Alert archive / Florida / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 211, NWS Jacksonville, FL

August 17, 2022Clay County, Putnam County, Saint Johns County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Aug 17, 2022, 6:47 PM EDT for Clay County, Putnam County, Saint Johns County, Florida. It was in force for 28 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
Aug 17, 2022, 6:47 PM EDT (22:47 UTC)
Expired
Aug 17, 2022, 7:15 PM EDT
In force
28 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clay County, FL, Putnam County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 72 km from the middle of the area, began a volume at 22:46 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, 10.8 hours before the alert went out and 190 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-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 2022-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2022-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1446 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
-30 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 Aug 17, 3:58 PM EDT, 2 hours 49 minutes earlier.

Area forecast discussion, Aug 17, 3:58 PM EDT, 2 hours 49 minutes before
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In the hours before

Special weather statement, Aug 17, 6:21 PM EDT, 26 minutes before
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Local storm report, Aug 17, 6:24 PM EDT, 23 minutes before
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Special weather statement, Aug 17, 6:36 PM EDT, 11 minutes before
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Local storm report, Aug 17, 6:43 PM EDT, 4 minutes before
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Special weather statement, Aug 17, 6:44 PM EDT, 3 minutes before
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Special weather statement, Aug 17, 6:47 PM EDT, 0 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 2:03 PM EDTSpecial Weather StatementJAXMarion42 min
Aug 17, 2:08 PM EDTSpecial Weather StatementJAXMarion37 min
Aug 17, 2:33 PM EDTSevere Thunderstorm WarningJAXMarion27 min
Aug 17, 2:42 PM EDTSpecial Weather StatementJAXMarion33 min
Aug 17, 2:57 PM EDTFlash Flood WarningJAXMarion93 min
Aug 17, 2:59 PM EDTSevere Thunderstorm WarningJAXMarion31 min
Aug 17, 3:06 PM EDTSpecial Weather StatementJAXMarion24 min
Aug 17, 3:26 PM EDTSpecial Weather StatementJAXMarion34 min
Aug 17, 3:32 PM EDTSpecial Weather StatementJAXLake28 min
Aug 17, 4:02 PM EDTSpecial Weather StatementJAXLake28 min
Aug 17, 4:16 PM EDTSpecial Marine WarningJAX59 min
Aug 17, 4:28 PM EDTSpecial Weather StatementJAXSuwannee32 min
Aug 17, 4:31 PM EDTSpecial Weather StatementJAXFlagler29 min
Aug 17, 4:37 PM EDTSpecial Weather StatementJAXGilchrist23 min
Aug 17, 4:46 PM EDTSpecial Weather StatementJAXFlagler44 min
Aug 17, 4:47 PM EDTSpecial Marine WarningJAX36 min
Aug 17, 4:53 PM EDTSevere Thunderstorm WarningJAXGilchrist37 min
Aug 17, 5:01 PM EDTSpecial Weather StatementJAXDuval29 min
Aug 17, 5:06 PM EDTSpecial Marine WarningJAX54 min
Aug 17, 5:07 PM EDTSpecial Weather StatementJAXSuwannee23 min
Aug 17, 5:10 PM EDTSpecial Weather StatementJAXHamilton35 min
Aug 17, 5:17 PM EDTSpecial Weather StatementJAXDuval, Nassau43 min
Aug 17, 5:28 PM EDTSevere Thunderstorm WarningJAXAlachua, Gilchrist32 min
Aug 17, 5:37 PM EDTSevere Thunderstorm WarningJAXDuval, Saint Johns23 min
Aug 17, 5:39 PM EDTAreal Flood WarningJAXGilchrist2 hr
Aug 17, 5:42 PM EDTSpecial Marine WarningJAX93 min
Aug 17, 5:48 PM EDTSpecial Weather StatementJAXClay, Saint Johns87 min
Aug 17, 6:00 PM EDTSpecial Weather StatementJAXGilchrist30 min
Aug 17, 6:00 PM EDTSevere Thunderstorm WarningJAXDuval, Saint Johns30 min
Aug 17, 6:10 PM EDTSpecial Weather StatementJAXHamilton35 min
Aug 17, 6:12 PM EDTAreal Flood WarningJAXGilchrist2 hr
Aug 17, 6:19 PM EDTSpecial Weather StatementJAXGilchrist26 min
Aug 17, 6:21 PM EDTSpecial Weather StatementJAXUnion24 min
Aug 17, 6:23 PM EDTSevere Thunderstorm WarningJAXClay, Saint Johns37 min
Aug 17, 6:40 PM EDTSpecial Marine WarningJAX65 min
Aug 17, 6:42 PM EDTSpecial Marine WarningJAX70 min
Aug 17, 6:47 PM EDTSpecial Weather StatementJAXAlachua43 min
Aug 17, 7:00 PM EDTSpecial Weather StatementJAXPutnam30 min
Aug 17, 7:02 PM EDTSpecial Weather StatementJAXNassau28 min
Aug 17, 7:14 PM EDTSevere Thunderstorm WarningJAXPutnam, Saint Johns31 min
Aug 17, 7:25 PM EDTSpecial Weather StatementJAXSaint Johns35 min
Aug 17, 7:34 PM EDTSpecial Marine WarningJAX56 min
Aug 17, 7:44 PM EDTSpecial Marine WarningJAX91 min
Aug 17, 7:46 PM EDTSpecial Marine WarningJAX89 min
Aug 17, 7:56 PM EDTSpecial Weather StatementJAXFlagler49 min
Aug 17, 5:50 PM EDTSpecial Weather StatementJAXBrantley, Camden, Glynn85 min
Aug 17, 6:36 PM EDTSpecial Weather StatementJAXCharlton24 min
Aug 17, 6:44 PM EDTSpecial Weather StatementJAXCamden46 min

Nearby

Severe Thunderstorm Warnings in Florida, 2022Every 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.