Alert archive / Florida / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 271, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 30, 2008, 1:43 PM EDT for Bradford County, Union 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
- Jun 30, 2008, 1:43 PM EDT (17:43 UTC)
- Expired
- Jun 30, 2008, 2:30 PM EDT
- In force
- 47 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
Counties Bradford County, FL, Union County, FL
The radar
The Jacksonville radar (KJAX), 77 km from the middle of the area, began a volume at 17:45 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 30, 11:07 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 5.7 hours before the alert went out and 242 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
- 171 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1226 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 60 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 30, 9:20 AM EDT, 4 hours 23 minutes earlier.
Area forecast discussion, Jun 30, 9:20 AM EDT, 4 hours 23 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 920 AM EDT MON JUN 30 2008 ...SLIGHT RISK OF SEVERE WEATHER ACROSS THE REGION TODAY... .UPDATE...LARGE UPPER TROUGH FROM GREAT LAKES TO THE NORTHERN GULF AMPLIFYING AS SHORT WAVE ENERGY ROUNDS BASE OF TROUGH. COLD FRONT STRETCHES FROM NORTH GA INTO CENTRAL ALABAMA PROGGED TO MOVE SE ACROSS CENTRAL GA THIS AFTERNOON AS UPPER TROUGH AMPLIFIES. SHORT WAVE MOVING THROUGH ALABAMA PRODUCING LARGE CLUSTER OF STORMS ACROSS SE ALABAMA AND SW GA WHICH WILL MOVE RAPIDLY EAST TOWARDS OUR WESTERN AREA BY AROUND NOON AND THE REMAINDER OF THE AREA THIS AFTERNOON. MODIFIED JAX SOUNDING SHOWING SFC BASED CAPE OF 3500J (USING TEMP OF 89)...LI OF -7..AND K INDEX 33. AS FRONT PUSHES SE TOWARDS AREA THIS AFTERNOON THERE WILL BE A MOIST AND VERY UNSTABLE AIRMASS IN PLACE AND IN COMBINATION WITH 35 KNOT WINDS AT THE MID LEVELS SHOULD SEE ANOTHER ROUND OF STRONG TO POSSIBLY SEVERE STORMS THIS AFTERNOON. MAIN CONCERNS WILL BE STRONG AND POSSIBLY DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING...AND HAIL. SPC HAS OUR AREA UNDER A SLIGHT RISK OF SEVERE WX THIS AFTERNOON. FORECAST ON TRACK WITH LIKELY POPS AND SEVERE WX ALREADY ADDRESSED IN HWO. && .AVIATION...THE MAIN CHALLENGE WILL BE ON EXACT TIMING AND INTENSITY OF THE STORMS AT THE TERMINALS THIS AFTERNOON. WITH COLD FRONT PUSHING SE TOWARDS THE AREA AND VERY UNSTABLE ATMOSPHERE IN PLACE...THE POTENTIAL EXISTS FOR STRONG STORMS PRODUCING STRONG WIND GUSTS AND HEAVY RAIN. WILL KEEP THE TEMPO GROUPS FOR IFR VSBY AND WIND GUSTS BETWEEN 16Z-20Z FOR NOW DUE TO THE FAST MOVEMENT OF STORMS BUT THIS TIMING MAY NEED TO BE ADJUSTED. THEREAFTER...SHRA SHOULD CONTINUE BUT THERE WILL BE LESS CHANCES OF IFR CONDITIONS ACROSS THE TERMINALS. && .MARINE...WILL KEEP THE EXERCISE CAUTION GOING FOR THE OFFSHORE WATERS FOR A FEW MORE HOURS AS GRAYS REEF IS STILL SHOWING SUSTAINED WINDS OF 15 TO 20 KNOTS. WINDS WILL DECREASE SOME THIS AFTERNOON BUT FOCUS WILL SHIFT TOWARDS SCATTERED STORMS MOVING OFFSHORE THIS AFTERNOON. SOME STORMS WILL BE STRONG PRODUCING STRONG WIND GUSTS AND CLOUD TO WATER LIGHTNING. && .PRELIMINARY POINT TEMPS/POPS... AMG 88 67 90 64 / 60 30 20 10 SSI 88 72 88 73 / 60 40 30 20 JAX 89 69 90 69 / 60 40 30 20 SGJ 89 71 86 72 / 60 40 30 20 GNV 89 70 88 70 / 60 40 40 20 OCF 89 70 88 69 / 60 40 30 20 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && PP/RK
Hazardous weather outlook, Jun 30, 11:24 AM EDT, 2 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 1124 AM EDT MON JUN 30 2008 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-011000- ALACHUA-APPLING-ATKINSON-BACON-BAKER-BRADFORD-BRANTLEY- CAMDEN (COASTAL)-CAMDEN (INLAND)-CHARLTON-CLAY-CLINCH-COFFEE- COLUMBIA-DUVAL-ECHOLS-FLAGLER-GILCHRIST-GLYNN (COASTAL)- GLYNN (INLAND)-HAMILTON-JEFF DAVIS-MARION-NASSAU-PIERCE-PUTNAM- ST JOHNS-SUWANNEE-UNION-WARE-WAYNE- 1124 AM EDT MON JUN 30 2008 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...THIS AFTERNOON AND TONIGHT... ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 5 PM EDT FOR NORTHEAST FLORIDA AND EXTREME SOUTHEAST GEORGIA... AN UPPER LEVEL TROUGH COMBINED WITH A MOIST UNSTABLE AIRMASS WILL PRODUCE NUMEROUS THUNDERSTORMS ACROSS THE AREA THIS AFTERNOON. DAMAGING WINDS...AND HAIL WILL BE POSSIBLE ALONG WITH FREQUENT LIGHTNING STRIKES. THE STORMS WILL MOVE FROM WEST TO EAST AT AROUND 25 MPH...REACHING THE EAST COAST BY MID-AFTERNOON. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... THUNDERSTORMS ARE ANTICIPATED EACH DAY...MAINLY ACROSS NORTHEAST FLORIDA TUESDAY AND WEDNESDAY...WITH A MORE UNIFORM COVERAGE EXPECTED THURSDAY THROUGH SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED IN THE JACKSONVILLE FORECAST AREA THIS AFTERNOON. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. ECZ/MZ
In the hours before
Local storm report, Jun 30, 10:32 AM EDT, 3 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1032 AM EDT MON JUN 30 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM TSTM WND DMG 3 SW FRUIT COVE 30.07N 81.65W
06/29/2008 ST. JOHNS FL LAW ENFORCEMENT
THE LAW ENFORCEMENT REPORTED POWERLINES BLOWN DOWN NEAR
STATE ROAD 13 IN SWITZERLAND AND ALSO NEAR RACE TRACK
ROAD IN FRUITCOVE. THE TIME GIVEN WAS BASED ON RADAR.
&&
PPSpecial weather statement, Jun 30, 11:20 AM EDT, 2 hours 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 1120 AM EDT MON JUN 30 2008 FLZ021-301600- SUWANNEE- 1120 AM EDT MON JUN 30 2008 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR CENTRAL SUWANNEE COUNTY FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL NOON EDT... AT 1120 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 9 MILES WEST OF MCALPIN...OR 7 MILES NORTHEAST OF MAYO...MOVING EAST AT 31 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND MCALPIN...HOUSTON AND WELLBORN THROUGH NOON EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 40 TO 50 MPH CAN BE EXPECTED. RADAR INDICATES SOME ROTATION WITHIN THIS STORM. FUNNEL CLOUDS ARE POSSIBLE. THE AREA IS UNDER A SEVERE THUNDERSTORM WATCH. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. WOLF
Special weather statement, Jun 30, 11:45 AM EDT, 1 hour 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 1145 AM EDT MON JUN 30 2008 FLZ020-GAZ150-162>164-301630- CHARLTON-CLINCH-ECHOLS-HAMILTON-WARE- 1145 AM EDT MON JUN 30 2008 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR NORTHWESTERN HAMILTON...NORTHWESTERN CHARLTON...CENTRAL CLINCH...CENTRAL WARE AND ECHOLS COUNTIES FOR STRONG WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 1230 PM EDT... AT 1145 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED 10 MILES EAST OF MAYDAY...OR 13 MILES NORTHEAST OF STATENVILLE...MOVING EAST AT 25 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND MAYDAY AND DU PONT THROUGH 1230 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. THE AREA REMAINS UNDER A SEVERE THUNDERSTORM WATCH. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. PETERSON
Special weather statement, Jun 30, 12:28 PM EDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 1228 PM EDT MON JUN 30 2008 FLZ020>024-GAZ150>152-162>165-301715- BAKER-BRANTLEY-CHARLTON-CLINCH-COLUMBIA-ECHOLS-HAMILTON-INLAND CAMDEN-NASSAU-PIERCE-SUWANNEE-WARE- 1228 PM EDT MON JUN 30 2008 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR SUWANNEE... NORTHWESTERN BAKER...NORTHERN COLUMBIA...HAMILTON...CHARLTON... CLINCH...WESTERN BRANTLEY...WARE...SOUTHERN PIERCE...ECHOLS... NORTHWESTERN NASSAU AND WESTERN CAMDEN COUNTIES FOR STRONG WINDS... SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 115 PM EDT... AT 1228 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED 7 MILES EAST OF FARGO...MOVING EAST AT 35 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND FARGO...STEVEN FOSTER STATE PARK...ST. GEORGE...HOMELAND... FOLKSTON...KINGS FERRY AND HILLIARD THROUGH 115 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. THE AREA REMAINS UNDER A SEVERE THUNDERSTORM WATCH. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. PETERSON
Special weather statement, Jun 30, 1:07 PM EDT, 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 107 PM EDT MON JUN 30 2008 FLZ021-022-301745- COLUMBIA-SUWANNEE- 107 PM EDT MON JUN 30 2008 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR SOUTHEASTERN SUWANNEE AND CENTRAL COLUMBIA COUNTIES FOR STRONG WINDS VALID UNTIL 145 PM EDT... AT 107 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 11 MILES NORTHEAST OF SUWANNEE VALLEY TO 3 MILES WEST OF LAKE CITY TO 6 MILES NORTHEAST OF OBRIEN...MOVING EAST AT 34 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND WINFIELD...SUWANNEE VALLEY...OBRIEN... HILDRETH...LAKE CITY...FIVE POINTS...ICHETUCKNEE SPRINGS STATE PARK...WATERTOWN AND COLUMBIA THROUGH 145 PM EDT. GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE. THE AREA REMAINS UNDER A SEVERE THUNDERSTORM WATCH. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. WOLF
Special weather statement, Jun 30, 1:33 PM EDT, 10 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 30, 12:45 PM EDT | Severe Thunderstorm Warning | JAX | Nassau | 60 min |
| Jun 30, 1:14 PM EDT | Severe Thunderstorm Warning | JAX | Baker, Duval, Nassau | 46 min |
| Jun 30, 1:16 PM EDT | Special Marine Warning | JAX | 119 min | |
| Jun 30, 2:37 PM EDT | Severe Thunderstorm Warning | JAX | Flagler, Putnam | 38 min |
| Jun 30, 3:00 PM EDT | Severe Thunderstorm Warning | JAX | Flagler, Saint Johns | 15 min |
| Jun 30, 3:14 PM EDT | Severe Thunderstorm Warning | JAX | Flagler, Saint Johns | 25 min |
| Jun 30, 3:15 PM EDT | Special Marine Warning | JAX | 2 hr | |
| Jun 30, 3:16 PM EDT | Special Marine Warning | JAX | 29 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2008Every severe thunderstorm warning in 2008
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.