Alert archive / Florida / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 56, NWS Jacksonville, FL

May 8, 2006Duval County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at May 8, 2006, 1:36 PM EDT for Duval County, Florida. It was in force for 54 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: May 8, 2006, 1:36 PM EDT (17:36 UTC)
Expired: May 8, 2006, 2:30 PM EDT
In force: 54 min
Issued by: NWS Jacksonville, FL
Area: Counties, with a storm outline in the text

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 17 km from the middle of the area, began a volume at 17:39 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.6 hours before the alert went out and 255 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: 1250 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 475 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

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 May 8, 9:50 AM EDT, 3 hours 46 minutes earlier.

Area forecast discussion, May 8, 9:50 AM EDT, 3 hours 46 minutes before

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Hazardous weather outlook, May 8, 11:00 AM EDT, 2 hours 36 minutes before

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In the hours before

Special weather statement, May 8, 12:21 PM EDT, 1 hour 15 minutes before

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Special weather statement, May 8, 12:53 PM EDT, 43 minutes before

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Local storm report, May 8, 1:30 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
130 PM EDT MON MAY 08 2006

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

0127 PM     HAIL             YULEE                   30.63N 81.57W
05/08/2006  E0.25 INCH       NASSAU             FL   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED IN NASSAUVILLE.

&&

PKEEGAN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 1:16 PM EDT	Special Marine Warning	JAX		59 min
May 8, 1:27 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	33 min
May 8, 2:09 PM EDT	Special Marine Warning	JAX		66 min
May 8, 2:52 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	38 min
May 8, 3:33 PM EDT	Special Marine Warning	JAX		57 min
May 8, 4:04 PM EDT	Special Marine Warning	JAX		56 min
May 8, 4:55 PM EDT	Special Marine Warning	JAX		50 min
May 8, 5:20 PM EDT	Severe Thunderstorm Warning	JAX	Clay	15 min
May 8, 5:21 PM EDT	Special Marine Warning	JAX		54 min
May 8, 5:42 PM EDT	Special Marine Warning	JAX		63 min
May 8, 5:44 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Saint Johns	31 min
May 8, 6:10 PM EDT	Special Marine Warning	JAX		65 min
May 8, 6:15 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	45 min
May 8, 6:30 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	45 min
May 8, 3:25 PM EDT	Severe Thunderstorm Warning	JAX	Atkinson	35 min
May 8, 3:55 PM EDT	Severe Thunderstorm Warning	JAX	Ware	32 min
May 8, 4:09 PM EDT	Severe Thunderstorm Warning	JAX	Brantley	28 min
May 8, 4:18 PM EDT	Severe Thunderstorm Warning	JAX	Glynn	42 min

Nearby

Severe Thunderstorm Warnings in Florida, 2006 Every severe thunderstorm warning in 2006

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.