Alert archive / Georgia / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 171, NWS Tallahassee, FL

May 12, 2023Lanier County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at May 12, 2023, 6:41 PM EDT for Lanier County, Georgia. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 12, 2023, 6:41 PM EDT (22:41 UTC)
Expired
May 12, 2023, 7:10 PM EDT
In force
29 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Lanier County, GA

The radar

The Moody AFB radar (KVAX), 17 km from the middle of the area, began a volume at 22:41 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, 10.7 hours before the alert went out and 138 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 2023-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1401 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 2023-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
1401 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
800 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 12, 3:10 PM EDT, 3 hours 31 minutes earlier.

Area forecast discussion, May 12, 3:10 PM EDT, 3 hours 31 minutes before
Area Forecast Discussion
National Weather Service Tallahassee FL
310 PM EDT Fri May 12 2023

...New NEAR TERM, SHORT TERM, LONG TERM, MARINE, FIRE WEATHER, HYDROLOGY...

.NEAR TERM...
(Through Saturday)
Issued at 305 PM EDT Fri May 12 2023

Thunderstorms are ongoing in the western FL Big Bend
northeastward into SW GA and south in the eastern Big Bend. Aloft,
there is a vort lobe traversing the area. Morning TAE sounding
was favorable for gusty to strong downburst winds and some hail
given favorable mid level lapse rates. High resolution model
guidance depicts increasing coverage of convection into the
evening hours with an overall diminishing trend towards late this
evening. On Saturday, the atmosphere doesn't change much with the
exception of losing some of the vorticity aloft. Expect the
seabreezes to become active in the afternoon hours. Bumped rain
chances up from just inland northward into the Flint river area.
Highs will reach the lower 90s and lows tonight in the 60s.

&&

.SHORT TERM...
(Saturday night through Sunday night)
Issued at 305 PM EDT Fri May 12 2023

At the start of the short term, there may be some lingering
showers and thunderstorms from that developed from the Atlantic
sea breeze that should continue to diminish through the evening.
That will be the theme as high pressure will prevail. This summer
like pattern that brings afternoon thunderstorms is expected to
continue for the next few days with Highs in the low 90s and Lows
in the upper 60s. PoPs chances range from 25% to 40% Sunday
afternoon. Light westerly/northwesterly winds are expected during
the day on Sunday.

&&

.LONG TERM...
(Monday through Thursday)
Issued at 305 PM EDT Fri May 12 2023

An upper level trough to the north will be expanding south and
west, weakening the ridge that has been over us. A weak cold front
is expected to attempt to pass through on Monday into Tuesday.
This is expected to bring temperatures back down into the upper
80s, briefly. Dewpoints are forecast to come down to the low 60s
in our central GA counties by Tuesday. So, ahead of the front we
have rain chances for Monday afternoon with PoPs ranging from
30%-50%, with the highest chances along the I-75 corridor. After
the frontal passage, we still expect to be in a summertime pattern
with afternoon showers and thunderstorms developing along the sea
breeze (PoPs generally around 20%-40% after Monday). The front
could stall or wash-out as it makes its way through the CWA,
depending on which could increase/decrease rain chances in the
coming week. High temperatures will range in the low 90s, except
for Tuesday with temps in the 80s. Overnight lows will be in the
mid to upper 60s.

&&

.AVIATION...
(18Z TAFS)
Issued at 123 PM EDT Fri May 12 2023

Convection is currently developing in the FL Panhandle and SW GA
currently with additional convection expected to develop into SE
AL the FL Big Bend over the next few hours. The east coast
seabreeze will move westward toward the Big Bend and SW GA later
this afternoon. Therefore, have VCTS starting sooner at ECP/TLH
then in a few hours at the other sites. Convection will diminish
late evening and overnight. Another round of convection will
develop just after this TAF period.

&&

.MARINE...
Issued at 305 PM EDT Fri May 12 2023

With high pressure centered northeast of the region, generally
light easterly to southeasterly winds will continue through the
weekend, with seas remaining 3 feet or less. A weak front may
approach the waters from the north early next week with winds
becoming northerly.

&&

.FIRE WEATHER...
Issued at 305 PM EDT Fri May 12 2023

Afternoon and evening thunderstorms will be possible both
Saturday and Sunday. High pressure will dominate from off the
Atlantic coast keeping winds light and from the east to southeast
outside of thunderstorms. Afternoon high temperatures will reach
the lower 90s.

&&

.HYDROLOGY...
Issued at 305 PM EDT Fri May 12 2023

There is a Marginal Risk for Excessive Rainfall today over much
of our CWA. Overall, 1 to 2 inches of rain could accumulate, with
isolated amounts up to 3 inches in the heavier
showers/thunderstorms. Rivers are currently in good shape, so
riverine flooding is not expected. There may be some nuisance
flooding in low-lying areas which receive heavier rainfall today.
Otherwise, there are no long term concerns of flooding but, there
will be a continued chance for showers and thunderstorms during
the afternoon hours over the next several days.

&&

.SPOTTER INFORMATION STATEMENT...

Spotter activation is requested. Spotters should safely report
significant weather conditions and/or damage (while following all
local, state, and CDC guidelines) by calling the office or tweeting
us @NWSTallahassee.

&&

.PRELIMINARY POINT TEMPS/POPS...
Tallahassee   68  90  69  91 /  50  50  10  40
Panama City   69  85  70  87 /  20  30  10  30
Dothan        67  89  69  90 /  50  50  20  40
Albany        67  90  69  91 /  50  40  20  40
Valdosta      66  88  67  90 /  50  50  30  40
Cross City    66  89  66  89 /  40  30  20  30
Apalachicola  71  81  70  83 /  20  20  10  20

&&

.TAE WATCHES/WARNINGS/ADVISORIES...
FL...None.
GA...None.
AL...None.
GM...None.
&&

NEAR TERM...Scholl
SHORT TERM...Montgomery
LONG TERM....Montgomery
AVIATION...Scholl
MARINE...Montgomery
FIRE WEATHER...Scholl
HYDROLOGY...Montgomery

In the hours before

Special weather statement, May 12, 5:41 PM EDT, 1 hour before
Special Weather Statement
National Weather Service Tallahassee FL
541 PM EDT Fri May 12 2023

GAZ127-129-122215-
Tift GA-Worth GA-
541 PM EDT Fri May 12 2023

...A strong thunderstorm will impact portions of western Tift and
east central Worth Counties through 615 PM EDT...

At 541 PM EDT, Doppler radar was tracking a strong thunderstorm near
Ty Ty, or near Tifton. This storm was nearly stationary.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Tifton, Sylvester, Omega, Poulan, Ty Ty, Phillipsburg, Unionville,
Sumner, Tift Airport, Hillsdale, Chula and Sunsweet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3160 8359 3146 8345 3133 8357 3150 8382
      3159 8367 3157 8367 3157 8365 3160 8365
TIME...MOT...LOC 2141Z 121DEG 4KT 3144 8361

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

02-MONTGOMERY
Local storm report, May 12, 5:44 PM EDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
544 PM EDT FRI MAY 12 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0522 PM     TSTM WND GST     1 SW HEADLAND MUNICIPAL 31.35N 85.32W
05/12/2023  M45 MPH          HENRY              AL   MESONET

&&
Special weather statement, May 12, 5:57 PM EDT, 44 minutes before
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Special weather statement, May 12, 6:13 PM EDT, 28 minutes before
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Special weather statement, May 12, 6:19 PM EDT, 22 minutes before
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Special weather statement, May 12, 6:33 PM EDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 8:14 PM EDTSpecial Weather StatementTAELeon46 min
May 12, 1:03 PM EDTSpecial Weather StatementTAELiberty27 min
May 12, 1:10 PM EDTSevere Thunderstorm WarningTAECalhoun, Liberty35 min
May 12, 1:20 PM EDTSpecial Weather StatementTAEBay25 min
May 12, 1:31 PM EDTSpecial Weather StatementTAEGadsden29 min
May 12, 1:45 PM EDTSpecial Weather StatementTAELiberty30 min
May 12, 1:56 PM EDTSevere Thunderstorm WarningTAEGadsden, Liberty34 min
May 12, 2:04 PM EDTSpecial Weather StatementTAECalhoun26 min
May 12, 2:08 PM EDTSpecial Weather StatementTAELiberty37 min
May 12, 2:21 PM EDTSevere Thunderstorm WarningTAELiberty24 min
May 12, 2:26 PM EDTSpecial Weather StatementTAEGadsden34 min
May 12, 2:33 PM EDTAreal Flood AdvisoryTAECalhoun, Gadsden, Jackson, Leon, Liberty, Wakulla117 min
May 12, 2:37 PM EDTSevere Thunderstorm WarningTAEGadsden53 min
May 12, 2:41 PM EDTSpecial Weather StatementTAECalhoun34 min
May 12, 2:43 PM EDTSpecial Weather StatementTAELiberty32 min
May 12, 2:50 PM EDTSevere Thunderstorm WarningTAEJackson, Washington40 min
May 12, 2:56 PM EDTSevere Thunderstorm WarningTAEBay, Calhoun49 min
May 12, 3:08 PM EDTSpecial Weather StatementTAEGadsden37 min
May 12, 3:20 PM EDTSpecial Weather StatementTAETaylor25 min
May 12, 3:28 PM EDTSpecial Weather StatementTAEJackson47 min
May 12, 3:31 PM EDTSpecial Weather StatementTAEBay29 min
May 12, 3:35 PM EDTSevere Thunderstorm WarningTAEJackson25 min
May 12, 3:39 PM EDTSpecial Weather StatementTAEGadsden36 min
May 12, 3:40 PM EDTSpecial Weather StatementTAETaylor50 min
May 12, 3:51 PM EDTAreal Flood AdvisoryTAEBay, Calhoun, Jackson, Washington114 min
May 12, 3:59 PM EDTSpecial Weather StatementTAEBay31 min
May 12, 4:14 PM EDTSevere Thunderstorm WarningTAEBay, Gulf31 min
May 12, 4:19 PM EDTSpecial Weather StatementTAEMadison41 min
May 12, 5:02 PM EDTSpecial Weather StatementTAEMadison43 min
May 12, 5:19 PM EDTAreal Flood AdvisoryTAEJefferson, Madison116 min
May 12, 6:45 PM EDTSpecial Weather StatementTAEHolmes45 min
May 12, 7:33 PM EDTSpecial Weather StatementTAEWalton27 min
May 12, 7:34 PM EDTSevere Thunderstorm WarningTAEDixie, Lafayette12 min
May 11, 8:19 PM EDTSpecial Weather StatementTAEIrwin26 min
May 11, 8:41 PM EDTSpecial Weather StatementTAEIrwin34 min
May 11, 9:07 PM EDTSpecial Weather StatementTAECook23 min
May 11, 9:15 PM EDTSpecial Weather StatementTAEIrwin30 min
May 11, 9:17 PM EDTSevere Thunderstorm WarningTAEBerrien, Colquitt, Cook43 min
May 11, 9:33 PM EDTSpecial Weather StatementTAECrisp27 min
May 11, 9:41 PM EDTSpecial Weather StatementTAETift34 min
May 11, 9:46 PM EDTSevere Thunderstorm WarningTAEBerrien, Tift44 min
May 11, 9:56 PM EDTSpecial Weather StatementTAEColquitt34 min
May 11, 9:58 PM EDTSpecial Weather StatementTAEIrwin32 min
May 11, 10:15 PM EDTSpecial Weather StatementTAETift45 min
May 12, 2:53 PM EDTSpecial Weather StatementTAEThomas37 min
May 12, 3:22 PM EDTSevere Thunderstorm WarningTAEDecatur, Grady23 min
May 12, 3:31 PM EDTSpecial Weather StatementTAEThomas44 min
May 12, 3:43 PM EDTSpecial Weather StatementTAEGrady32 min
May 12, 3:47 PM EDTSpecial Weather StatementTAEMitchell28 min
May 12, 3:55 PM EDTSpecial Weather StatementTAESeminole35 min
May 12, 4:11 PM EDTSpecial Weather StatementTAEGrady, Mitchell, Thomas34 min
May 12, 4:18 PM EDTSpecial Weather StatementTAESeminole27 min
May 12, 4:24 PM EDTSpecial Weather StatementTAEDougherty36 min
May 12, 4:26 PM EDTSpecial Weather StatementTAELee, Terrell34 min
May 12, 4:39 PM EDTSpecial Weather StatementTAEQuitman, Randolph36 min
May 12, 4:48 PM EDTSpecial Weather StatementTAEClay27 min
May 12, 5:10 PM EDTSevere Thunderstorm WarningTAECalhoun, Clay, Early, Miller50 min
May 12, 5:13 PM EDTSpecial Weather StatementTAEQuitman, Randolph32 min
May 12, 5:19 PM EDTSpecial Weather StatementTAETift26 min
May 12, 5:24 PM EDTSevere Thunderstorm WarningTAEBrooks, Lowndes51 min
May 12, 5:28 PM EDTSpecial Weather StatementTAECalhoun47 min
May 12, 5:33 PM EDTSpecial Weather StatementTAEDougherty, Turner, Worth42 min
May 12, 5:40 PM EDTAreal Flood AdvisoryTAECalhoun, Clay, Quitman, Randolph2 hr
May 12, 5:41 PM EDTSpecial Weather StatementTAETift34 min
May 12, 5:45 PM EDTAreal Flood AdvisoryTAECalhoun, Clay, Early2 hr
May 12, 5:52 PM EDTFlash Flood WarningTAEClay, Early2 hr
May 12, 5:57 PM EDTSpecial Weather StatementTAEBaker, Calhoun, Miller, Seminole33 min
May 12, 6:13 PM EDTAreal Flood AdvisoryTAECalhoun, Dougherty, Lee, Randolph, Terrell, Worth3 hr
May 12, 6:13 PM EDTSpecial Weather StatementTAETurner32 min
May 12, 6:33 PM EDTSpecial Weather StatementTAELanier42 min
May 12, 6:42 PM EDTAreal Flood AdvisoryTAETift, Turner, Worth2 hr
May 12, 6:43 PM EDTSpecial Weather StatementTAEBerrien32 min
May 12, 6:54 PM EDTSpecial Weather StatementTAEBaker, Mitchell36 min
May 12, 7:15 PM EDTSpecial Weather StatementTAEBen Hill, Berrien, Irwin30 min
May 12, 7:29 PM EDTAreal Flood AdvisoryTAEBen Hill, Berrien, Irwin3 hr
May 12, 3:02 PM EDTSevere Thunderstorm WarningTAECoffee28 min
May 12, 3:28 PM EDTSevere Thunderstorm WarningTAECoffee, Dale47 min
May 12, 4:03 PM EDTSpecial Weather StatementTAEDale27 min
May 12, 4:10 PM EDTSpecial Weather StatementTAEGeneva35 min
May 12, 4:12 PM EDTSpecial Weather StatementTAEDale33 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2023Every severe thunderstorm warning in 2023

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.