Alert archive / Florida / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 11, NWS Jacksonville, FL

March 18, 2022Duval County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Mar 18, 2022, 5:29 PM EDT for Duval County, Florida. It was in force for 46 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: Mar 18, 2022, 5:29 PM EDT (21:29 UTC)
Expired: Mar 18, 2022, 6:15 PM EDT
In force: 46 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 17 km from the middle of the area, began a volume at 21:31 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, 9.5 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1606 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 168 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 Mar 18, 3:47 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Mar 18, 3:47 PM EDT, 1 hour 42 minutes before

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In the hours before

Special weather statement, Mar 18, 12:12 PM EDT, 5 hours 17 minutes before

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Local storm report, Mar 18, 3:41 PM EDT, 1 hour 48 minutes before

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Special weather statement, Mar 18, 3:44 PM EDT, 1 hour 45 minutes before

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Local storm report, Mar 18, 4:09 PM EDT, 1 hour 20 minutes before

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Local storm report, Mar 18, 4:33 PM EDT, 56 minutes before

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Special weather statement, Mar 18, 4:39 PM EDT, 50 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
Mar 18, 4:06 AM EDT	Dense Fog Advisory	JAX	Alachua, Baker, Bradford, Clay, Duval, Gilchrist and 5 more	7 hr
Mar 18, 4:43 PM EDT	Special Marine Warning	JAX		2 hr
Mar 18, 5:29 PM EDT	Special Marine Warning	JAX		91 min
Mar 18, 6:11 PM EDT	Special Marine Warning	JAX		2 hr
Mar 18, 6:11 PM EDT	Special Weather Statement	JAX	Bradford, Clay, Columbia, Duval, Suwannee, Union	49 min
Mar 18, 6:46 PM EDT	Special Marine Warning	JAX		44 min
Mar 18, 6:46 PM EDT	Special Weather Statement	JAX	Saint Johns	29 min
Mar 18, 6:50 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	25 min
Mar 18, 6:59 PM EDT	Special Weather Statement	JAX	Bradford, Clay, Saint Johns	31 min
Mar 18, 7:06 PM EDT	Special Weather Statement	JAX	Hamilton	54 min
Mar 18, 7:32 PM EDT	Special Weather Statement	JAX	Flagler	28 min
Mar 18, 7:35 PM EDT	Special Marine Warning	JAX		85 min
Mar 18, 3:44 PM EDT	Special Weather Statement	JAX	Brantley, Clinch, Pierce, Ware	46 min
Mar 18, 4:39 PM EDT	Special Weather Statement	JAX	Camden, Charlton, Glynn	51 min
Mar 18, 5:25 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	21 min

Nearby

Severe Thunderstorm Warnings in Florida, 2022 Every severe thunderstorm warning in 2022

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.