Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 138, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 13, 2011, 5:36 PM EDT for 4 counties in Florida. It was in force for 39 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 13, 2011, 5:36 PM EDT (21:36 UTC)
- Expired
- Jun 13, 2011, 6:15 PM EDT
- In force
- 39 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
Counties Alachua County, FL, Bradford County, FL, Columbia County, FL, Union County, FL
The radar
The Jacksonville radar (KJAX), 86 km from the middle of the area, began a volume at 21:38 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
Jacksonville, FL (KJAX), launched 12:00Z, 9.6 hours before the alert went out and 88 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.
- Mixed-layer CAPE
- 1598 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 924 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 13, 2:11 PM EDT, 3 hours 25 minutes earlier.
Area forecast discussion, Jun 13, 2:11 PM EDT, 3 hours 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
211 PM EDT MON JUN 13 2011
...HEAT AND SMOKE HIGHLIGHT OUR WEATHER THE NEXT FEW DAYS...
.SHORT TERM...TNGT THRU WED NGT...VISIBLE SATELLITE IMAGERY
SHOWS SEVERAL SMOKE PLUMES ACROSS FAR SE GA AND NE FL...WITH
SMOKE SPREADING E TO SE. AREAS AFFECTED BY SMOKE TODAY LIKELY TO
SEE IT AGAIN TUE AND WED WITH LITTLE CHANGE IN W TO NW LLVL FLOW.
MODEL GUID CONTINUES TO SUGGEST HIGH 1000-850 MB TEMP/THICKNESS
VALUES ACRS FAR SRN GA AND NRN FL SUPPORTING HIGH TEMPS NEAR 100
DEGREES. MODELS INDICATE MORE IN WAY OF E COAST SEA BREEZE
INTRUSION BY WED AFTN...AND ALSO INDICATE SLIGHT COOLING OF
850-925MB TEMPS SCTRL GA...BUT TEMPS WILL BE ABOVE NORMAL AREA
WIDE. LLVL TEMPS/THICKNESSES SUPPORT 100 DEG JAX AREA TUE/WED...
BUT SMOKE AND E COAST SEA BREEZE (ESP WED AFTN) MAY KEEP TEMPS A
LITTLE BELOW. MODELS SUGGEST HIGHER TEMP/THICKNESS VALUES
SUPPORTING NEAR 100 DEG TEMPS GNV/OCF AREAS TUE/WED. WILL INDICATE
'NEAR RECORD HIGH TEMPS' IN FCST FOR TMRW.
SHORTWAVE PASSES OVER AREA TNGT...WILL MAINTAIN AT LEAST SLIGHT
CHANCE PCPN THRU THE NGT SRN AREAS DUE TO WEAK FRONTAL BOUNDARY
AND SHORTWAVE ALOFT. SHORTWAVE MOVES OVER SRN AREAS TUE...AND
CONFINING LOW POPS TO SRN HALF OF FCST AREA. SLIGHTLY HIGHER POPS
FOR WED INTERIOR PORTION OF NE FL AS MODELS SUGGEST BETTER
COVERAGE GIVEN SEA BREEZE INTERSECTION LAKE CITY-GNV-OCF CORRIDOR.
.LONG TERM...THU THRU MON...MODEL GUID MAINTAINS ABOVE NORMAL TEMPS
THRU WEEKEND. MODELS SUGGEST MORE ERN SEA BREEZE INTERSECTION LATE
THU...SO SLIGHTLY HIGHER POPS EASTERN HALF OF FCST AREA. WILL
MAINAIN LOW POPS THRU WEEKEND MAINLY ALONG SEA BREEZE BOUNDARIES.
&&
.AVIATION...
GENERALLY VFR CONDITIONS CONTINUE THROUGH THE EVENING HOURS EXCEPT
LOWER IN THE VICINITY OF THUNDERSTORMS THIS AFTERNOON. VISIBILITIES
CONTINUE TO BE RESTRICTED TO MVFR VALUES...AND LOCALLY BELOW 3 MILES
IMMEDIATELY DOWNSTREAM OF FIRE LOCATIONS. FOR OVERNIGHT...FOG SHOULD
NOT BE A BIG ISSUE AS WINDS NOT EXPECTED TO DECOUPLE...THOUGH SMOKE
WILL CONTINUE TO RESTRICT VISIBILITIES IN AREAS DOWNSTREAM OF
FIRES.
&&
.MARINE...
OFFSHORE FLOW WILL CONTINUE TO PRODUCE RESTRICTED VISIBILITES
THROUGH PORTIONS OF THE OFFSHORE WATERS DUE TO SMOKE.
&&
.FIRE WEATHER...
WILL MAINTAIN FIRE WEATHER WATCH FOR TUESDAY AFTERNOON INTERIOR
NORTH FLORIDA AS HIGH TEMPERATURES ALLOW LOW LEVEL MOISTURE TO MIX
OUT PRODUCING EXTENDED PERIOD OF LOW RH'S...AND ERC'S APPROACHING 40.
&&
.PRELIMINARY POINT TEMPS/POPS...
AMG 70 97 71 99 / 10 10 10 20
SSI 74 94 75 93 / 20 10 10 20
JAX 73 98 72 98 / 20 10 10 20
SGJ 75 94 74 93 / 20 10 10 20
GNV 72 100 73 100 / 20 20 10 30
OCF 71 99 73 99 / 20 20 10 30
&&
.JAX WATCHES/WARNINGS/ADVISORIES...
FL...RED FLAG WARNING UNTIL 6 PM EDT THIS EVENING FOR COLUMBIA-
HAMILTON-SUWANNEE.
FIRE WEATHER WATCH TUESDAY AFTERNOON FOR BAKER-COLUMBIA-
HAMILTON-SUWANNEE-UNION-GILCHRIST-ALACHUA-BRADFORD.
GA...NONE.
AM...NONE.
&&
WOLF/LETRO/WALKERHazardous weather outlook, Jun 13, 5:12 AM EDT, 12 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 512 AM EDT MON JUN 13 2011 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-140915- 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- 512 AM EDT MON JUN 13 2011 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...TODAY AND TONIGHT... SMOKE FROM AREA WILDFIRES WILL CONTINUE TO CAUSE PERIODIC VISIBILITY RESTRICTIONS NEAR THE FIRES. A TROUGH OF LOW PRESSURE WILL SLOWLY MOVE SOUTHEAST ACROSS THE REGION THROUGH TONIGHT...WHICH WILL LEAD TO MAINLY AFTERNOON AND EVENING ISOLATED TO SCATTERED THUNDERSTORMS. A FEW STRONG STORMS WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... THERE IS A CHANCE FOR PRIMARILY AFTERNOON AND EVENING ISOLATED TO SCATTERED THUNDERSTORMS EACH DAY THIS PERIOD. .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. LS
In the hours before
Special weather statement, Jun 13, 5:15 PM EDT, 21 minutes before
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</html>The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 5:12 AM EDT | Fire Weather Watch | JAX | Baker, Bradford, Gilchrist, Suwannee, Union | 23 hr |
| Jun 13, 9:37 AM EDT | Red Flag Warning | JAX | Suwannee | 8 hr |
| Jun 13, 2:22 PM EDT | Special Weather Statement | JAX | Marion | 38 min |
| Jun 13, 2:49 PM EDT | Special Weather Statement | JAX | Marion | 41 min |
| Jun 13, 2:53 PM EDT | Special Weather Statement | JAX | Nassau | 52 min |
| Jun 13, 3:14 PM EDT | Special Weather Statement | JAX | Marion | 46 min |
| Jun 13, 3:47 PM EDT | Special Weather Statement | JAX | Saint Johns | 43 min |
| Jun 13, 4:00 PM EDT | Special Weather Statement | JAX | Alachua | 45 min |
| Jun 13, 4:04 PM EDT | Areal Flood Advisory | JAX | Clay, Putnam | 116 min |
| Jun 13, 4:16 PM EDT | Special Weather Statement | JAX | Suwannee | 44 min |
| Jun 13, 4:23 PM EDT | Areal Flood Advisory | JAX | Alachua | 2 hr |
| Jun 13, 4:26 PM EDT | Special Weather Statement | JAX | Duval | 49 min |
| Jun 13, 4:28 PM EDT | Special Weather Statement | JAX | Flagler | 47 min |
| Jun 13, 4:36 PM EDT | Special Weather Statement | JAX | Flagler | 39 min |
| Jun 13, 4:40 PM EDT | Special Marine Warning | JAX | 95 min | |
| Jun 13, 4:46 PM EDT | Severe Thunderstorm Warning | JAX | Flagler | 44 min |
| Jun 13, 4:49 PM EDT | Special Marine Warning | JAX | 56 min | |
| Jun 13, 4:50 PM EDT | Special Weather Statement | JAX | Union | 40 min |
| Jun 13, 5:00 PM EDT | Severe Thunderstorm Warning | JAX | Duval, Saint Johns | 45 min |
| Jun 13, 5:08 PM EDT | Special Weather Statement | JAX | Suwannee | 52 min |
| Jun 13, 5:15 PM EDT | Special Weather Statement | JAX | Duval | 45 min |
| Jun 13, 5:28 PM EDT | Special Weather Statement | JAX | Flagler | 47 min |
| Jun 13, 5:33 PM EDT | Special Weather Statement | JAX | Clay | 42 min |
| Jun 13, 5:57 PM EDT | Areal Flood Advisory | JAX | Alachua, Bradford, Columbia, Union | 2 hr |
| Jun 13, 6:06 PM EDT | Special Weather Statement | JAX | Alachua, Gilchrist | 39 min |
| Jun 13, 6:12 PM EDT | Special Weather Statement | JAX | Duval | 48 min |
| Jun 13, 6:19 PM EDT | Special Weather Statement | JAX | Saint Johns | 41 min |
| Jun 13, 6:25 PM EDT | Special Marine Warning | JAX | 95 min | |
| Jun 13, 6:31 PM EDT | Special Weather Statement | JAX | Nassau | 44 min |
| Jun 13, 6:36 PM EDT | Special Weather Statement | JAX | Hamilton | 39 min |
| Jun 13, 6:55 PM EDT | Special Weather Statement | JAX | Saint Johns | 50 min |
| Jun 13, 7:16 PM EDT | Special Weather Statement | JAX | Nassau | 44 min |
| Jun 13, 7:52 PM EDT | Special Weather Statement | JAX | Duval | 38 min |
| Jun 12, 9:10 PM EDT | Special Weather Statement | JAX | Atkinson | 50 min |
| Jun 12, 9:26 PM EDT | Severe Thunderstorm Warning | JAX | Atkinson, Clinch, Coffee, Ware | 34 min |
| Jun 12, 9:58 PM EDT | Special Weather Statement | JAX | Ware | 32 min |
| Jun 12, 10:17 PM EDT | Special Weather Statement | JAX | Clinch, Echols | 43 min |
| Jun 13, 3:33 PM EDT | Special Weather Statement | JAX | Glynn | 27 min |
| Jun 13, 7:44 PM EDT | Special Weather Statement | JAX | Wayne | 46 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2011Every 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.