Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 193, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 24, 2011, 3:56 PM EDT for Flagler County, Saint Johns County, Florida. It was in force for 34 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 24, 2011, 3:56 PM EDT (19:56 UTC)
- Expired
- Jun 24, 2011, 4:30 PM EDT
- In force
- 34 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
Counties Flagler County, FL, Saint Johns County, FL
The radar
The Jacksonville radar (KJAX), 94 km from the middle of the area, began a volume at 19:55 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, 7.9 hours before the alert went out and 96 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
- 1440 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1081 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 54 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 24, 2:24 PM EDT, 1 hour 32 minutes earlier.
Area forecast discussion, Jun 24, 2:24 PM EDT, 1 hour 32 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 224 PM EDT FRI JUN 24 2011 .SYNOPSIS...UPPER RIDGE CONTINUES TO WEAKEN OVER S CENTRAL FL WITH TROF OVER E 1/3 OF THE LOWER 48. PLUME OF DEEP LAYER MOISTURE NOW EXTENDS FROM THE E PAC ACROSS THE JAX COUNTY WARNING AREA. SAT DERIVED PRECIP H2O IS NOW AROUND 2 INCHES ACROSS MOST OF THE AREA. TSTMS HAVE CONTINUED TO DEVELOP AND MOVE ENE ACROSS THE AREA WITH THE STRONGEST STORMS NOW OVER THE JAX METRO AREA. OVERALL COVERAGE AND INTENSITY OF STORMS HAS BEEN KEPT DOWN SO FAR BECAUSE OF CLOUD COVER. HOWEVER...WITH INSTABILITY IN PLACE AND SOME DYNAMIC FORCING FROM ELONGATED VORTICITY MAX...EXPECT PRECIP TO CONTINUE INTO THE EVENING. MAY BE SOME LOCALLY HEAVY RAINFALL IN AREAS WHERE CONVECTION IS ORIENTED ALONG MEAN FLOW SINCE STORM MOTIONS HAVE BEEN RELATIVELY SLOW. AS EXPECTED...TEMPS HAVE BEEN HELD DOWN. DUE TO CLOUDS AND PRECIP. SE CORNER OF THE AREA STILL MANAGING TO REACH THE MID 90S DUE TO MORE SUN. .SHORT TERM...DIURNAL CONVECTION WILL CONTINUE WITH POPS JUST ABOVE NORMAL OVER S 1/3 OF THE AREA DUE TO LOCATION OF MOISTURE AXIS. N ZONES WILL SEE POPS JUST BELOW NORMAL DUE TO PROXIMITY OF DRIER AIR. STORM MOTION WILL BE SLOW THRU THIS PERIOD...SO PORTIONS OF NE FL MAY END UP WITH SOME MUCH NEEDED RAINFALL. TEMPS WILL BE NEAR TO SLIGHTLY ABOVE NORMAL WITH THE COOLEST TEMPS LIKELY OVER THE S DUE TO CLOUD COVER AND PRECIP. .LONG TERM...HAVE MADE FEW CHANGES TO THE EXTENDED PACKAGE. TEMPS WILL AVERAGE JUST ABOVE NORMAL WITH NEAR NORMAL POPS. && .AVIATION...HAVE TEMPO TSRA IN TAFS THROUGH AROUND 00Z. TEMPORARY IFR WITH STRONG GUSTY WINDS IN HEAVY SHOWERS...OTHERWISE VFR OUTSIDE SHOWER ACTIVITY. PATCHY FOG LATE TONIGHT AFTER AROUND 06Z. && .MARINE...NO HEADLINES AS WINDS AND SEAS REMAIN BELOW CRITERIA. SW WINDS WILL BECOME SE WITH AFTERNOON SEABREEZES...LESS THAN 15 KNOTS. SEAS 3 FEET OR LESS. && .PRELIMINARY POINT TEMPS/POPS... AMG 71 95 71 97 / 20 40 30 40 SSI 75 91 76 92 / 20 30 20 30 JAX 73 92 73 94 / 30 40 20 30 SGJ 74 89 74 90 / 40 40 20 30 GNV 71 92 70 94 / 40 50 20 40 OCF 72 91 71 93 / 40 50 20 40 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && CARROLL/ZIBURA/KEEGAN
Hazardous weather outlook, Jun 24, 10:15 AM EDT, 5 hours 41 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 1015 AM EDT FRI JUN 24 2011 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-251000- 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- 1015 AM EDT FRI JUN 24 2011 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. ...SCATTERED TO NUMEROUS THUNDERSTORMS TODAY... ...ISOLATED STRONG TO SEVERE STORMS POSSIBLE... .DAY ONE...TODAY AND TONIGHT... THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG THE GULF COAST AND SPREAD NORTHEAST. SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS THE AREA TODAY WITH STORMS BECOMING MOST NUMEROUS IN NORTHEAST FLORIDA GENERALLY EAST OF THE HIGHWAY 301 CORRIDOR BY MID-AFTERNOON. A FEW STORMS MAY BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL. FREQUENT CLOUD-TO-GROUND LIGHTNING WILL OCCUR WITH ANY THUNDERSTORMS. AREAS OF SMOKE WILL PRIMARILY REMAIN CONFINED TO AREAS NEAR AND JUST NORTHEAST OF THE HONEY PRAIRIE WILDFIRE COMPLEX. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... MAINLY SEASONAL TEMPERATURES ARE FORECAST WITH TYPICAL SUMMERTIME THUNDERSTORMS. LOCALLY HEAVY DOWNPOURS...GUSTY WINDS...SMALL HAIL...AND FREQUENT CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED IN THESE STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED TODAY. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. JDS/SEC
In the hours before
Special weather statement, Jun 24, 2:56 PM EDT, 1 hour before
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</html>Special weather statement, Jun 24, 3:09 PM EDT, 47 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
309 PM EDT FRI JUN 24 2011
FLZ040-242000-
MARION-
309 PM EDT FRI JUN 24 2011
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CENTRAL MARION
COUNTY FOR STRONG WINDS VALID UNTIL 400 PM EDT...
AT 310 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 10 MILES SOUTHWEST OF OCALA AIRPORT...OR
10 MILES SOUTHEAST OF RAINBOW LAKES ESTATES...MOVING NORTH AT 20 MPH.
THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND SANTOS...OCALA
AIRPORT AND OCALA THROUGH 400 PM EDT. GUSTY WINDS OF 40 TO 50 MPH CAN
BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE. HEAVY RAINFALL
WILL PRODUCE PONDING OF WATER ON ROADWAYS AND MINOR FLOODING OF
LOW-LYING AREAS.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 2925 8207 2896 8210 2897 8230 2902 8241
2926 8239
TIME...MOT...LOC 1910Z 180DEG 17KT 2907 8232
ZIBURASpecial weather statement, Jun 24, 3:27 PM EDT, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
327 PM EDT FRI JUN 24 2011
FLZ036-040-242015-
ALACHUA-MARION-
327 PM EDT FRI JUN 24 2011
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHEASTERN
ALACHUA AND NORTHERN MARION COUNTIES FOR STRONG WINDS VALID UNTIL 415
PM EDT...
AT 328 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER CROSS CREEK...OR 6 MILES NORTHWEST
OF CITRA...MOVING SOUTHEAST AT 5 MPH. THIS STRONG THUNDERSTORM WILL
ALSO AFFECT AREAS AROUND MCINTOSH...LOCHLOOSA...CROSS CREEK...
SPARR...REDDICK...LOWELL...CITRA AND ANTHONY THROUGH 415 PM EDT.
GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
WIND DAMAGE.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 2926 8230 2953 8221 2953 8206 2947 8206
2950 8201 2951 8197 2950 8197 2926 8202
TIME...MOT...LOC 1928Z 329DEG 3KT 2948 8217
ZIBURASpecial weather statement, Jun 24, 3:33 PM EDT, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 333 PM EDT FRI JUN 24 2011 FLZ033-038-242015- FLAGLER-ST. JOHNS- 333 PM EDT FRI JUN 24 2011 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHEASTERN ST. JOHNS AND NORTHWESTERN FLAGLER COUNTIES FOR STRONG WINDS VALID UNTIL 415 PM EDT... AT 334 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 7 MILES SOUTHWEST OF DUPONT CENTER...OR 9 MILES EAST OF HASTINGS...MOVING EAST AT 15 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND HASTINGS...DUPONT CENTER AND SAINT AUGUSTINE SHORES THROUGH 415 PM EDT. GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. LAT...LON 2958 8151 2971 8152 2984 8129 2962 8121 TIME...MOT...LOC 1934Z 252DEG 15KT 2968 8136 ZIBURA
Special weather statement, Jun 24, 3:37 PM EDT, 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 337 PM EDT FRI JUN 24 2011 FLZ033-242000- ST. JOHNS- 337 PM EDT FRI JUN 24 2011 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CENTRAL ST. JOHNS COUNTY FOR STRONG WINDS VALID UNTIL 400 PM EDT... AT 337 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED OVER ST. JOHNS COUNTY...OR 8 MILES SOUTHWEST OF GUANA RIVER STATE PARK...MOVING EAST AT 5 MPH. THIS STRONG THUNDERSTORM WILL IMPACT MAINLY RURAL AREAS OF THE INDICATED COUNTY THROUGH 400 PM EDT. GUSTY WINDS OF 35 TO 45 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. LAT...LON 3009 8134 2996 8131 2995 8145 3002 8146 TIME...MOT...LOC 1937Z 267DEG 4KT 3000 8141 ZIBURA
Local storm report, Jun 24, 3:41 PM EDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
341 PM EDT FRI JUN 24 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0335 PM TSTM WND GST 7 SW OCALA AIRPORT 29.10N 82.30W
06/24/2011 E50 MPH MARION FL PUBLIC
PUBLIC REPORT OF WINDS OF 40-50 MPH. PEA SIZE HAIL ALSO
OBSERVED.
&&
ARSThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 9:59 PM EDT | Special Weather Statement | JAX | Putnam | 31 min |
| Jun 24, 2:28 PM EDT | Special Weather Statement | JAX | Duval | 32 min |
| Jun 24, 2:56 PM EDT | Special Weather Statement | JAX | Nassau | 34 min |
| Jun 24, 3:09 PM EDT | Special Weather Statement | JAX | Marion | 51 min |
| Jun 24, 3:27 PM EDT | Special Weather Statement | JAX | Marion | 48 min |
| Jun 24, 3:33 PM EDT | Special Weather Statement | JAX | Saint Johns | 42 min |
| Jun 24, 3:37 PM EDT | Special Weather Statement | JAX | Saint Johns | 23 min |
| Jun 24, 3:59 PM EDT | Special Weather Statement | JAX | Marion | 46 min |
| Jun 24, 4:00 PM EDT | Severe Thunderstorm Warning | JAX | Saint Johns | 45 min |
| Jun 24, 4:12 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 33 min |
| Jun 24, 4:16 PM EDT | Special Weather Statement | JAX | Flagler | 29 min |
| Jun 24, 4:22 PM EDT | Special Weather Statement | JAX | Saint Johns | 38 min |
| Jun 24, 4:31 PM EDT | Areal Flood Advisory | JAX | Alachua, Marion, Putnam | 59 min |
| Jun 24, 4:35 PM EDT | Special Marine Warning | JAX | 115 min | |
| Jun 24, 4:38 PM EDT | Special Weather Statement | JAX | Saint Johns | 37 min |
| Jun 24, 4:43 PM EDT | Severe Thunderstorm Warning | JAX | Saint Johns | 17 min |
| Jun 24, 5:02 PM EDT | Areal Flood Advisory | JAX | Flagler, Saint Johns | 118 min |
| Jun 24, 5:07 PM EDT | Special Weather Statement | JAX | Clay | 23 min |
| Jun 24, 5:16 PM EDT | Severe Thunderstorm Warning | JAX | Bradford, Clay | 44 min |
| Jun 24, 5:23 PM EDT | Special Weather Statement | JAX | Flagler | 37 min |
| Jun 24, 5:28 PM EDT | Areal Flood Advisory | JAX | Flagler | 62 min |
| Jun 24, 5:37 PM EDT | Special Weather Statement | JAX | Putnam | 23 min |
| Jun 24, 5:58 PM EDT | Special Weather Statement | JAX | Clay | 32 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.