Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 140, NWS Jacksonville, FL

June 14, 2011Alachua County, Gilchrist County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 14, 2011, 5:43 PM EDT for Alachua County, Gilchrist 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: Jun 14, 2011, 5:43 PM EDT (21:43 UTC)
Expired: Jun 14, 2011, 6:11 PM EDT
In force: 28 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Alachua County, FL, Gilchrist County, FL

The radar

The Jacksonville radar (KJAX), 121 km from the middle of the area, began a volume at 21:44 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

Tampa Bay, FL (KTBW), launched 12:00Z, 9.7 hours before the alert went out and 223 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: 967 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 984 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 34 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 Jun 14, 2:49 PM EDT, 2 hours 54 minutes earlier.

Area forecast discussion, Jun 14, 2:49 PM EDT, 2 hours 54 minutes before

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Hazardous weather outlook, Jun 14, 9:03 AM EDT, 8 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
903 AM EDT TUE JUN 14 2011

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-142100-
ALACHUA-APPLING-ATKINSON-BACON-BAKER-BRADFORD-BRANTLEY-
CAMDEN (COASTAL)-CAMDEN (INLAND)-CHARLTON-CLAY-CLINCH-COFFEE-
COLUMBIA-DUVAL-ECHOLS-FLAGLER-GILCHRIST-GLYNN (COASTAL)-
GLYNN (INLAND)-HAMILTON-JEFF DAVIS-MARION-NASSAU-PIERCE-PUTNAM-
ST JOHNS-SUWANNEE-UNION-WARE-WAYNE-
903 AM EDT TUE JUN 14 2011

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

.DAY ONE...TODAY AND TONIGHT...

...SMOKE FROM WILDFIRES WILL IMPACT AREAS GENERALLY NEAR AND EAST OF
HIGHWAY 301...

SMOKE FROM SEVERAL FIRES ACROSS THE AREA WILL BE BLOWN BY WEST TO
NORTHWEST WINDS INTO EASTERN AREAS FROM BRUNSWICK AND THE
JACKSONVILLE METRO AREA TO SAINT AUGUSTINE AND PALM COAST. RESIDENTS
WITH RESPIRATORY PROBLEMS SHOULD CONSIDER STAYING INDOORS AS MUCH AS
POSSIBLE.

HEAT INDICES WILL RISE TO OVER 100 DEGREES ACROSS MUCH OF THE AREA
THIS AFTERNOON. RESIDENTS SHOULD DRINK PLENTY OF FLUIDS IF OUTSIDE.

A FEW THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON...MAINLY FROM OCALA
TO PALM COAST AND THEN ALONG U.S. HIGHWAY 301 INTO THE SUWANNEE
VALLEY. A FEW STRONG TO POSSIBLY SEVERE THUNDERSTORMS WILL BE
POSSIBLE IN INTERIOR AREAS.

THERE WILL BE AN ELEVATED FIRE DANGER THIS AFTERNOON FOR PORTIONS OF
INTERIOR NORTHEAST FLORIDA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE EACH DAY. MOST
STORMS WILL DEVELOP IN RESPONSE TO AFTERNOON SEABREEZES. HOWEVER...
WEAK ATMOSPHERIC DISTURBANCES MAY INCREASE CHANCES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME.

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

SANDRIK/CARROLL

In the hours before

Special weather statement, Jun 14, 4:42 PM EDT, 1 hour 1 minute before

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Special weather statement, Jun 14, 4:44 PM EDT, 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
444 PM EDT TUE JUN 14 2011

FLZ040-142130-
MARION-
444 PM EDT TUE JUN 14 2011

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHERN MARION
COUNTY FOR STRONG WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING VALID
UNTIL 530 PM EDT...

AT 445 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 5 MILES SOUTH OF SUMMERFIELD...OR 5
MILES WEST OF THE VILLAGES...MOVING EAST AT 10 MPH. THIS STRONG
THUNDERSTORM WILL ALSO AFFECT AREAS AROUND SUMMERFIELD...LAKE WEIR
AND WEIRSDALE THROUGH 530 PM EDT. HAIL UP TO THREE QUARTER INCH IN
DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45
TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 2897 8220 2904 8199 2896 8182 2895 8185
      2895 8218
TIME...MOT...LOC 2045Z 292DEG 7KT 2894 8202

ENYEDI

Special weather statement, Jun 14, 4:52 PM EDT, 51 minutes before

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Local storm report, Jun 14, 5:17 PM EDT, 26 minutes before

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Special weather statement, Jun 14, 5:27 PM EDT, 16 minutes before

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Local storm report, Jun 14, 5:40 PM EDT, 3 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
Jun 13, 8:00 PM EDT	Special Marine Warning	JAX		2 hr
Jun 13, 8:03 PM EDT	Special Weather Statement	JAX	Duval, Nassau	42 min
Jun 13, 8:05 PM EDT	Special Weather Statement	JAX	Columbia, Suwannee	40 min
Jun 13, 8:40 PM EDT	Special Weather Statement	JAX	Bradford, Duval	50 min
Jun 13, 9:30 PM EDT	Special Marine Warning	JAX		90 min
Jun 13, 9:50 PM EDT	Special Weather Statement	JAX	Gilchrist	25 min
Jun 14, 4:02 AM EDT	Red Flag Warning	JAX	Baker, Bradford, Gilchrist, Suwannee, Union	14 hr
Jun 14, 3:02 PM EDT	Fire Weather Watch	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	12 hr
Jun 14, 3:30 PM EDT	Special Weather Statement	JAX	Marion	45 min
Jun 14, 3:59 PM EDT	Special Weather Statement	JAX	Marion	46 min
Jun 14, 4:42 PM EDT	Special Weather Statement	JAX	Gilchrist	63 min
Jun 14, 4:44 PM EDT	Special Weather Statement	JAX	Marion	46 min
Jun 14, 4:50 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Gilchrist, Suwannee	40 min
Jun 14, 4:52 PM EDT	Special Weather Statement	JAX	Alachua	38 min
Jun 14, 5:27 PM EDT	Special Weather Statement	JAX	Gilchrist	63 min
Jun 14, 6:10 PM EDT	Special Weather Statement	JAX	Gilchrist	65 min
Jun 13, 8:33 PM EDT	Special Weather Statement	JAX	Charlton	42 min
Jun 13, 8:41 PM EDT	Special Weather Statement	JAX	Glynn	34 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011 Every severe thunderstorm warning in 2011

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.