Alert archive / Florida / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 167, NWS Jacksonville, FL

June 22, 20094 counties in Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 22, 2009, 8:11 PM EDT for 4 counties in Florida. It was in force for 64 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 22, 2009, 8:11 PM EDT (00:11 UTC)
Expired
Jun 22, 2009, 9:15 PM EDT
In force
64 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Clay County, FL, Duval County, FL, Nassau County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 31 km from the middle of the area, began a volume at 00:11 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 22, 7:09 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 0.2 hours before the alert went out and 224 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 00:00Z on 2009-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1135 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2009-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.193958Sfc1 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
1135 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1425 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 22, 7:19 PM EDT, 52 minutes earlier.

Area forecast discussion, Jun 22, 7:19 PM EDT, 52 minutes before
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Hazardous weather outlook, Jun 22, 7:00 PM EDT, 1 hour 11 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE JACKSONVILLE FL
700 PM EDT MON JUN 22 2009

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-231200-
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COFFEE-
JEFF DAVIS-BACON-APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-
INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-
COASTAL CAMDEN-
700 PM EDT MON JUN 22 2009

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

.DAY ONE...THIS EVENING AND TONIGHT...

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF SOUTHEAST GEORGIA
THROUGH 10 PM...
...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF NORTHEAST FLORIDA
THROUGH 1 AM...

THUNDERSTORMS WITH A LONG HISTORY OF PRODUCING SEVERE WEATHER WILL
CONTINUE TO MOVE THROUGH THE AREA FOR THE FIRST PAST OF THE
OVERNIGHT PERIOD. DAMAGING WINDS OF 60 TO 70 MPH ALONG WITH LARGE
HAIL ARE THE MAIN CONCERNS ALTHOUGH AN ISOLATED TORNADO CANNOT BE
RULED OUT AS THE STORMS PROPAGATE SOUTHWARD ALONG THE EAST COAST
SEABREEZE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THERE WILL BE A CHANCE OF THUNDERSTORMS EACH DAY...PRIMARILY IN
THE AFTERNOON AND EARLY EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ARE REQUESTED TO ACTIVATE IF POSSIBLE.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.

PP/MZ/JTD

In the hours before

Local storm report, Jun 22, 6:52 PM EDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
652 PM EDT MON JUN 22 2009

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

0620 PM     HAIL             WAYCROSS                31.21N 82.36W
06/22/2009  M0.75 INCH       WARE               GA   TRAINED SPOTTER

            A TRAINED SPOTTER AT THE INTERSECTION OF US1 AND 82
            REPORTED ESTIMATED 60 MILE AN HOUR WINDS PEELING PAPER
            OFF BILLBOARDS AS WELL AS PENNY SIZE HAIL.

&&

PKEEGAN
Local storm report, Jun 22, 7:13 PM EDT, 58 minutes before
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Special weather statement, Jun 22, 7:14 PM EDT, 57 minutes before
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Special weather statement, Jun 22, 7:16 PM EDT, 55 minutes before
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Local storm report, Jun 22, 7:46 PM EDT, 25 minutes before
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Local storm report, Jun 22, 7:51 PM EDT, 20 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 8:07 PM EDTSpecial Weather StatementJAXSaint Johns38 min
Jun 22, 8:17 PM EDTSpecial Marine WarningJAX118 min
Jun 22, 8:50 PM EDTSpecial Marine WarningJAX25 min
Jun 22, 8:56 PM EDTSpecial Marine WarningJAX2 hr
Jun 22, 9:03 PM EDTSpecial Weather StatementJAXSuwannee27 min
Jun 22, 9:29 PM EDTSpecial Weather StatementJAXFlagler31 min
Jun 22, 10:57 PM EDTSpecial Weather StatementJAXAlachua48 min
Jun 23, 5:34 AM EDTSpecial Weather StatementJAXMarion26 min
Jun 23, 2:02 PM EDTSpecial Weather StatementJAXSaint Johns28 min
Jun 23, 2:17 PM EDTSpecial Weather StatementJAXSuwannee28 min
Jun 23, 2:37 PM EDTSpecial Weather StatementJAXFlagler53 min
Jun 23, 2:46 PM EDTSpecial Weather StatementJAXColumbia, Gilchrist44 min
Jun 23, 3:11 PM EDTSpecial Weather StatementJAXMarion49 min
Jun 23, 3:22 PM EDTSpecial Weather StatementJAXAlachua38 min
Jun 23, 3:32 PM EDTSpecial Weather StatementJAXGilchrist28 min
Jun 23, 3:58 PM EDTSpecial Weather StatementJAXAlachua47 min
Jun 23, 4:05 PM EDTAreal Flood AdvisoryJAXAlachua71 min
Jun 23, 4:45 PM EDTSpecial Weather StatementJAXPutnam45 min
Jun 23, 4:56 PM EDTSpecial Weather StatementJAXMarion34 min
Jun 23, 5:36 PM EDTSpecial Weather StatementJAXGilchrist39 min
Jun 23, 6:06 PM EDTSpecial Weather StatementJAXGilchrist39 min
Jun 22, 8:16 PM EDTSpecial Weather StatementJAXCoffee29 min
Jun 22, 9:59 PM EDTSpecial Weather StatementJAXEchols61 min

Nearby

Severe Thunderstorm Warnings in Florida, 2009Every severe thunderstorm warning in 2009

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.