Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 138, NWS Jacksonville, FL

June 1, 2008Alachua County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 1, 2008, 4:25 PM EDT for Alachua County, Florida. It was in force for 35 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: Jun 1, 2008, 4:25 PM EDT (20:25 UTC)
Expired: Jun 1, 2008, 5:00 PM EDT
In force: 35 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

County Alachua County, FL

The radar

The Jacksonville radar (KJAX), 110 km from the middle of the area, began a volume at 20:24 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

Tampa Bay, FL (KTBW), launched 12:00Z, 8.4 hours before the alert went out and 219 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: 1476 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 852 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 26 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 Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 3:30 PM EDT, 55 minutes earlier.

Area forecast discussion, Jun 1, 3:30 PM EDT, 55 minutes before

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Hazardous weather outlook, Jun 1, 5:16 AM EDT, 11 hours 9 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
516 AM EDT SUN JUN 1 2008

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-020930-
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COFFEE-
JEFF DAVIS-BACON-APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-
INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-
COASTAL CAMDEN-
516 AM EDT SUN JUN 1 2008

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

.DAY ONE...TODAY AND TONIGHT...

A WEAK AREA OF LOW PRESSURE WILL TRACK THROUGH THE DEEP SOUTH
TODAY AND COMBINE WITH AN UPPER LEVEL DISTURBANCE TO PRODUCE A
BROKEN LINE OF SHOWERS AND THUNDERSTORMS NORTH OF THE AREA.
THROUGH THE EVENING HOURS...THIS ACTIVITY WILL SINK SOUTHWARD TO
AFFECT THE GEORGIA PORTION OF THE FORECAST AREA WITH SCATTERED
SHOWERS AND THUNDERSTORMS.

MEANWHILE...A SEPARATE AREA OF SCATTERED ACTIVITY IS EXPECTED TO
FORM ALONG THE EAST AND WEST COAST SEABREEZE COLLISION. THIS IS
EXPECTED TO OCCUR ALONG THE INTERSTATE 95 CORRIDOR OF NORTHEAST
FLORIDA LATE THIS AFTERNOON. BOTH AREAS OF DISTURBED WEATHER WILL
HAVE THE POTENTIAL FOR ISOLATED STRONG WIND GUSTS...SMALL HAIL AND
FREQUENT CLOUD TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

SCATTERED SHOWERS AND THUNDERSTORMS WILL AFFECT THE AREA MONDAY AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.

DEESE

In the hours before

Special weather statement, Jun 1, 3:04 PM EDT, 1 hour 21 minutes before

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Special weather statement, Jun 1, 3:37 PM EDT, 48 minutes before

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Special weather statement, Jun 1, 3:49 PM EDT, 36 minutes before

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Special weather statement, Jun 1, 3:55 PM EDT, 30 minutes before

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Special weather statement, Jun 1, 3:59 PM EDT, 26 minutes before

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Special weather statement, Jun 1, 4:02 PM EDT, 23 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 9:45 PM EDT	Areal Flood Advisory	JAX	Alachua, Marion	90 min
May 31, 9:48 PM EDT	Severe Thunderstorm Warning	JAX	Marion	28 min
Jun 1, 2:18 PM EDT	Severe Thunderstorm Warning	JAX	Marion	42 min
Jun 1, 2:31 PM EDT	Areal Flood Advisory	JAX	Marion	119 min
Jun 1, 3:53 PM EDT	Special Marine Warning	JAX		67 min
Jun 1, 4:38 PM EDT	Areal Flood Advisory	JAX	Alachua	2 hr
Jun 1, 5:09 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Saint Johns	36 min
Jun 1, 5:27 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Saint Johns	33 min
Jun 1, 5:45 PM EDT	Areal Flood Advisory	JAX	Duval, Saint Johns	90 min
Jun 1, 6:06 PM EDT	Areal Flood Advisory	JAX	Clay, Duval, Saint Johns	84 min
Jun 1, 6:11 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Duval	34 min
Jun 1, 6:45 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	45 min
Jun 1, 6:48 PM EDT	Severe Thunderstorm Warning	JAX	Bradford, Clay	27 min
Jun 1, 7:03 PM EDT	Areal Flood Advisory	JAX	Duval, Nassau	87 min

Nearby

Severe Thunderstorm Warnings in Florida, 2008 Every severe thunderstorm warning in 2008

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.