Archive for April, 2008

Much More on the Black Locust

Wednesday, April 30th, 2008

Black Locust In Depth

Black Locust

Our Midday guest on WAAY-31 brought in a branch of the black locust, a plant whose blooming helps to show us when colder weather may visit the South… and so far this year, seems to have done a great job of predicting.

Read the information in the link above.  Great Stuff!!

 Brad Huffines, Chief Meteorologist / Storm Force 31

Quiet, Severe, then Quiet… Vintage Valley Spring

Tuesday, April 29th, 2008

As a very strong area of high pressure slides off to the east Wednesday, the winds will return out of the south, and that will allow 2 days of moisture transport into the atmosphere before the main event of showers and t-storms move threaten the Tennessee Valley Friday afternoon and Saturday morning.

There will be many ingredients in place that will spell a chance for damaging t-storms, including isolated tornadoes.  The surface winds will be out of the south, while the wind flow at 3,000 feet will likely be out of the Southwest.  At about 10,000 feet, the winds will be out of the west, as they will be at nearly 18,000 feet. 

Thunderstorm Description from Britannica.com

If you stack these winds atop one another, you can see that a rising culumn of air will be spun in a clockwise direction, which is also described as a cyclonic spin.  Thunderstorms that have a cyclonic spin are called meso-’cyclones’ and are the storms responsible for producing most tornadoes.  This is why these storms will require watching from Noon Friday until the cold front passes Saturday morning.

NOAA Wx Radio Symbol

Behind that… prepare for a cooler weekend and high temperatures in the upper 60s and lower 70s on Saturday, and the middle 70s on Sunday, which should spell a ‘N-I-C-E’ weekend.

Check out the 7-Day Forecast for details.

Brad Huffines, Chief Meteorologist / Storm Force 31

The Weekend, As Usual, Gets Weather Dicey

Monday, April 28th, 2008

Showers and thunderstorms dotted the Tennessee Valley this weekend, but just in time for the WORK WEEK (!!!!) the great weather has returned.  At least the rains held off most of the weekend for another very successful and enjoyable Panoply.

Across the Pond Shot of Panoply

For the rest of the week, the temperatures will slowly rise after they hit rock bottom once again on Tuesday morning.  With morning low temperatures in the upper 30s in MOST of the Tennessee Valley, the middle 30s are likely in protected valleys and low spots, giving some of us a chance for a light frost.  After that…. 60s, 70s, 80s, and T-storms.  There, that was easy.

Check out the 7-Day Forecast for details.

Brad Huffines, Chief Meteorologist / Storm Force 31

Plan Your Weekend With Portability

Friday, April 25th, 2008

 If we see just shy of an inch of rain, (.96″) before the month ends, we’ll see the first monthly surplus of rain since October of 2006.  If we see 1.98″, we’ll see the first calander month of a 1″ surplus or more since December of 2004.

That being the headline, and the fact that we need all the rains we can get in these Spring showers, the probabilities of weekend showers and thunderstorms is promising for our long-term rainfall needs, but not for our short-term Panoply and other outdoor plans.  Hoping that the timing of the rains will not wash out numerous plans, the showers that visit should be neither dangerously severe nor overly long-term, meaning that most plans can be delayed or brought indoors as opposed to cancelled. 

Saturday Afternoon Rains Ending 

That said, the best chances for rains are Saturday morning through Noon, and then late Sunday Morning and Early afternoon, before more showers come through Sunday late afternoon and evening. 

Sunday Afternoon Showers Approaching 

If Sunday’s storms arrive after we see afternoon heating, there is a small chance that some of the storms could cause damaging winds and hail.

The cold front that will help to cause the thundershowers will cool us down to the 70s on both Saturday and Sunday, then into the low to mid 60s on Monday.  There is another warming trend awaiting us starting Tuesday, but isn’t it always after a dip in temperatures.

Check out the 7-Day Forecast for details.

Brad Huffines, Chief Meteorologist / Storm Force 31

Panoply Planners and Participants Prepare for Precipitation

Thursday, April 24th, 2008

Always Avoid Awkward and Afflicted Alliteration

The chances for showers and thunderstorms continue to increase as the weekend approaches.  A cool front will move across the Tennessee Valley with a surge of Gulf Moisture ahead of the front that will be strained out of the air in the form of scattered showers and some thundershowers.  The time frame of the best chances for showers is from 9am until 3pm, with hopefully a break for the late afternoon and evening hours of Panoply until the rain chances increase again from Sunday afternoon through Sunday evening.  However, with all storm systems of this size, there is a threat for showers and thundershowers during other weekend hours as well.

Mountain Showers Visit the Valley

After the chances for rain taper off early Monday morning, cooler temperatures will sink into the Tennessee Valley leaving high temperatures in the lower to middle 60s.  This will be followed by a low temparature in the lower 40s Tuesday morning, before the quick warm-up of next week.

Check out the 7-Day Forecast for details.

Brad Huffines, Chief Meteorologist / Storm Force 31

How Valid Are T.V. Weather Forecasts?

Wednesday, April 23rd, 2008

This blog post was recently forwarded to me with a challenge to log accuracy in forecasting amongst the local meteorologists in Kansas City.  Actually, that was done locally several years ago….also a science project, this one by a student at Huntsville High School…I was glad to see our forecasts from WAAY scored most accurate, using the parameters set by the project.  (Whew!)  But it’s always good to keep in mind, perception of accuracy is really quite subjective to those parameters established.

 

Brad Huffines and Keller Watts are two of the best synoptic forecasters I’ve known in my 41 years in this business, and I’m proud to be a part of this weather team at 31.  I trust our team will continue to offer the most accurate forecasting possible for the Tennessee Valley region.

 

Read the Freakonomics blog here.

 

Gary Dobbs, Meteorologist / Storm Force 31

Plan for Weather Delays for Weekend Plans

Wednesday, April 23rd, 2008

With panoply taking place this weekend in downtown Huntsville, and thousands of us planning to spend time there, we have a better than even chance for showers and thunderstorms on Saturday and Sunday, but not for the entire weekend.  Most of you should be able to spend time outdoors at times with slow-downs or cancellations for sporadic chances for rains and showers.  Don’t let it keep you indoors, but do check the weather as you have weekend plans.

2008 Panoply Poster (Say THAT 5 times fast!)

On Monday, the coolest air of this series of storm systems begins arriving to remind us that the ramping up of temperatures on the way to Summer is not happening at full speed.  As cooler air settles in, the chances for showers leaves the Tennessee Valley, setting the stage for another chilly morning on Tuesday, before we start another warm up next week.

Check out the 7-Day Forecast for details.

Brad Huffines, Chief Meteorologist / Storm Force 31

Panoply Plans May Include Thundershowers

Tuesday, April 22nd, 2008

As is always the case… a 7-Day forecast in the Tennessee Valley in the Spring is, at best, always negotiable.  You are the customer, Mother Nature is the New Car Sales Manager, and I am the Salesman who represents both parties involved and their interests.

Huffines Auto Dealership Logo... Yes, Really

Did I just call meteorologists car salesmen?  That was probably a bad move.  And depending on the expertise and experience of the forecaster, you could be driving a Suzuki or a Bentley.  Personally, when you depend on my forecasts, you should have Bentley expectations.

Enough of that digression.  With a fairly strong jet stream flow across the nation, and a pretty vigorous upper level storm moving our way late in the weekend, slight changes in wind patterns which blow across our continent at between 90 to 150 miles per hour accelerate air masses, and the cold and warm fronts that separate them, setting them into motion and increasing their momentum.  This makes a forecast of relatively calm weather become a forecast where a couple of fronts which were supposed to stay a hundred miles away yesterday to become a weather maker in the Tennessee Valley in today’s atmospheric modeling and forecasting.

Saturday AM Looks to Start w/ a Threat

Sounds pretty complex huh?  Well, it is.  Trust me.  So when you are looking at your meteorologist’s bio, education, experience and training DO matter.

BOTTOMLINE:  A chance for t-storms for Panoply weekend in Huntsville at Big Spring Park.  No big surprise there, huh?

Official Panoply Logo

Check the 7-Day forecast for details.

Brad Huffines, Chief Meteorologist / Storm Force 31

Don’t Ask a Meteorologist to Control the Weather

Monday, April 21st, 2008

Some Very Nice Weather Heading Into Panoply Weekend

Subsiding Air.  High Pressure.  One in the same.  Think of ‘high pressure’ as an increasing amount of weight being pressed upon the surface of the earth by air sinking on it, much like someone standing over you, shifting their weight to their foot atop your chest.

Easy High Pressure Diagram

In the atmosphere, it means a limit to the number and thickness of clouds, a diminished ability to produce gusty winds, and usually an increase in the amount of haze that builds up underneath the area of high pressure.

When this weather pattern begins to break the chance for isolated t-storms usually enters slowly until the next surface storm system moves across the Tennessee Valley, and in this case, it is a cold front Monday or Tuesday of next week, if it indeed materializes.

Weatherman Who is Bored

That entire write-up is the technical way to say… the weather remains boring… well, pleasant to you, boring for meteorologists.  Remember, we don’t go to school to learn to forecast just sunny skies!

Check the 7-Day forecast for details.

Brad Huffines, Chief Meteorologist / Storm Force 31

Earthquakes in Alabama

Friday, April 18th, 2008

 

Though rare, earthquakes are not totally uncommon for Alabama, but if you have ever seen hen’s teeth… well, you get my point.  The following information is from the United States Geological Survey (USGS).  Enjoy the read!

http://earthquake.usgs.gov/regional/states/alabama/history.php

The known seismic history of Alabama spans about 100 years for local earthquakes. For shocks outside the State borders that caused damaged to cities in Alabama, the history can be traced to 1811 – 1812, when three great (estimated magnitude 8 or greater on the Richter scale) earthquakes centered in Missouri may have reached intensity VII in the northern and/or central sections. These gigantic earthquakes were comparable to the San Francisco shock in 1906 and were felt over 2 million square miles, more than half of the total area of the United States.

Earthquake Explainer

Historical records indicate the first earthquake of consequence in Alabama shook residents of Sumter and Marengo Counties, located in the western part of the State, on February 4, 1886. A similar shock occurred nine days later, on February 13. Both were reported felt at communities along the Tombigee River, but caused no damage. Only six months later, the destructive Charleston, South Carolina, shock that was felt in cities all over the Eastern United States occurred. This shock, located about 400 miles east of Alabama’s border, caused minor damage in the northeastern part of the State.

In 1916 on October 18, a strong earthquake occurred on an unnamed fault east of Birmingham. It was apparently most strong at Easonville. Near the epicenter, chimneys were knocked down, windows broken, and frame buildings “badly shaken.” It was noted by residents in seven States and covered 100,000 square miles.

Another tremor that damaged the Birmingham area occurred on April 23, 1957. Centered near the Tennessee River below Guntersville Dam, the earthquake shook residents in southern Tennessee, western Georgia, and most of northern and central Alabama. Earthquake records for that year state: “Felt by, awakened, and alarmed many. Minor damage to several chimneys; one report of cement steps cracked in two; and several small cracks in walls. Table-top items tumbled to the floor.”

Earthquake Threat Map of U.S.

A shock centered in the Huntsville area on August 12, 1959. Though felt over a small area of southern Tennessee and northern Alabama, it shook bricks from chimneys at Hazel Green; damaged one chimney and a newly constructed concrete block building at Meridianville; shook violently the buildings at New Sharon, knocking canned goods from shelves and sending frightened residents fleeing from their homes; and cracked plaster and knocked groceries from shelves at Huntsville.

Additional earthquakes (intensity V category) listed for this State that were minor and caused no damage centered near Rosemary, western Alabama, in June 1917; in the Scottsboro area northeast of Huntsville in June 1927; at Cullman, northern Alabama, in May 1931; and in the Anniston area in May 1939.

A strong earthquake in southern Illinois in November 1968 caused intensity V effects in several localities in northern Alabama. The shock was the strongest in Illinois since 1895, and was felt over a half-million square miles in 23 States.

[The above history was abridged from Earthquake Information Bulletin, Volume 2, Number 1, January-February 1970.]

1975 Aug 29 04:22 4.4M Intensity VI
Palmerdale, Alabama ( 33.659N 86.5880W )
The earthquake cracked a sheetrock ceiling and shifted lamps on tables at Palmerdale, north of Birmingham. It caused slight damage at Watson, where furniture was displaced slightly. Also felt in southern Tennessee.

1989 Aug 20 00:03 3.9M Intensity VI
Near Littleville, Alabama ( 34.736N 87.6450W )
A Colbert County official reported that, south of Florence between Littleville and Russellville, a basement wall collapsed beneath a house. Only slight damage was reported north of the epicenter at Florence, where windows were cracked and hairline cracks formed in plaster. Also felt in Lauderdale, Lawrence, and Morgan Counties in northwest Alabama and Lawrence County in south-central Tennessee.

1997 Oct 24 08:35 4.9M Intensity VI
Near Brewton, Alabama ( 31.118N 87.3390W )
Felt (VI) at Brewton, Canoe and Lambeth; (V) at Atmore, Flomaton, Frisco City and Huxford; (IV) at Perdido and Robinsonville; (III) at Butler, Demopolis, Goodway, Mobile and Uriah. Felt (V) at Century; (IV) at McDavid, Pensacola and Walnut Hill; (III) at Milton, Florida. Felt (IV) at Leakesville, Mississippi. Also felt at Megargel; Elgin AFB, Florida; Biloxi and Gulfport, Mississippi.

1999 Jan 18 07:00 4.0M
Alabama ( 33.405N 87.2550W )

Remain Weather Aware Friday 6pm to Saturday 6am

Thursday, April 17th, 2008

As rain and t-storms head into the Tennessee Valley late Friday and early Saturday morning, it will mark the first rain to visit the Tennessee Valley since the rains and storms of last Friday, and scattered areas of drizzle on Saturday.  In the midst of a slowly waning drought, if we continue to see infrequent rains and showers, the drought will continue to lingerCheck out the latest Drought Monitor Release from today here.

T-storms COming Late Friday & Early Saturday

With high temperatures climbing near 80 degrees, there is a slight chance for a few isolated afternoon thundershowers to develop ahead of the main line of developing thunderstorms, and if that happens, there will be a few areas of heavy downpours with dangerous lightning and rumbles of thunder.  Behind that, cooler weather will prevail on Saturday with a breezy westerly wind, followed by a near perfect Sunday, before showers and t-storms start to develop next week on a more isolated to widely scattered basis as temperatures climb into the midle 80s, and the first humidity you can feel this season builds into the Southeast.

Check the 7-Day forecast for details.

Brad Huffines , Chief Meteorologist / Storm Force 31

WAAY-31’s Tornado Guidelines

Wednesday, April 16th, 2008

At WAAY-31, we receive emails frequently asking for explanations for our news and weather coverage at times.  This email came from a student at Jacksonville State University pertaining to what industry insiders call ‘wall-to-wall’ tornado coverage during tornado warnings.  Below is my reply to his question, followed by his original email to me.  I hope this helps explain WAAY-31’s commitment to your safety while providing accurate and realistic coverage during the threat for tornadoes and severe weather. 

Also, read THIS BLOG POST from 2007 to learn more about Storm Force 31’s overall philosophy toward severe weather coverage.

Love This Phrase

Aaron,

WAAY-TV’s policy is dependent on the analysis of the meteorologist on duty.

When storms have a small likelihood of producing a tornado, we will do frequent cut-ins into programming until that storm either stops threatening, or becomes more threatening when we suspend all programming to stay on until the threat or danger passes.  We do not allow the NWS to determine our viewer coverage commitment, but allow our meteorological editorial expertise to determine how to inform the public of potential dangers.  We feel it is as dangerous to the public in the long-run to overplay non-verifiable warnings as it is in the short-term to underplay real threats.

I hope this answers your question.

Brad Huffines, Chief Meteorologist / Storm Force 31


Faux Tornado Street Sign 

From: jsu5381m@jsu.edu [mailto:jsu5381m@jsu.edu]
Sent: Wed 4/16/2008 12:53 PM
To: WAAY Weather
Subject: Informal Survey Class Project Severe Weather Coverage

 Mr. Huffines,My name is Aaron Tanner. I am a senior majoring in geography at Jacksonville
State University in Jacksonville, Alabama. I am doing an informal survey for a class project on severe weather coverage in Alabama TV markets.
My question is, when a tornado warning is issued for a county in the WAAY viewing area (I realize the viewing area includes not just the Huntsville DMA but bits of the Birmingham and Nashville DMA), does WAAY suspend regular programming and do wall to wall coverage for the tornado warning, or does WAAY keep doing regular programming with occasional updates on the storm? What is
your station’s policy regarding tornado warnings?
Your answer would be greatly appreciated.Sincerely,
Aaron Tanner

Frost and A Light Freeze Visits Again

Tuesday, April 15th, 2008

We have bottomed out.  Hit rock bottom.  Dredged the bottom.  Bottom dwelt.  And many more bottom sayings that do not include the genre of Hip Hop music.

I Cannot Believe I have Stooped to THIS!

So, when you are on the bottom, you can go nowhere but…?  Exactly.  And that is exactly where we are headed.  Temperatures stayed in the 60s on Tuesday, and Wednesday through the rest of the week will reach into the 70s before they return to the 80s next week.  Rain chances are likely to be relegated to Friday night and early Saturday morning.  Some of the showers and t-storms heading our way late in the week could bring locally heavy rain to isolated areas, but this brief taste of showers will neither last long nor have long-term impact on the drought situation.

Saturday AM Forecast Map

As high temperatures climb into the low- to mid- 80s next week, our rain chances start creeping back upward, but not into the likely category at least into next Tuesday.

Check the 7-Day forecast for details.

Brad Huffines , Chief Meteorologist / Storm Force 31

Near Freezing Temps Could Be MUCH Worse

Monday, April 14th, 2008

 

What a ride!  From 80s, severe t-storms and tornado warnings on Friday, to 50s this afternoon, and temperatures heading toward freezing for the start of Tax Day 2008.  (Remember the Rule of (green) Thumb in North Alabama?  “Never plant anything in the ground before April 15th unless you want to risk a freeze.”  Well, scores of Tennessee Valley gardeners decided the risk is worth it… and will be sweating a cold morning as we all think taxes.

Now the good news.  After that, the weather warms consistently through the end of the week, with a chance for rains and some t-storms before a slight weekend cooldown.

Check the 7-Day Forecast for Details

Brad Huffines, Chief Meteorologist / Storm Force 31

Late Cold Snap Hits The TN Valley

Sunday, April 13th, 2008

The above map suggests that most areas in the Tennessee Valleys should experience the last frost between March 30th and April 10th; of course, that would be if we were talking about a normal year…which we obviously are not.  I believe the climatological researchers who contructed that map will have to make a few adjustment when all of the 2008 last frost data is compiled.

Get ready for a chilly couple of days around the Tennessee Valley as a series of cold fronts brings reinforcing shots of colder air from the north.  Low temperatures on Monday morning will hover a few degrees above freezing and there exists a chance that light flurries will mix with the rain showers.  Skies will remain mostly cloudy on Monday as rain chances continue around 30% through the late afternoon.  Skies will clear out Monday night allowing temperatures to fall quickly and Tuesday morning will be the coldest with readings at or below the freezing mark.  Remember to pay special attention to the tender vegetation as it will be put at risk with the low temperatures.  A rapid warm up is expected on Tuesday afternoon as temperatures will return to the low 60s thanks to the clockwise flow of high pressure off to the east tapping into tropical warm air.  Wednesday through Friday will see a return to normal highs in the low 70s and low in the lower 50 and upper 40s.

Check out the 7-Day Forecast for details

Keller Watts, Meteorologist, Storm Force 31