Alert archive / Florida / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 34, NWS Jacksonville, FL

April 6, 2022Duval County, Nassau County, Florida; Camden County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 6, 2022, 1:56 PM EDT for Duval County, Nassau County, Florida; Camden County, Georgia. It was in force for 26 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: Apr 6, 2022, 1:56 PM EDT (17:56 UTC)
Expired: Apr 6, 2022, 2:22 PM EDT
In force: 26 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Duval County, FL, Nassau County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 15 km from the middle of the area, began a volume at 17:59 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, 5.9 hours before the alert went out and 252 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: 1825 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 485 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.1

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 Apr 6, 12:21 PM EDT, 1 hour 35 minutes earlier.

Area forecast discussion, Apr 6, 12:21 PM EDT, 1 hour 35 minutes before

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In the hours before

Local storm report, Apr 6, 10:20 AM EDT, 3 hours 36 minutes before

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Local storm report, Apr 6, 10:25 AM EDT, 3 hours 31 minutes before

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Special weather statement, Apr 6, 1:03 PM EDT, 53 minutes before

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Special weather statement, Apr 6, 1:08 PM EDT, 48 minutes before

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Special weather statement, Apr 6, 1:18 PM EDT, 38 minutes before

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Special weather statement, Apr 6, 1:46 PM EDT, 10 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
Apr 5, 8:25 PM EDT	Special Weather Statement	JAX	Nassau	35 min
Apr 6, 1:03 PM EDT	Special Weather Statement	JAX	Saint Johns	27 min
Apr 6, 1:04 PM EDT	Special Marine Warning	JAX		56 min
Apr 6, 1:18 PM EDT	Special Weather Statement	JAX	Putnam	27 min
Apr 6, 1:38 PM EDT	Severe Thunderstorm Warning	JAX	Flagler, Putnam, Saint Johns	52 min
Apr 6, 1:40 PM EDT	Special Marine Warning	JAX		65 min
Apr 6, 1:46 PM EDT	Special Weather Statement	JAX	Nassau	29 min
Apr 6, 2:04 PM EDT	Special Marine Warning	JAX		56 min
Apr 6, 2:29 PM EDT	Special Marine Warning	JAX		91 min
Apr 6, 2:31 PM EDT	Special Weather Statement	JAX	Flagler	29 min
Apr 6, 2:32 PM EDT	Special Marine Warning	JAX		58 min
Apr 6, 2:47 PM EDT	Special Weather Statement	JAX	Marion	28 min
Apr 6, 3:11 PM EDT	Small Craft Advisory	JAX		36 hr
Apr 6, 3:19 PM EDT	Special Marine Warning	JAX		41 min
Apr 5, 8:00 PM EDT	Special Weather Statement	JAX	Charlton	30 min
Apr 6, 1:08 PM EDT	Special Weather Statement	JAX	Charlton	52 min
Apr 6, 2:05 PM EDT	Special Weather Statement	JAX	Charlton	25 min
Apr 6, 2:23 PM EDT	Special Weather Statement	JAX	Camden	37 min

Nearby

Severe Thunderstorm Warnings in Florida, 2022 Severe Thunderstorm Warnings in Georgia, 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.