Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Tallahassee, FL

December 20, 2018Dixie County, Lafayette County, Taylor County, Florida

NWS Tallahassee, FL issued this special weather statement at Dec 20, 2018, 6:19 AM EST for Dixie County, Lafayette County, Taylor County, Florida. It was in force for 56 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: Dec 20, 2018, 6:19 AM EST (11:19 UTC)
Expired: Dec 20, 2018, 7:15 AM EST
In force: 56 min
Issued by: NWS Tallahassee, FL

Counties Dixie County, FL, Lafayette County, FL, Taylor County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.3 hours before the alert went out and 109 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1158 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 84 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 Dec 20, 4:50 AM EST, 1 hour 29 minutes earlier.

Area forecast discussion, Dec 20, 4:50 AM EST, 1 hour 29 minutes before

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In the hours before

Special weather statement, Dec 20, 3:37 AM EST, 2 hours 42 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
337 AM EST THU DEC 20 2018

FLZ014-015-026-112-114-115-200930-
Inland Franklin FL-Coastal Bay FL-Liberty FL-Inland Gulf FL-
Coastal Franklin FL-Coastal Gulf FL-
337 AM EST THU DEC 20 2018

...SIGNIFICANT WEATHER ADVISORY FOR GULF...SOUTHEASTERN BAY...
SOUTHWESTERN LIBERTY AND WESTERN FRANKLIN COUNTIES UNTIL 430 AM
EST/330 AM CST/...

At 336 AM EST/236 AM CST/, Doppler radar was tracking strong
thunderstorms along a line extending from Mexico Beach to 30 miles
south of Port St. Joe. Movement was east at 25 mph.

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

Locations impacted include...
Eastpoint, Apalachicola, St George Island, Port St. Joe, Mexico
Beach, Tyndall Air Force Base, Franklin, Wewahitchka, Honeyville,
Allanton, Chipola Cutoff, Eleven Mile, Odena, Cape San Blas, Indian
Pass, Beverly, Overstreet, Milltown, Kern and Davis Beach.

LAT...LON 2952 8509 2960 8524 2959 8537 2973 8548
      2988 8549 2991 8553 3008 8556 3010 8540
      3010 8539 3011 8535 3017 8488 2961 8482
      2953 8497 2952 8507
TIME...MOT...LOC 0836Z 267DEG 24KT 2996 8543 2938 8536

32

Special weather statement, Dec 20, 6:19 AM EST, 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
Dec 20, 3:37 AM EST	Special Weather Statement	TAE	Gulf	53 min
Dec 20, 3:48 AM EST	Special Marine Warning	TAE		117 min
Dec 20, 3:51 AM EST	Coastal Flood Warning	TAE	Dixie, Taylor	35 hr
Dec 20, 3:51 AM EST	Coastal Flood Advisory	TAE	Franklin, Jefferson, Wakulla	35 hr
Dec 20, 3:51 AM EST	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	51 hr
Dec 20, 3:51 AM EST	High Surf Warning	TAE	Bay, Gulf	42 hr
Dec 20, 3:51 AM EST	High Surf Advisory	TAE	Bay, Franklin, Gulf, Walton	51 hr
Dec 20, 4:18 AM EST	Gale Warning	TAE		42 hr
Dec 20, 5:44 AM EST	Special Marine Warning	TAE		2 hr
Dec 20, 7:22 AM EST	Special Weather Statement	TAE	Madison, Taylor	53 min
Dec 20, 7:37 AM EST	Special Marine Warning	TAE		53 min
Dec 20, 12:38 PM EST	Special Marine Warning	TAE		52 min
Dec 20, 1:22 PM EST	Special Marine Warning	TAE		38 min
Dec 20, 2:13 PM EST	Special Marine Warning	TAE		47 min
Dec 20, 2:41 PM EST	Special Marine Warning	TAE		34 min
Dec 20, 2:53 PM EST	Special Marine Warning	TAE		52 min
Dec 20, 3:22 PM EST	Wind Advisory	TAE	Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more	28 hr
Dec 20, 3:38 PM EST	Special Marine Warning	TAE		52 min
Dec 20, 4:14 PM EST	Special Marine Warning	TAE		61 min

Nearby

Special Weather Statements in Florida, 2018 Every special weather statement in 2018

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.