Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Tallahassee, FL

April 3, 2017Lafayette County, Florida

NWS Tallahassee, FL issued this special weather statement at Apr 3, 2017, 9:46 PM EDT for Lafayette County, Florida. It was in force for 59 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: Apr 3, 2017, 9:46 PM EDT (01:46 UTC)
Expired: Apr 3, 2017, 10:45 PM EDT
In force: 59 min
Issued by: NWS Tallahassee, FL

County Lafayette County, FL

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 1.8 hours before the alert went out and 146 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: 1154 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1449 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -52 m²/s²
0-3 km storm-relative helicity: -14 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

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 Apr 3, 7:43 PM EDT, 2 hours 3 minutes earlier.

Area forecast discussion, Apr 3, 7:43 PM EDT, 2 hours 3 minutes before

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In the hours before

Local storm report, Apr 3, 8:51 PM EDT, 55 minutes before

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Local storm report, Apr 3, 8:52 PM EDT, 54 minutes before

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Special weather statement, Apr 3, 9:00 PM EDT, 46 minutes before

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Local storm report, Apr 3, 9:28 PM EDT, 18 minutes before

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Local storm report, Apr 3, 9:36 PM EDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
936 PM EDT MON APR 03 2017

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

0142 PM     TSTM WND DMG     2 NNW ALBANY            31.60N 84.19W
04/03/2017                   DOUGHERTY          GA   BROADCAST MEDIA

            TREE DOWN ON 12TH AVENUE

0142 PM     TSTM WND DMG     3 NNW ALBANY            31.61N 84.20W
04/03/2017                   DOUGHERTY          GA   BROADCAST MEDIA

            TREE DOWN ON A HOUSE ON DONCASTER DRIVE

&&

DVD

Special weather statement, Apr 3, 9:46 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
946 PM EDT MON APR 3 2017

FLZ019-028-029-034-128-040245-
Inland Taylor FL-Madison FL-Inland Dixie FL-Coastal Taylor FL-
Lafayette FL-
946 PM EDT MON APR 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR LAFAYETTE...NORTHERN DIXIE...
EASTERN TAYLOR AND SOUTHEASTERN MADISON COUNTIES UNTIL 1045 PM EDT...

At 945 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorms along a line extending from 11 miles west of
Dowling Park to 17 miles south of Perry. Movement was east at 45 mph.

Winds near 40 mph will be possible with these storms.

Locations impacted include...
Mayo, Perry, Branford, Lee, Pinland, Tennille, Jug Island, Clara,
Buckville, Dekle Beach, Jack Lee Island, Grady, Hatch Bend, Foley,
Salem, Perry-Foley Airport, San Pedro Junction, Cedar Island, Fish
Creek and Cooks Hammock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2983 8289 2981 8293 2980 8292 2971 8296
      2976 8362 2982 8367 3039 8347 3043 8322
      3041 8319 3035 8319 3035 8321 3031 8321
      3025 8325 3011 8323 3008 8307 2999 8296
      2996 8295 2996 8293 2989 8292 2988 8288
TIME...MOT...LOC 0145Z 277DEG 38KT 3028 8343 2986 8362

42-DVD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 8:15 PM EDT	Special Marine Warning	TAE		2 hr
Apr 3, 8:19 PM EDT	Special Weather Statement	TAE	Madison	26 min
Apr 3, 8:22 PM EDT	Special Weather Statement	TAE	Wakulla	38 min
Apr 3, 9:00 PM EDT	Special Weather Statement	TAE	Taylor	60 min
Apr 3, 10:13 PM EDT	Special Marine Warning	TAE		62 min
Apr 3, 10:42 PM EDT	Special Weather Statement	TAE	Lafayette	63 min
Apr 4, 12:36 AM EDT	Special Weather Statement	TAE	Lafayette	39 min
Apr 4, 12:55 AM EDT	Severe Thunderstorm Warning	TAE	Lafayette	22 min
Apr 4, 3:25 AM EDT	Flash Flood Warning	TAE	Lafayette, Madison, Taylor	4 hr
Apr 4, 4:13 AM EDT	Dense Fog Advisory	TAE	Bay, Calhoun, Gulf, Holmes, Jackson, Walton and 1 more	6 hr
Apr 4, 4:43 AM EDT	Flash Flood Warning	TAE	Lafayette, Taylor	4 hr
Apr 4, 5:13 AM EDT	Special Marine Warning	TAE		92 min
Apr 4, 6:36 AM EDT	Special Marine Warning	TAE		114 min
Apr 4, 8:48 AM EDT	Flash Flood Warning	TAE	Lafayette, Taylor	117 min
Apr 4, 10:42 AM EDT	Rip Current Statement	TAE	Bay, Gulf, Walton	8 hr
Apr 4, 4:18 PM EDT	Special Marine Warning	TAE		117 min
Apr 4, 6:31 PM EDT	Special Marine Warning	TAE		119 min
Apr 4, 6:47 PM EDT	Special Weather Statement	TAE	Gulf	43 min
Apr 4, 7:13 PM EDT	Severe Thunderstorm Warning	TAE	Gulf	32 min
Apr 4, 7:27 PM EDT	Special Marine Warning	TAE		33 min
Apr 4, 7:30 PM EDT	Special Marine Warning	TAE		30 min
Apr 4, 7:38 PM EDT	Severe Thunderstorm Warning	TAE	Calhoun, Franklin, Gulf, Liberty	37 min
Apr 4, 7:55 PM EDT	Special Marine Warning	TAE		65 min
Apr 4, 7:58 PM EDT	Special Marine Warning	TAE		32 min

Nearby

Special Weather Statements in Florida, 2017 Every special weather statement in 2017

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.