Alert archive / Georgia / Special Weather Statements in 2016

Special Weather Statement, NWS Tallahassee, FL

July 21, 2016Colquitt County, Georgia

NWS Tallahassee, FL issued this special weather statement at Jul 21, 2016, 1:43 PM EDT for Colquitt County, Georgia. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 21, 2016, 1:43 PM EDT (17:43 UTC)
Expired
Jul 21, 2016, 2:30 PM EDT
In force
47 min
Issued by
NWS Tallahassee, FL

County Colquitt County, GA

The radar

The Moody AFB radar (KVAX), 95 km from the middle of the area, began a volume at 17:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.7 hours before the alert went out and 111 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2016-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1377 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2016-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1377 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1014 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this special weather statement went out at Jul 21, 6:53 AM EDT, 6 hours 50 minutes earlier.

Area forecast discussion, Jul 21, 6:53 AM EDT, 6 hours 50 minutes before
Area Forecast Discussion
National Weather Service Tallahassee FL
653 AM EDT THU JUL 21 2016

.AVIATION [Through 12Z Friday]...

VFR conditions are expected today outside of any thunderstorms.
Scattered TSRA is expected this afternoon, mainly after 17z across
the southern TAF sites and starting a little later around 21z across
the northern TAF site areas.

&&

.PREV DISCUSSION [347 AM EDT]...

.NEAR TERM [Through Today]...
CWA remains on the eastern side of an upper level ridge to the west
with a trough along the eastern U.S. coast, resulting in northerly
flow aloft across the CWA. Do expect to see a more active day than
yesterday, both in regards to seabreeze thunderstorms and storms
sinking into the CWA from the north. No clearly defined short waves
in the ECMWF or GFS but the NAM is picking up on a later start with
less seabreeze activity and then a complex sliding in from the
northeast. Still think we'll see the seabreeze activity after 18z,
but then late in the afternoon scattered storms could slip down into
the northern portion of the CWA. SPC has included the majority of
the CWA in a slight risk for today - could see a few strong and
severe storms with the main threat being damaging wind.

Another hot day is in store across the tri-state area with mid to
upper 90s forecast for highs today. While this results in heat
indices in the 104-107 degree range, which is below heat advisory
criteria, it's still a good idea to follow heat safety rules such as
limiting time outside and staying hydrated.

.SHORT TERM [Tonight Through Saturday]...
Ridging over the Central CONUS remains in place through Friday
before the pattern begins to break down. In this flow regime, late
day convection tends to filter in from the Carolinas and this is
depicted well in the 21/00z NAM which shows convection from
Thursday continuing across the area until at least 06z Fri.
The NAM is quite aggressive, however, with little support for
such widespread coverage in the other models, so will keep PoPs in
the low chance range for tonight.

On Friday, with the ridge still off to the west, expect a late
start to convection and generally scattered coverage at best.
Expect it to continue to be quite warm, with highs in the mid to
upper 90s and heat indices topping out in the 104-106 degree range
in the afternoon.

By Saturday, ridging across the Central CONUS will begin to weaken
slightly, which should lead to a little better coverage of
afternoon storms across the region, though still below normal for
what would typically be seen in late July.

.LONG TERM [Saturday Night Through Thursday]...
The first half of the long term period should feature a return to
near normal rain chances through Monday with the absence of the
strong ridge over the Plains. By Tuesday, ridging from the Western
Atlantic spreads westward into NE Florida, which should result in
a decrease in afternoon rain chances and an increase in afternoon
highs back to the upper 90s across inland areas.

.MARINE...
High pressure will continue to dominate the northern Gulf Coast.
As a result, winds will generally remain 10 knots or less and seas
of 2 feet or less.

.FIRE WEATHER...
With RH values above critical thresholds, hazardous fire weather
conditions are not expected over the next several days.

.HYDROLOGY...
Isolated to scattered afternoon and early evening thunderstorms
are expected each day. There are no widespread flooding concerns
at this time. However, isolated heavy rainfall will be possible
with slower moving thunderstorms.

&&

.PRELIMINARY POINT TEMPS/POPS...

Tallahassee   98  75  97  75  96 /  40  30  40  20  30
Panama City   92  78  92  79  91 /  40  20  40  10  20
Dothan        97  74  96  74  97 /  40  30  30  10  30
Albany        97  74  97  74  98 /  50  20  20  10  20
Valdosta      96  73  96  73  97 /  40  20  30  20  20
Cross City    96  73  96  73  96 /  40  30  40  20  30
Apalachicola  93  77  92  77  91 /  30  20  30  10  10

&&

.TAE WATCHES/WARNINGS/ADVISORIES...

FL...None.
GA...None.
AL...None.
GM...None.

&&

NEAR TERM...Fieux
SHORT TERM...Godsey
LONG TERM...Godsey
AVIATION...Fieux
MARINE...Godsey
FIRE WEATHER...Fieux
HYDROLOGY...Godsey

In the hours before

Special weather statement, Jul 21, 1:43 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
143 PM EDT THU JUL 21 2016

GAZ127-146-211830-
WORTH GA-COLQUITT GA-
143 PM EDT THU JUL 21 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN COLQUITT AND SOUTH
CENTRAL WORTH COUNTIES UNTIL 230 PM EDT...

AT 143 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR DOERUN...OR 11 MILES NORTH OF MOULTRIE. THIS
STORM WAS NEARLY STATIONARY.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
DOERUN...MINNESOTA...PRITCHETTS...ANDERSON CITY...NEW ELM...
SIGSBEE...POWELLTOWN...TICKNOR AND MINTON.

LAT...LON 3125 8395 3139 8396 3146 8375 3128 8370
TIME...MOT...LOC 1743Z 251DEG 3KT 3133 8384

11-MOORE

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 20, 8:59 PM EDTSevere Thunderstorm WarningTAEMadison31 min
Jul 21, 10:43 AM EDTSpecial Marine WarningTAE62 min
Jul 21, 2:45 PM EDTSpecial Marine WarningTAE45 min
Jul 21, 3:48 PM EDTSpecial Weather StatementTAETaylor42 min
Jul 21, 3:57 PM EDTSevere Thunderstorm WarningTAEWakulla33 min
Jul 21, 4:15 PM EDTSevere Thunderstorm WarningTAELiberty, Wakulla45 min
Jul 21, 5:07 PM EDTSpecial Weather StatementTAELiberty38 min
Jul 21, 5:19 PM EDTSpecial Weather StatementTAEGadsden41 min
Jul 21, 5:30 PM EDTSpecial Weather StatementTAEHolmes45 min
Jul 21, 5:39 PM EDTSevere Thunderstorm WarningTAEHolmes, Walton17 min
Jul 21, 6:11 PM EDTSpecial Weather StatementTAEWalton49 min
Jul 21, 6:46 PM EDTSpecial Weather StatementTAEJackson44 min
Jul 21, 7:14 PM EDTAreal Flood AdvisoryTAEJackson2 hr
Jul 21, 7:32 PM EDTFlash Flood WarningTAEJackson, Washington3 hr
Jul 21, 7:54 PM EDTSpecial Weather StatementTAEDixie36 min
Jul 20, 8:22 PM EDTSpecial Weather StatementTAELowndes23 min
Jul 20, 8:33 PM EDTSevere Thunderstorm WarningTAELowndes27 min
Jul 20, 8:58 PM EDTSpecial Weather StatementTAELowndes32 min
Jul 21, 1:53 PM EDTSpecial Weather StatementTAEThomas52 min
Jul 21, 1:58 PM EDTSevere Thunderstorm WarningTAEColquitt, Thomas47 min
Jul 21, 2:05 PM EDTSevere Thunderstorm WarningTAEWorth40 min
Jul 21, 2:29 PM EDTSevere Thunderstorm WarningTAEThomas31 min
Jul 21, 3:07 PM EDTSpecial Weather StatementTAETurner23 min
Jul 21, 3:12 PM EDTSevere Thunderstorm WarningTAETurner24 min
Jul 21, 3:23 PM EDTSevere Thunderstorm WarningTAELee17 min
Jul 21, 3:52 PM EDTSevere Thunderstorm WarningTAEBaker, Dougherty, Mitchell53 min
Jul 21, 4:04 PM EDTAreal Flood AdvisoryTAEBaker, Calhoun, Dougherty, Lee, Mitchell, Terrell and 1 more116 min
Jul 21, 4:42 PM EDTSpecial Weather StatementTAEBaker, Calhoun, Early48 min
Jul 21, 5:28 PM EDTAreal Flood AdvisoryTAECalhoun, Clay, Early, Miller, Quitman, Randolph and 1 more2 hr
Jul 21, 5:29 PM EDTSpecial Weather StatementTAEClay, Early46 min
Jul 20, 10:04 PM EDTSpecial Weather StatementTAECoffee41 min
Jul 20, 10:48 PM EDTSpecial Weather StatementTAECoffee42 min
Jul 21, 4:04 PM EDTSpecial Weather StatementTAECoffee41 min
Jul 21, 4:17 PM EDTSevere Thunderstorm WarningTAECoffee27 min
Jul 21, 7:04 PM EDTSpecial Weather StatementTAEHouston26 min
Jul 21, 7:12 PM EDTAreal Flood AdvisoryTAEDale, Henry, Houston2 hr

Nearby

Special Weather Statements in Georgia, 2016Every special weather statement in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.