Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tallahassee, FL

May 11, 2021Jefferson County, Florida

NWS Tallahassee, FL issued this special weather statement at May 11, 2021, 8:54 PM EDT for Jefferson County, Florida. It was in force for 36 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: May 11, 2021, 8:54 PM EDT (00:54 UTC)
Expired: May 11, 2021, 9:30 PM EDT
In force: 36 min
Issued by: NWS Tallahassee, FL

County Jefferson County, FL

The radar

The Tallahassee radar (KTLH), 60 km from the middle of the area, began a volume at 00:55 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 00:00Z, 0.9 hours before the alert went out and 57 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1708 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 73 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 May 11, 8:35 PM EDT, 19 minutes earlier.

Area forecast discussion, May 11, 8:35 PM EDT, 19 minutes before

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In the hours before

Special weather statement, May 11, 6:55 PM EDT, 1 hour 59 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
655 PM EDT Tue May 11 2021

FLZ011-016-026-GAZ155-156-112345-
Liberty FL-Gadsden FL-Jackson FL-Decatur GA-Seminole GA-
655 PM EDT Tue May 11 2021

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN JACKSON...WESTERN
GADSDEN...NORTHEASTERN LIBERTY...WESTERN DECATUR AND CENTRAL SEMINOLE
COUNTIES UNTIL 745 PM EDT/645 PM CDT/...

At 655 PM EDT/555 PM CDT/, Doppler radar was tracking strong
thunderstorms along a line extending from 11 miles northwest of
Chattahoochee to near Blountstown. Movement was northeast at 25 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Bainbridge, Greensboro, Chattahoochee, Sneads, Gretna, Bristol, Grand
Ridge, Brinson, Hanover, Rock Bluff, Ausmac, Reynoldsville, Juniper,
Douglas City, Hosford, Rosedale, Recovery, Decatur Co A/P, Clio and
Jinks.

LAT...LON 3102 8459 3039 8465 3033 8472 3032 8470
      3030 8471 3030 8502 3043 8501 3044 8498
      3045 8500 3047 8499 3047 8500 3052 8499
      3058 8496 3058 8494 3061 8493 3061 8500
      3092 8501
TIME...MOT...LOC 2255Z 223DEG 23KT 3085 8494 3043 8497

42-DVD

Local storm report, May 11, 7:40 PM EDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
740 PM EDT TUE MAY 11 2021

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

0626 PM     TSTM WND DMG     1 ENE CHASON            30.54N 85.18W
05/11/2021                   CALHOUN            FL   LAW ENFORCEMENT

            POWER LINE REPORTED DOWN NEAR 11548 NW
            COUNTY ROAD 274.

&&

DVD

Special weather statement, May 11, 7:43 PM EDT, 1 hour 11 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
743 PM EDT Tue May 11 2021

GAZ156-157-120015-
Decatur GA-Grady GA-
743 PM EDT Tue May 11 2021

...SIGNIFICANT WEATHER ADVISORY FOR DECATUR AND GRADY COUNTIES UNTIL
815 PM EDT...

At 743 PM EDT, Doppler radar was tracking a strong thunderstorm near
Bainbridge, moving east at 20 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Bainbridge, Cairo, Whigham, West Bainbridge, Attapulgus, Climax,
Vada, Ausmac, Capel, Elpino, Eldorendo, Rocky Hill, Decatur Co A/P,
Steinham Store, Harrells Still, Laingkat, Calvary, Reno, Fowlstown
and Princes Still.

LAT...LON 3108 8421 3068 8414 3070 8457 3107 8468
      3107 8465 3108 8464
TIME...MOT...LOC 2343Z 251DEG 19KT 3089 8450

42-DVD

Local storm report, May 11, 7:59 PM EDT, 55 minutes before

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Local storm report, May 11, 8:34 PM EDT, 20 minutes before

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Special weather statement, May 11, 8:54 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 9:30 PM EDT	Special Weather Statement	TAE	Jefferson, Madison	60 min
May 11, 10:58 PM EDT	Special Weather Statement	TAE	Lafayette	62 min
May 12, 7:30 AM EDT	Special Weather Statement	TAE	Walton	60 min
May 12, 7:52 AM EDT	Severe Thunderstorm Warning	TAE	Walton	38 min
May 12, 7:58 AM EDT	Severe Thunderstorm Warning	TAE	Walton	47 min
May 12, 8:00 AM EDT	Special Marine Warning	TAE		60 min
May 12, 8:21 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Holmes, Walton, Washington	54 min
May 12, 8:45 AM EDT	Severe Thunderstorm Warning	TAE	Walton	30 min
May 12, 9:15 AM EDT	Special Weather Statement	TAE	Holmes, Jackson, Washington	45 min
May 12, 9:48 AM EDT	Special Weather Statement	TAE	Calhoun, Jackson	42 min
May 12, 10:10 AM EDT	Special Marine Warning	TAE		65 min
May 12, 10:37 AM EDT	Special Weather Statement	TAE	Washington	38 min
May 12, 11:12 AM EDT	Special Marine Warning	TAE		33 min
May 12, 11:37 AM EDT	Special Weather Statement	TAE	Bay	53 min
May 12, 11:47 AM EDT	Special Marine Warning	TAE		58 min
May 12, 12:06 PM EDT	Special Weather Statement	TAE	Liberty	39 min
May 12, 12:27 PM EDT	Severe Thunderstorm Warning	TAE	Leon, Liberty, Wakulla	48 min
May 12, 1:06 PM EDT	Special Marine Warning	TAE		114 min
May 12, 1:07 PM EDT	Severe Thunderstorm Warning	TAE	Franklin, Liberty, Wakulla	38 min
May 12, 1:18 PM EDT	Special Weather Statement	TAE	Jefferson	42 min
May 12, 1:58 PM EDT	Special Weather Statement	TAE	Jefferson, Madison	47 min
May 12, 2:32 PM EDT	Special Weather Statement	TAE	Madison	28 min
May 12, 9:43 AM EDT	Special Weather Statement	TAE	Calhoun, Clay, Early, Miller, Randolph	47 min
May 12, 10:29 AM EDT	Special Weather Statement	TAE	Baker, Decatur, Dougherty, Grady, Miller, Mitchell and 1 more	61 min
May 12, 11:06 AM EDT	Severe Thunderstorm Warning	TAE	Baker, Brooks, Colquitt, Dougherty, Grady, Mitchell and 2 more	69 min
May 12, 11:47 AM EDT	Severe Thunderstorm Warning	TAE	Berrien, Brooks, Colquitt, Cook, Irwin, Lanier and 2 more	48 min
May 12, 8:23 AM EDT	Special Weather Statement	TAE	Coffee, Dale	52 min
May 12, 9:08 AM EDT	Special Weather Statement	TAE	Dale, Henry	52 min

Nearby

Special Weather Statements in Florida, 2021 Every special weather statement in 2021

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.