Alert archive / Florida / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 168, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 14, 2014, 4:40 PM EDT for Duval County, Florida. It was in force for 33 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
- Jul 14, 2014, 4:40 PM EDT (20:40 UTC)
- Expired
- Jul 14, 2014, 5:13 PM EDT
- In force
- 33 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
County Duval County, FL
The radar
The Jacksonville radar (KJAX), 17 km from the middle of the area, began a volume at 20:39 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, 8.7 hours before the alert went out and 235 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
- 537 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1060 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 8 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 Jul 14, 2:45 PM EDT, 1 hour 55 minutes earlier.
Area forecast discussion, Jul 14, 2:45 PM EDT, 1 hour 55 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 245 PM EDT MON JUL 14 2014 .SHORT TERM /THROUGH TONIGHT/... GULF COAST SEA BREEZE IS TAKING OFF AND RUSHING INLAND WITH A BAND OF NUMEROUS STORMS PUSHING PAST GAINESVILLE AND STARKE. MEANWHILE ON THE ATLANTIC SIDE...THE SBRZ GOT A LATE START BUT IS NOW NEARING I-95 IN NE FL. APPEARS THAT A COLLISION WILL OCCUR OVER CLAY AND PUTNAM COUNTIES BTWN 3 AND 4 PM. HI-RES MODELS SHOW HIGHEST CONCENTRATION OF STORMS OVER OUR EASTERN ZONES SOUTH OF JAX WITH ISOLATED CONVECTION ELSEWHERE. STORMS ARE MOVING A LITTLE FASTER TODAY...BUT AS THEY MERGE OVER THE NEXT COUPLE HOURS...WE WILL SEE MORE STORMS OVER THE SAME AREAS AND POSSIBLY LOCALIZED FLOODING. HEAVY RAINS...DEADLY LIGHTNING AND GUSTY WINDS ARE EXPECTED. SKIES WILL BEGIN TO CLEAR THIS EVENING...THEN RESIDUAL LOW LEVEL MOISTURE WILL ALLO LOW CLOUDS AND PATCHY GROUND FOG TO FORM AFTER MIDNIGHT. TEMPS ARE EXPECTED TO BE NEAR NORMAL. .LONG TERM... OVERALL LOOKING AT A WET MIDWEEK AS THE DEEP UPPER LEVEL LOW- SHORT WAVE TROUGH OVER THE GREAT LAKES STATES DIGS SOUTH AND DRAGS THE FRONTAL SYSTEM OVER THE LOCAL FORECAST AREA. SO FOR TUESDAY LOOKING LIKE SOME ENHANCED AFTERNOON CONVECTION OVER SOUTHEAST GEORGIA WITH A CONTINUING FLORIDA STORM MOVEMENT FROM THE NATURE COAST ACROSS NORTHERN FLORIDA. ON WEDNESDAY...THE FRONTAL SYSTEM TAKES ON AN WEST TO EAST ORIENTATION AND SLOWLY DROPS ACROSS THE FLORIDA-GEORGIA STATE LINE. WITH 50-60 PERCENT POPS ACROSS MUCH OF NORTH FLORIDA AND SOME DRYING OVER SOUTHERN GEORGIA. THURSDAY...THE FRONT DRAGS FURTHER SOUTH WITH MOST OF THE ACTION ACROSS OUR SOUTHERN FORECAST AREA AND VERY DRY AIR...FOR JULY...NORTH OF INTERSTATE 10. FRIDAY AND SATURDAY...THE DRY AIR DOES NOT LAST VERY LONG AS THE NEXT UPPER LEVEL SHORTWAVE-IMPULSE MOVES ACROSS THE UPPER GULF COAST OPENING UP THE NORTHERN GULF MOISTURE AND LEADING TO ENHANCED AFTERNOON AND EVENING POPS ON SATURDAY. SUNDAY AND MONDAY...LOW PRESSURE LOOKS LIKE IT WILL BE DEVELOPING OVER THE AREA WITH A GOOD CHANCE OF RAIN MOST OF THE DAY BOTH DAYS. && .AVIATION... PREVAILING VFR EXCEPT NEAR TSRA. HAVE VCTS AGAIN THIS AFTN AT THE TERMINALS. STORM CHANCES ARE MUCH LOWER AT SSI AND WILL NOT ADD A TEMPO FOR TSRA. CIGS WILL GENERALLY BE 3-5 KFT. && .MARINE... WINDS ARE SE OVER NEARSHORE WATERS IN RESPONSE TO A SEA BREEZE. OTHERWISE S TO SW WINDS PREVAIL. A LOW PRESSURE SYSTEM WILL DIVE INTO THE SERN STATES TONIGHT...THEN LIFT NE ON WEDNESDAY NIGHT. WHILE THE COLD FRONT ASSOCIATED WITH THIS LOW IS NOT EXPECTED TO MOVE ACROSS AREA WATERS...THE INCREASED PRESSURE GRADIENT WILL LEAD TO SOMEWHAT ELEVATED WINDS AND SEAS. RIP CURRENTS: LOW RISK THROUGH MID WEEK. && .PRELIMINARY POINT TEMPS/POPS... AMG 73 93 71 93 / 20 70 70 40 SSI 75 91 76 89 / 20 50 50 50 JAX 74 93 74 91 / 30 60 60 60 SGJ 75 90 75 89 / 30 60 60 70 GNV 72 92 73 91 / 30 60 60 60 OCF 72 92 73 89 / 30 50 50 60 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && TRABERT/SANDRIK
Hazardous weather outlook, Jul 14, 3:30 AM EDT, 13 hours 10 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 330 AM EDT MON JUL 14 2014 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-150900- ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT 20 NM- FERNANDINA BEACH TO ST AUGUSTINE FL OUT 20 NM- ST AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM- ALTAMAHA SOUND GA TO FERNANDINA BEACH FL 20 NM TO 60 NM OFFSHORE- FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM TO 60 NM OFFSHORE- ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO 60 NM OFFSHORE-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- 330 AM EDT MON JUL 14 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... SCATTERED AFTERNOON AND EVENING THUNDERSTORMS. A FEW STRONG STORMS WILL BE POSSIBLE WITH GUSTY WINDS AND HEAVY RAIN. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... THUNDERSTORMS ARE LIKELY TUESDAY AND WEDNESDAY. A FEW STRONG TO SEVERE STORMS WITH GUSTY WINDS AND HAIL WILL BE POSSIBLE. MAINLY AFTERNOON AND EVENING SCATTERED THUNDERSTORMS ARE EXPECTED FOR THURSDAY THROUGH SUNDAY. .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.
In the hours before
Special weather statement, Jul 14, 3:36 PM EDT, 1 hour 4 minutes before
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</html>Special weather statement, Jul 14, 3:39 PM EDT, 1 hour 1 minute before
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</html>Special weather statement, Jul 14, 4:07 PM EDT, 33 minutes before
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</html>Special weather statement, Jul 14, 4:10 PM EDT, 30 minutes before
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</html>Special weather statement, Jul 14, 4:19 PM EDT, 21 minutes before
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</html>Special weather statement, Jul 14, 4:27 PM EDT, 13 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 |
|---|---|---|---|---|
| Jul 14, 11:37 AM EDT | Special Weather Statement | JAX | Gilchrist | 53 min |
| Jul 14, 12:41 PM EDT | Special Weather Statement | JAX | Gilchrist | 49 min |
| Jul 14, 1:18 PM EDT | Special Weather Statement | JAX | Alachua | 42 min |
| Jul 14, 2:49 PM EDT | Special Weather Statement | JAX | Clay | 41 min |
| Jul 14, 3:09 PM EDT | Severe Thunderstorm Warning | JAX | Clay, Duval | 51 min |
| Jul 14, 3:28 PM EDT | Special Weather Statement | JAX | Marion | 47 min |
| Jul 14, 3:36 PM EDT | Special Weather Statement | JAX | Duval | 39 min |
| Jul 14, 3:39 PM EDT | Special Weather Statement | JAX | Saint Johns | 36 min |
| Jul 14, 4:02 PM EDT | Special Marine Warning | JAX | 88 min | |
| Jul 14, 4:07 PM EDT | Special Weather Statement | JAX | Saint Johns | 38 min |
| Jul 14, 4:10 PM EDT | Special Weather Statement | JAX | Saint Johns | 50 min |
| Jul 14, 4:19 PM EDT | Special Weather Statement | JAX | Marion | 41 min |
| Jul 14, 4:27 PM EDT | Special Weather Statement | JAX | Duval | 48 min |
| Jul 14, 4:50 PM EDT | Special Weather Statement | JAX | Flagler | 40 min |
| Jul 14, 5:27 PM EDT | Special Marine Warning | JAX | 93 min | |
| Jul 14, 5:34 PM EDT | Special Weather Statement | JAX | Flagler | 41 min |
| Jul 14, 5:37 PM EDT | Areal Flood Advisory | JAX | Flagler | 83 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2014Every severe thunderstorm warning in 2014
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.