Greek alphabet. In 2005 five Greek Alphabet storms occurred the last being Tropical Storm Zeta, which formed on December 29, 2005.

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Mark’s Almanac

Originally the fourth Roman Month, June at one time had 29 days, until Julius Caesar in a glow of inspiration added the 30th day.

What June was named for is uncertain. Some say it was named for Juno, wife & sister of Jupiter. Juno was the goddess of marriage and a married couple’s household, so some consider it good luck to be married in this month, which is why June has become a month for so many marriages.

The beginning of meteorological Summer is June 1.

Storm activity retains many of the characteristics of spring, but more and more the pattern takes on the summer pattern of pop-up thunderstorms.

Hurricane season begins, however June hurricanes are usually small and of minor intensity, occurring roughly once every two years.

The centers for June Tropical Cyclone activity are the extreme Western Caribbean, with the storm tracks striking the Yucatan or veering toward Western Florida & the Southwestern Gulf of Mexico, with other storm tracks aiming toward the Mexican mainland.

The center of maximum tornadic activity shifts northward over Kansas and Iowa. Activity in Texas and Oklahoma dies down. There is a 5% decrease in tornadic activity over the May average & by June 4th 50% of the years tornadoes have occurred.

Looking skyward, at the first of the month Mercury is low in the Eastern horizon at sunrise and will reach His highest elevation, 24.2 degrees from the Sunday June 5.

Venus is hidden in the glare of the Sun.

Mars is shining at magnitude -2.0 at the head of Scorpius in the Southeast, nearly as bright as Jupiter, high in the Southwest.

At the first of the month Mars will be the largest and brightest until July 2018, forming a triangle with
the red star Antares to the lower left of Mars and Saturn to the left of Antares.

If you have a telescope, take a closer look. The rings of Saturn are easily seen, as is the ruddy disk of Mars. The Red Planet is just finishing winter in its southern hemisphere, so look for the bright polar cap of the Martian South Pole.

Jupiter in Southern Leo border is high in the South at twilight, shining at magnitude -2.2. The telescope you used to peek at Mars and the rings of Saturn will reveal the cloud bands of Jupiter and the nightly dance of His four largest moons, Europa Callisto, Ganymede and Io, the most volcanically active world in our solar system.

Saturn, shining at magnitude +0.1 just above the head of Scorpius, as mentioned forms a triangle with Mars and Antares. He will make his closest approach to Earth on June 2nd. His rings are tilted 26.1degrees from edgewise, making for a beautiful display in telescopes. While viewing the rings you may notice an object nearby. This is largest moon, Titan, which having an atmosphere twice as thick as Earth’s and stable hydrocarbon seas, lakes and rivers filled with liquid ethane, methane and dissolved nitrogen, also holds the distinction of being the only other moon, besides the Earth’s Moon, having had a spacecraft land on its surface. The European Space Agency’s Huygens probe landed on Titan on January 14, 2005 near the Xanadu Region, a highly reflective area on Titan’s leading hemisphere

Uranus is veiled by the glow of dawn.

Neptune, magnitude +7.9 in Aquarius, is low in the East-Southeast before the first light of dawn.

New Moon will occur June 4 at 9:59 PM CDT. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.

June’s Full Moon is “Strawberry Moon” in Native American folklore. This will occur on June 20 at 6:02 AM CDT. It is called “Strawberry Moon” for it signals the time to start harvesting strawberries, as it is peak strawberry ripening time. Other names are “Rose Moon” & “Honey Moon”.

Summer Solstice will occur at 5:34 PM CDT on June 20. The North Pole of the earth will be tilted toward the Sun, which will have reached its northernmost position in the sky and will be directly over the Tropic of Cancer at 23.44 degrees north latitude. This is the first day of summer in the Northern Hemisphere and the first day of winter in the Southern Hemisphere.

Mark June 25 on your calendar and think about Christmas. Why? Because this is how Christmas, which is six months away, feels like in Australia and Brazil on December 25.

The June Bootids Meteor Shower will occur from June 26th until July 2nd. It peaks on June 27th. Normally the shower is very weak, with a Zenith Hourly Rate or ZHR of 1 or 2, but occasional outbursts produce a hundred or more meteors per hour. The source of the June Bootids is Comet 7P/Pons-Winnecke, which orbits the Sun once every 6.37 years.

3268 planets beyond our solar system have now been confirmed as of May 19, per NASA’s
Exoplanet Archive http://exoplanetarchive.ipac.caltech.edu/

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This month’s meeting will be on June 14 at 7PM at the National Weather Service Forecast office at the Shelby County Airport.

If for some reason you cannot attend the meeting in person, you can still participate via telephone. The teleconference number is 1-877-951-0997 & and the participant code is 741083.
Hope to see you there!
Mark / WD4NYL
Editor
ALERT Newsletter

www.freewebs.com/weatherlynx/

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