Alert archive / Florida / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 97, NWS Jacksonville, FL

June 17, 20104 counties in Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 17, 2010, 7:31 PM EDT for 4 counties in Florida. It was in force for 34 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 17, 2010, 7:31 PM EDT (23:31 UTC)
Expired: Jun 17, 2010, 8:05 PM EDT
In force: 34 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Alachua County, FL, Bradford County, FL, Clay County, FL, Putnam County, FL

The radar

The Jacksonville radar (KJAX), 82 km from the middle of the area, began a volume at 23:33 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 11.5 hours before the alert went out and 210 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: 730 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1145 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: -3 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 17, 2:15 PM EDT, 5 hours 16 minutes earlier.

Area forecast discussion, Jun 17, 2:15 PM EDT, 5 hours 16 minutes before

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Hazardous weather outlook, Jun 17, 4:48 AM EDT, 14 hours 43 minutes before

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In the hours before

Special weather statement, Jun 17, 6:22 PM EDT, 1 hour 9 minutes before

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Special weather statement, Jun 17, 6:25 PM EDT, 1 hour 6 minutes before

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Special weather statement, Jun 17, 6:41 PM EDT, 50 minutes before

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Special weather statement, Jun 17, 6:56 PM EDT, 35 minutes before

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Special weather statement, Jun 17, 7:15 PM EDT, 16 minutes before

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Special weather statement, Jun 17, 7:18 PM EDT, 13 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 16, 8:42 PM EDT	Severe Thunderstorm Warning	JAX	Hamilton	21 min
Jun 16, 8:52 PM EDT	Areal Flood Advisory	JAX	Hamilton	53 min
Jun 17, 2:06 PM EDT	Special Weather Statement	JAX	Marion	24 min
Jun 17, 2:33 PM EDT	Special Weather Statement	JAX	Marion	27 min
Jun 17, 3:40 PM EDT	Special Marine Warning	JAX		95 min
Jun 17, 3:48 PM EDT	Special Weather Statement	JAX	Flagler	27 min
Jun 17, 3:49 PM EDT	Special Weather Statement	JAX	Marion	26 min
Jun 17, 4:07 PM EDT	Areal Flood Advisory	JAX	Marion	38 min
Jun 17, 4:11 PM EDT	Special Weather Statement	JAX	Marion	49 min
Jun 17, 4:15 PM EDT	Special Weather Statement	JAX	Flagler	45 min
Jun 17, 4:25 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	50 min
Jun 17, 4:28 PM EDT	Special Marine Warning	JAX		63 min
Jun 17, 4:30 PM EDT	Special Weather Statement	JAX	Duval	45 min
Jun 17, 4:52 PM EDT	Special Weather Statement	JAX	Saint Johns	53 min
Jun 17, 4:54 PM EDT	Special Weather Statement	JAX	Duval	51 min
Jun 17, 5:05 PM EDT	Special Weather Statement	JAX	Marion	40 min
Jun 17, 5:12 PM EDT	Severe Thunderstorm Warning	JAX	Flagler, Putnam, Saint Johns	48 min
Jun 17, 5:16 PM EDT	Special Weather Statement	JAX	Nassau	44 min
Jun 17, 5:24 PM EDT	Special Weather Statement	JAX	Duval	51 min
Jun 17, 5:30 PM EDT	Special Weather Statement	JAX	Duval	45 min
Jun 17, 5:32 PM EDT	Areal Flood Advisory	JAX	Flagler, Putnam, Saint Johns	43 min
Jun 17, 5:34 PM EDT	Special Marine Warning	JAX		116 min
Jun 17, 5:34 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	29 min
Jun 17, 5:43 PM EDT	Special Weather Statement	JAX	Clay	47 min
Jun 17, 5:51 PM EDT	Special Weather Statement	JAX	Nassau	39 min
Jun 17, 5:52 PM EDT	Special Weather Statement	JAX	Marion	38 min
Jun 17, 5:56 PM EDT	Special Weather Statement	JAX	Baker	49 min
Jun 17, 5:58 PM EDT	Special Weather Statement	JAX	Gilchrist	47 min
Jun 17, 6:02 PM EDT	Special Weather Statement	JAX	Saint Johns	43 min
Jun 17, 6:04 PM EDT	Special Weather Statement	JAX	Suwannee	41 min
Jun 17, 6:07 PM EDT	Special Weather Statement	JAX	Duval	23 min
Jun 17, 6:17 PM EDT	Areal Flood Advisory	JAX	Baker, Clay, Duval, Nassau	58 min
Jun 17, 6:19 PM EDT	Special Weather Statement	JAX	Bradford	41 min
Jun 17, 6:22 PM EDT	Special Weather Statement	JAX	Duval	38 min
Jun 17, 6:25 PM EDT	Special Weather Statement	JAX	Clay, Putnam	50 min
Jun 17, 6:29 PM EDT	Areal Flood Advisory	JAX	Baker, Bradford, Clay, Duval, Putnam, Union	46 min
Jun 17, 6:32 PM EDT	Severe Thunderstorm Warning	JAX	Bradford, Clay, Putnam	43 min
Jun 17, 6:41 PM EDT	Special Weather Statement	JAX	Gilchrist	49 min
Jun 17, 6:56 PM EDT	Special Weather Statement	JAX	Union	49 min
Jun 17, 7:15 PM EDT	Special Weather Statement	JAX	Alachua, Bradford, Clay, Putnam	60 min
Jun 17, 7:18 PM EDT	Special Weather Statement	JAX	Clay	42 min
Jun 17, 7:23 PM EDT	Areal Flood Advisory	JAX	Alachua, Bradford, Clay, Columbia, Gilchrist, Putnam and 3 more	52 min
Jun 17, 7:31 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	20 min
Jun 17, 7:34 PM EDT	Special Weather Statement	JAX	Suwannee	41 min
Jun 17, 7:48 PM EDT	Special Weather Statement	JAX	Saint Johns	42 min
Jun 17, 7:50 PM EDT	Special Weather Statement	JAX	Marion	40 min
Jun 17, 7:59 PM EDT	Special Weather Statement	JAX	Marion	46 min
Jun 16, 8:05 PM EDT	Special Weather Statement	JAX	Atkinson	40 min
Jun 16, 8:07 PM EDT	Special Weather Statement	JAX	Charlton	38 min
Jun 16, 8:24 PM EDT	Special Weather Statement	JAX	Bacon	51 min
Jun 16, 8:25 PM EDT	Special Weather Statement	JAX	Atkinson	50 min
Jun 16, 8:40 PM EDT	Special Weather Statement	JAX	Lowndes	50 min
Jun 16, 9:10 PM EDT	Special Weather Statement	JAX	Coffee	50 min
Jun 16, 9:12 PM EDT	Special Weather Statement	JAX	Pierce	48 min
Jun 17, 2:25 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	35 min
Jun 17, 3:14 PM EDT	Special Weather Statement	JAX	Pierce	46 min
Jun 17, 3:35 PM EDT	Special Weather Statement	JAX	Camden, Glynn	55 min

Nearby

Severe Thunderstorm Warnings in Florida, 2010 Every severe thunderstorm warning in 2010

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.