Alert archive / Florida / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 128, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 12, 2007, 1:40 PM EDT for Flagler County, Florida. It was in force for 30 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 12, 2007, 1:40 PM EDT (17:40 UTC)
- Expired
- Jul 12, 2007, 2:10 PM EDT
- In force
- 30 min
- Issued by
- NWS Jacksonville, FL
- Area
- Counties, with a storm outline in the text
County Flagler County, FL
The radar
The Jacksonville radar (KJAX), 119 km from the middle of the area, began a volume at 17:43 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, 5.7 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.
- Mixed-layer CAPE
- 2718 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
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 12, 8:57 AM EDT, 4 hours 43 minutes earlier.
Area forecast discussion, Jul 12, 8:57 AM EDT, 4 hours 43 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 857 AM EDT THU JUL 12 2007 .UPDATE... SOMEWHAT DRIER AIR HAS SLIPPED SOUTHWARD INTO SERN GA AND HAS DECREASED PWATS INTO THE 1.5 TO 1.75 INCH RANGE AND SHOULD LIMIT TSTM COVERAGE TO 20-30% THERE WHILE ACRS NERN FL PWATS STILL ARND 2 INCHES AND WITH WEAK SHORTWAVE IMPULSES RIDING WEST OUT OF THE NERN GOMEX ACRS NERN FL TODAY SHOULD STILL SEE AT LEAST 30-50% COVERAGE OF TSTMS BY THE AFTERNOON HOURS. LATEST RADAR TRENDS SHOWING SOME TRAINING OF ECHOES POSSIBLE AND SOME POOR DRAINAGE FLOODING MAY BE POSSIBLE ACRS INLD AREAS OF NERN FL ALONG THE I-75 CORRIDOR. MAX TEMPS IN THE MID 90S NORTH OF I-10 AND LOWER 90S SOUTH OF I-10 WHERE MORE CLOUD COVER AND PCPN IS EXPECTED. MAIN TSTM THREAT WILL CONTINUE TO BE ISOLD STRONG WINDS WITH PULSE STORMS ACRS NERN FL. && .AVIATION... VFR CONDS WITH THE BEST CHANCE OF IFR/MVFR CIGS/VSBYS FROM TSTM ACTIVITY AT KGNV BY THE LATE MORNING HOURS. && .MARINE... NO HEADLINES AS W/SWLY WINDS 10-15KNOTS AND 2-4FT SEAS WILL BECOME S/SWLY THIS AFTERNOON AT THE SAME SPEEDS. && .PRELIMINARY POINT TEMPS/POPS... AMG 95 71 96 73 / 20 10 40 30 SSI 90 77 90 78 / 40 10 30 30 JAX 94 74 93 74 / 40 10 40 30 SGJ 91 75 90 76 / 50 20 40 30 GNV 92 72 93 73 / 50 20 50 20 OCF 93 72 92 73 / 50 20 50 20 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && HESS/KEEGAN/BARRON
Hazardous weather outlook, Jul 12, 5:44 AM EDT, 7 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 544 AM EDT THU JUL 12 2007 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-131000- 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- 544 AM EDT THU JUL 12 2007 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...TODAY AND TONIGHT... ..ISOLATED STRONG TO SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EVENING... AN UPPER LEVEL DISTURBANCE IS MOVING OVER THE AREA TODAY AND WILL PRODUCE SCATTERED THUNDERSTORMS...BEGINNING EARLY IN THE MORNING ACROSS THE SUWANNEE VALLEY OF NORTHEAST FLORIDA. THUNDERSTORMS WILL MOVE TO THE EAST THIS MORNING THEN BEGIN TO MOVE TO THE SOUTHEAST DURING THE AFTERNOON. THE STRONGEST THUNDERSTORMS WILL BE CAPABLE OF PRODUCING HAIL...STRONG WINDS...HEAVY RAINFALL...AND FREQUENT CLOUD-TO- GROUND LIGHTNING STRIKES. ISOLATED STRONG TO SEVERE THUNDERSTORMS WITH DAMAGING WINDS WILL BE POSSIBLE OVER INTERIOR SECTIONS MAINLY SOUTH IF I-10 THIS AFTERNOON DUE TO THE WEST AND EAST COAST SEA BREEZE COLLISION. THE COMBINATION OF HEAT AND HUMIDITY WILL RESULT IN AFTERNOON HEAT INDEX VALUES OF 100 TO 106. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED THROUGH THE WEEKEND. THE STRONGEST THUNDERSTORMS WILL BE CAPABLE OF PRODUCING HAIL...STRONG WINDS...HEAVY RAINFALL...AND FREQUENT CLOUD-TO-GROUND LIGHTNING STRIKES. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED FOR THEIR AREA. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. MKT
In the hours before
Special weather statement, Jul 12, 12:52 PM EDT, 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 1252 PM EDT THU JUL 12 2007 FLZ022-023-030-031-121745- BAKER-BRADFORD-COLUMBIA-UNION- 1252 PM EDT THU JUL 12 2007 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR BRADFORD... UNION...BAKER AND COLUMBIA COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 145 PM EDT... AT 1252 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 19 MILES SOUTHWEST OF TAYLOR TO 6 MILES SOUTHWEST OF SANDERSON TO RAIFORD...MOVING NORTHEAST AT 10 TO 15 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND RAIFORD...ELLERBEE... SANDERSON...GLEN SAINT MARY...TAYLOR AND MACCLENNY THROUGH 145 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR 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. ZAPPE
Special weather statement, Jul 12, 12:54 PM EDT, 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 1254 PM EDT THU JUL 12 2007 FLZ037-038-121800- FLAGLER-PUTNAM- 1254 PM EDT THU JUL 12 2007 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR SOUTHERN PUTNAM AND FLAGLER COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 200 PM EDT... AT 1254 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 3 MILES NORTHWEST OF POMONA PARK TO 4 MILES SOUTH OF CRESCENT CITY...MOVING EAST AT 10 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND WELAKA...POMONA PARK...LAKE COMO...CRESCENT CITY... ANDALUSIA...ESPANOLA AND BUNNELL THROUGH 200 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR 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. ZAPPE
Special weather statement, Jul 12, 1:08 PM EDT, 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 108 PM EDT THU JUL 12 2007 FLZ025-032-033-121800- CLAY-DUVAL-ST. JOHNS- 108 PM EDT THU JUL 12 2007 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR CLAY...ST. JOHNS AND DUVAL COUNTIES FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 200 PM EDT... AT 108 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED 2 MILES WEST OF BELLAIR...OR 4 MILES NORTH OF LAKESIDE...MOVING EAST AT 10 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND LAKESIDE...JACKSONVILLE HEIGHTS...DOCTORS INLET...BELLAIR...ORTEGA...ORANGE PARK...SWITZERLAND...MANDARIN... FRUIT COVE AND UNF THROUGH 200 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR 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. HESS
Special weather statement, Jul 12, 1:10 PM EDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 110 PM EDT THU JUL 12 2007 FLZ024-121730- NASSAU- 110 PM EDT THU JUL 12 2007 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR EASTERN NASSAU COUNTY FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 130 PM EDT... AT 110 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 5 MILES SOUTHWEST OF AMELIA CITY TO 7 MILES NORTHEAST OF AMELIA CITY...MOVING EAST AT 10 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND AMELIA CITY THROUGH 130 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR 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. ZAPPE
Local storm report, Jul 12, 1:20 PM EDT, 20 minutes before
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</html>Local storm report, Jul 12, 1:27 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 11, 8:44 PM EDT | Special Marine Warning | JAX | 61 min | |
| Jul 11, 9:45 PM EDT | Special Marine Warning | JAX | 35 min | |
| Jul 12, 12:08 PM EDT | Special Marine Warning | JAX | 2 hr | |
| Jul 12, 12:58 PM EDT | Special Marine Warning | JAX | 2 hr | |
| Jul 12, 1:06 PM EDT | Severe Thunderstorm Warning | JAX | Flagler | 54 min |
| Jul 12, 1:52 PM EDT | Special Marine Warning | JAX | 113 min | |
| Jul 12, 3:18 PM EDT | Special Marine Warning | JAX | 57 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2007Every severe thunderstorm warning in 2007
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.