Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 240, NWS Jacksonville, FL

June 25, 2008Alachua County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 25, 2008, 2:10 PM EDT for Alachua 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 counties it named.

The facts

Issued: Jun 25, 2008, 2:10 PM EDT (18:10 UTC)
Expired: Jun 25, 2008, 2:46 PM EDT
In force: 36 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 18:13 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, 6.2 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: 2136 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: -2 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 25, 9:26 AM EDT, 4 hours 44 minutes earlier.

Area forecast discussion, Jun 25, 9:26 AM EDT, 4 hours 44 minutes before

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Hazardous weather outlook, Jun 25, 5:03 AM EDT, 9 hours 7 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
503 AM EDT WED JUN 25 2008

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-261000-
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-
503 AM EDT WED JUN 25 2008

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

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

SCATTERED THUNDERSTORMS ARE EXPECTED TODAY ESPECIALLY OVER NORTH
EAST FLORIDA. THE STRONGEST THUNDERSTORMS WILL BE CAPABLE OF
PRODUCING GUSTY WINDS...SMALL HAIL...AND FREQUENT LIGHTNING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE ANTICIPATED
EACH DAY. ANY THUNDERSTORM THAT DEVELOPS WILL BE CAPABLE OF
PRODUCING GUSTY WINDS...HEAVY RAIN AND FREQUENT LIGHTNING.

.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.

MKT

In the hours before

Local storm report, Jun 25, 10:30 AM EDT, 3 hours 40 minutes before

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Local storm report, Jun 25, 10:33 AM EDT, 3 hours 37 minutes before

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Special weather statement, Jun 25, 1:31 PM EDT, 39 minutes before

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Special weather statement, Jun 25, 1:46 PM EDT, 24 minutes before

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Special weather statement, Jun 25, 2:01 PM EDT, 9 minutes before

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Special weather statement, Jun 25, 2:05 PM EDT, 5 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
Jun 25, 2:56 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion, Putnam	49 min
Jun 25, 3:34 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	41 min
Jun 25, 3:47 PM EDT	Areal Flood Advisory	JAX	Marion, Putnam	88 min
Jun 25, 3:48 PM EDT	Severe Thunderstorm Warning	JAX	Marion	42 min
Jun 25, 4:16 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	44 min
Jun 25, 4:43 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Duval, Nassau	47 min
Jun 25, 5:08 PM EDT	Areal Flood Advisory	JAX	Baker, Duval, Nassau	82 min
Jun 25, 5:31 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Duval, Nassau	44 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.