Alert archive / Florida / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 119, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 30, 2007, 12:43 PM CDT for Gulf County, Liberty County, Florida. It was in force for 47 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 30, 2007, 12:43 PM CDT (17:43 UTC)
- Expired
- Jul 30, 2007, 1:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Tallahassee, FL
- Area
- Counties, with a storm outline in the text
Counties Gulf County, FL, Liberty County, FL
The radar
The Tallahassee radar (KTLH), 80 km from the middle of the area, began a volume at 17:47 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, 5.7 hours before the alert went out and 327 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
- 1516 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 65 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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 30, 8:45 AM CDT, 3 hours 58 minutes earlier.
Area forecast discussion, Jul 30, 8:45 AM CDT, 3 hours 58 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TALLAHASSEE FL 945 AM EDT MON JUL 30 2007 .DISCUSSION...11 UTC SURFACE ANALYSIS SHOWS A QUASI-STATIONARY FRONT ACROSS THE MID SOUTH FROM NEAR LITTLE ROCK OVER TO BIRMINGHAM AND EAST-NORTHEASTWARD TO COLUMBIA AND THROUGH THE OUTER BANKS. A 1010 MB SURFACE LOW WAS ALSO NOTED NEAR PEACHTREE CITY. AREAS OF 1018 MB HIGH PRESSURE WERE ANALYZED ACROSS THE GREAT LAKES. VAPOR IMAGERY THIS MORNING IS SHOWING A SHORTWAVE MOVING THROUGH CENTRAL KENTUCKY HEADING SOUTHEAST. 12 UTC UPPER AIR LAUNCH SHOWS QUITE A MOIST ATMOSPHERE WITH A PWAT OF 2.22 INCHES. LAPSE RATES ABOVE 800 MB ARE RATHER UNIMPRESSIVE AND GENERALLY 6DEG C/KM UP TO THE TROPOPAUSE. MODIFYING A SURFACE PARCEL TO 92/69 ONLY YIELDS 1800 J/KG OF SBCAPE WITH AN LI OF -5...AND THIS MAY BE GENEROUS. STORMS SHOULD BE MORE OF THE PULSE VARIETY TODAY AND ONLY OFFER A POTENTIAL OF SMALL HAIL (DUE TO SKINNY CAPE IN THE HAIL GROWTH ZONE)...ISOLATED WET MICROBURSTS AND VERY HEAVY RAIN. WEST TO NORTHWEST FLOW IN THE 1000-700MB LAYER WILL FAVOR PINNING OF THE SEA BREEZE FRONTS NEARER TO THE COAST. THE 30/06Z WORKSTATION WRF ALSO FAVORS AN EARLIER INITIATION TIME OF AROUND 17Z TODAY OVER THE LANDMASS. WITH EXPECTED BOUNDARY COLLISIONS AND THE PROXIMITY OF THE SURFACE FRONT WE SHOULD SEE CONVECTION DEVELOP AND SPREAD THROUGHOUT THE REST OF THE CWA. CURRENT POP FORECAST LOOKS PRETTY GOOD WITH THE NE TO SW GRADIENT. GIVEN THAT THE GUIDANCE REMAINS IN THE 60 TO 70 PERCENT RANGE...IM NOT WILLING TO GO HIGHER (OR LOWER) THAN WHAT IS SHOWN CURRENTLY ANYWAY. WILL MAKE SOME MINOR TWEAKS TO OTHER FORECAST PARAMETERS. UPDATED PRODUCTS OUT SHORTLY. HAVE A GREAT DAY && .AVIATION...VFR WILL PREVAIL. HOWEVER...EXPECT MVFR-IFR VSBYS AND MVFR CIGS IN SCATTERED TO NUMEROUS CONVECTION DURING THE AFTERNOON AND EARLY EVENING. && .MARINE... WINDS AND SEAS WILL REMAIN LOW...EXCEPT IN VICINITY OF THUNDERSTORMS THROUGH THE PERIOD. && .FIRE WEATHER... WITH HIGH PRECIPITABLE WATER VALUES AND EXPECTED CONVECTION TODAY...RELATIVE HUMIDITY VALUES SHOULD REMAIN WELL ABOVE CRITICAL LEVELS. && .TAE WATCHES/WARNINGS/ADVISORIES... AL...NONE. GA...NONE. FL...NONE. GM...NONE. && AVIATION...BARRY REST OF DISCUSSION...GODSEY
Hazardous weather outlook, Jul 30, 3:41 AM CDT, 9 hours 2 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TALLAHASSEE FL 441 AM EDT MON JUL 30 2007 ALZ065>069-FLZ007>019-026>029-034-GAZ120>131-142>148-155>161- GMZ730-750-755-765-770-775-310845- COFFEE-DALE-HENRY-GENEVA-HOUSTON-INLAND WALTON-COASTAL WALTON- HOLMES-WASHINGTON-JACKSON-BAY-CALHOUN-GULF-FRANKLIN-GADSDEN-LEON- JEFFERSON-MADISON-LIBERTY-WAKULLA-TAYLOR-LAFAYETTE-DIXIE-QUITMAN- CLAY-RANDOLPH-TERRELL-DOUGHERTY-LEE-WORTH-TURNER-TIFT-BEN HILL- IRWIN-EARLY-MILLER-BAKER-MITCHELL-COLQUITT-COOK-BERRIEN-SEMINOLE- DECATUR-GRADY-THOMAS-BROOKS-LOWNDES-LANIER- APALACHEE BAY OR COASTAL WATERS FROM KEATON BEACH TO OCHLOCKONEE RIVER FL OUT TO 20 NM- COASTAL WATERS FROM APALACHICOLA TO DESTIN FL OUT 20 NM- COASTAL WATERS FROM OCHLOCKONEE RIVER TO APALACHICOLA FL OUT TO 20 NM- COASTAL WATERS FROM SUWANNEE RIVER TO KEATON BEACH OUT 20 NM- WATERS FROM APALACHICOLA TO DESTIN FL FROM 20 TO 60 NM- WATERS FROM SUWANNEE RIVER TO APALACHICOLA FL FROM 20 TO 60 NM- 441 AM EDT MON JUL 30 2007 /341 AM CDT MON JUL 30 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ALABAMA... SOUTHWEST AND SOUTH CENTRAL GEORGIA...AND THE FLORIDA BIG BEND AND PANHANDLE...AND ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP TODAY...ESPECIALLY THIS AFTERNOON AND EVENING. CONDITIONS ARE NOT FAVORABLE FOR WIDESPREAD SEVERE WEATHER...BUT A FEW STORMS COULD BRIEFLY PRODUCE STRONG WIND GUSTS AND VERY HEAVY RAIN. OF COURSE ALL THUNDERSTORMS POSE A THREAT TO LIFE AND PROPERTY BECAUSE OF LIGHTNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH MID WEEK...BUT CONDITIONS DO NOT APPEAR FAVORABLE FOR WIDESPREAD SEVERE WEATHER. RAIN CHANCES WILL DECREASE BY NEXT WEEKEND AS A HIGH PRESSURE RIDGE BUILDS OVER THE SOUTHEAST. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE WEBSITE ON THE INTERNET AT WEATHER.GOV...THEN CLICK ON YOUR AREA OF INTEREST ON THE NATIONAL MAP. FOURNIER
In the hours before
Special weather statement, Jul 30, 12:17 PM CDT, 26 minutes before
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</html>Special weather statement, Jul 30, 12:34 PM CDT, 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 134 PM EDT MON JUL 30 2007 FLZ026-301815- LIBERTY- 134 PM EDT MON JUL 30 2007 ...A SIGNIFICANT WEATHER ALERT IS IN EFFECT FOR LIBERTY COUNTY... * UNTIL 215 PM EDT AT 130 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 9 MILES EAST OF BLOUNTSTOWN...MOVING SOUTHEAST AT 10 MPH. WINDS AROUND 40 MPH ARE EXPECTED WITH THIS STORM. ALSO...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3. OR...YOU MAY CONTACT THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. 12-WATSON
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 12:54 PM CDT | Special Marine Warning | TAE | 75 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.