Alert archive / Florida / Special Weather Statements in 2020

Special Weather Statement, NWS Tallahassee, FL

August 18, 2020Leon County, Florida

NWS Tallahassee, FL issued this special weather statement at Aug 18, 2020, 3:13 PM EDT for Leon County, Florida. It was in force for 32 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: Aug 18, 2020, 3:13 PM EDT (19:13 UTC)
Expired: Aug 18, 2020, 3:45 PM EDT
In force: 32 min
Issued by: NWS Tallahassee, FL

County Leon County, FL

The radar

The Tallahassee radar (KTLH), 3 km from the middle of the area, began a volume at 19:16 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, 7.2 hours before the alert went out and 4 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: 728 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 1417 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: -5 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 Aug 18, 3:10 PM EDT, 3 minutes earlier.

Area forecast discussion, Aug 18, 3:10 PM EDT, 3 minutes before

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In the hours before

Special weather statement, Aug 18, 2:15 PM EDT, 58 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
215 PM EDT Tue Aug 18 2020

FLZ017-181900-
Leon FL-
215 PM EDT Tue Aug 18 2020

...SIGNIFICANT WEATHER ADVISORY FOR LEON COUNTY UNTIL 300 PM EDT...

At 215 PM EDT, Doppler radar was tracking a strong thunderstorm over
Tallahassee. This storm was nearly stationary.

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

Locations impacted include...
Tallahassee, Woodville, Florida State University, Florida A And M,
Tallahassee Comm College, Doak Campbell Stadium, Lake Bradford,
Gaither Community Center, Tallahassee Memorial Hosp, Iamonia,
Tallahassee Mall, Governors Square Mall, Natural Bridge, Belair, Levy
Park, Indian Head Acres, Chaires Crossroads, Baum, Orchard Pond and
Maclay State Gardens.

LAT...LON 3027 8424 3030 8425 3030 8428 3048 8440
      3051 8440 3052 8439 3058 8437 3060 8433
      3064 8430 3067 8431 3068 8430 3068 8416
      3052 8403 3052 8404 3046 8404 3044 8407
      3027 8408
TIME...MOT...LOC 1815Z 319DEG 4KT 3050 8424

42-DVD

Special weather statement, Aug 18, 2:19 PM EDT, 54 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
219 PM EDT Tue Aug 18 2020

FLZ008-010-012-108-112-181900-
Coastal Bay FL-Central Walton FL-Inland Bay FL-South Walton FL-
Washington FL-
219 PM EDT Tue Aug 18 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BAY...SOUTHEASTERN
WALTON AND SOUTHWESTERN WASHINGTON COUNTIES UNTIL 300 PM EDT/200 PM
CDT/...

At 219 PM EDT/119 PM CDT/, Doppler radar was tracking a strong
thunderstorm 17 miles southwest of Vernon. This storm was nearly
stationary.

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

Locations impacted include...
Live Oak, Ebro, Bruce, Red Head, Red Bay, Pine Log and Seminole
Hills.

LAT...LON 3054 8611 3062 8590 3045 8572 3032 8600
      3038 8603 3039 8604 3040 8604 3040 8605
TIME...MOT...LOC 1819Z 319DEG 4KT 3048 8595

42-DVD

Special weather statement, Aug 18, 3:01 PM EDT, 12 minutes before

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Local storm report, Aug 18, 3:05 PM EDT, 8 minutes before

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Local storm report, Aug 18, 3:07 PM EDT, 6 minutes before

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Special weather statement, Aug 18, 3:13 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
Aug 18, 7:53 AM EDT	Special Marine Warning	TAE		67 min
Aug 18, 8:57 AM EDT	Special Marine Warning	TAE		93 min
Aug 18, 11:33 AM EDT	Special Marine Warning	TAE		31 min
Aug 18, 12:35 PM EDT	Rip Current Statement	TAE	Gulf	13 hr
Aug 18, 1:29 PM EDT	Special Weather Statement	TAE	Madison	46 min
Aug 18, 1:46 PM EDT	Special Weather Statement	TAE	Jefferson	29 min
Aug 18, 1:49 PM EDT	Special Weather Statement	TAE	Gulf	41 min
Aug 18, 2:08 PM EDT	Special Weather Statement	TAE	Jefferson	37 min
Aug 18, 2:15 PM EDT	Special Weather Statement	TAE	Leon	45 min
Aug 18, 2:19 PM EDT	Special Weather Statement	TAE	Walton	41 min
Aug 18, 2:29 PM EDT	Severe Thunderstorm Warning	TAE	Jefferson, Leon	46 min
Aug 18, 3:25 PM EDT	Special Weather Statement	TAE	Bay	50 min
Aug 18, 3:40 PM EDT	Special Weather Statement	TAE	Gadsden	50 min
Aug 18, 3:56 PM EDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Gulf, Washington	32 min
Aug 18, 4:15 PM EDT	Special Weather Statement	TAE	Wakulla	30 min
Aug 18, 5:19 PM EDT	Special Weather Statement	TAE	Holmes	26 min
Aug 18, 6:17 PM EDT	Special Weather Statement	TAE	Madison	28 min
Aug 18, 1:55 PM EDT	Special Weather Statement	TAE	Grady	35 min
Aug 18, 3:01 PM EDT	Special Weather Statement	TAE	Turner	44 min
Aug 18, 4:17 PM EDT	Special Weather Statement	TAE	Decatur	28 min
Aug 18, 5:17 PM EDT	Special Weather Statement	TAE	Seminole	28 min
Aug 18, 5:21 PM EDT	Special Weather Statement	TAE	Tift	24 min
Aug 18, 5:45 PM EDT	Special Weather Statement	TAE	Berrien, Colquitt, Cook	45 min
Aug 18, 5:46 PM EDT	Special Weather Statement	TAE	Decatur	44 min
Aug 18, 6:25 PM EDT	Severe Thunderstorm Warning	TAE	Berrien	17 min
Aug 18, 6:30 PM EDT	Special Weather Statement	TAE	Cook	30 min
Aug 18, 7:38 PM EDT	Special Weather Statement	TAE	Lanier	37 min
Aug 18, 4:18 PM EDT	Special Weather Statement	TAE	Houston	27 min
Aug 18, 4:42 PM EDT	Special Weather Statement	TAE	Houston	33 min

Nearby

Special Weather Statements in Florida, 2020 Every special weather statement in 2020

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.