Alert archive / Georgia / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 236, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Sep 17, 2004, 3:23 AM EDT for Echols County, Georgia. It was in force for 37 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
- Sep 17, 2004, 3:23 AM EDT (07:23 UTC)
- Expired
- Sep 17, 2004, 4:00 AM EDT
- In force
- 37 min
- Issued by
- NWS Jacksonville, FL
- Area
- Counties, with a storm outline in the text
County Echols County, GA
The nearest sounding before it
Jacksonville, FL (KJAX), launched 00:00Z, 7.4 hours before the alert went out and 117 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
- 2714 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 741 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 6.9
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 Sep 16, 9:04 PM EDT, 6 hours 19 minutes earlier.
Area forecast discussion, Sep 16, 9:04 PM EDT, 6 hours 19 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 904 PM EDT THU SEP 16 2004 .SHORT TERM...CONVERGENCE ZONE OVER THE FLORIDA PENINSULA SET OFF A FEW SHOWERS/TSTMS THAT MOVED ALONG THE I-95 CORRIDOR WITH SOME GUSTY WINDS THAT ARE MIXING DOWN FROM THE STRONGER WINDS ALOFT. WE ARE STILL WATCHING A VERY PERSISTENT BAND OF SHOWERS AND EMBEDDED TSTMS EXTENDING FM MACON TO TALLAHASSEE THAT HAS FINALLY STARTED TO MAKE A MOVE TO THE EAST OVER THE PAST FEW HOURS...WE COULD SEE STRONG GUSTY WINDS AND AN ISOLATED TORNADO STILL NOT OUT OF THE QUESTION THROUGH MIDNIGHT AS THIS BAND MOVES INTO INLD SE GA AND THE SUWANNEE RIVER VALLEY IN NE FL. AFTER MIDNIGHT THE BAND SHOULD WEAKEN AS IT PUSHES ACROSS THE REMAINDER OF THE CWA...POPS ON THE PAST ZFP RANGING FROM 30-50% SHOULD STILL WORK FOR TONIGHT...WILL ADD A MENTION OF GUSTY WINDS WITH STORMS OVERNIGHT. MIN TEMPS WILL HOLD IN THE MID/UPPER 70S AGAIN OVERNIGHT WITH ATMOSPHERE REMAINING COUPLED. FOR FRIDAY...SCATTERED SHOWERS AND TSTMS SHOULD CONTINUE UNTIL DRIER AIR WRAPPING AROUND THE SOUTHERN SIDE OF IVAN PUSHES INTO THE CWA FRIDAY NIGHT. MAX TEMPS REACHING THE UPPER 80S ARND 90 IN SWLY FLOW...GUSTY WINDS IN SHOWER ACTIVITY WILL CONTINUE. && .MARINE...00Z BUOY REPORTS AT 41008/41012 AND SABSOON TOWER NETWORK ARE SUPPORTING SMALL CRAFT CONDITIONS WITH S/SELY WINDS AT 20 KNOTS WITH GUSTS TO 30 KNOTS IN SHOWER ACTIVITY...WITH SEAS RUNNING 5 TO 6 FEET. 18Z MODEL SUITE SUPPORTS THIS AND WILL KEEP HEADLINES UP INTO FRIDAY...WINDS WILL VEER SLOWLY TO THE SOUTH BY MORNING AND SWLY DURING THE DAY ON FRIDAY WITH MAYBE A SUDDLE 3-5 DECREASE IN WIND SPEED ON FRIDAY...SEAS WILL FALL SLOWLY AS WELL WITH FLOW BECOMING MORE OFFSHORE. && .PRELIMINARY POINT TEMPS/POPS... AMG 74 87 68 89 / 50 40 20 10 SSI 77 87 73 87 / 50 40 20 10 JAX 75 90 71 91 / 50 40 20 10 SGJ 77 88 74 88 / 40 40 30 10 GNV 74 88 70 89 / 40 40 20 10 OCF 74 88 70 89 / 40 40 20 10 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...SCA FERNANDINA BEACH TO FLAGLER BEACH OUT TO 60 NM. GA...SCA ATLAMAHA SOUND TO FERNANDINA BEACH OUT TO 60 NM. && HESS/CARROLL
Hazardous weather outlook, Sep 16, 3:26 PM EDT, 11 hours 57 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 326 PM EDT THU SEP 16 2004 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-171000- ALACHUA-APPLING-ATKINSON-BACON-BAKER-BRADFORD-BRANTLEY-CHARLTON-CLAY- CLINCH-COASTAL CAMDEN-COASTAL GLYNN-COFFEE-COLUMBIA-DUVAL-ECHOLS- FLAGLER-GILCHRIST-HAMILTON-INLAND CAMDEN-INLAND GLYNN-JEFF DAVIS- MARION-NASSAU-PIERCE-PUTNAM-ST. JOHNS-SUWANNEE-UNION-WARE-WAYNE- 326 PM EDT THU SEP 16 2004 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...THIS AFTERNOON AND TONIGHT... ...TORNADO WATCH IS CANCELED... ...SEVERAL RIVERS REMAIN ABOVE FLOOD STAGE... ...HIGH RISK OF RIP CURRENTS AT AREA BEACHES... SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE AREA THIS AFTERNOON AS NARROW OUTER RAINBANDS FROM IVAN APPROACH FROM THE WEST. ISOLATED SEVERE STORMS ARE POSSIBLE...ESPECIALLY WEST OF U.S. HIGHWAY 301. BREEZY CONDITIONS CAN BE EXPECTED OVER MAINLY WESTERN SECTIONS OF THE AREA THIS AFTERNOON. WIND GUSTS OF 20 TO 25 MPH WILL OCCUR THROUGH THE EARLY EVENING TONIGHT. SOME AREA RIVERS REMAIN IN FLOOD. SEE THE LATEST RIVER FLOOD WARNINGS AND STATEMENTS FOR MORE INFORMATION. AN INCREASING ONSHORE FLOW AND BUILDING SEAS WILL LEAD TO A HIGH RISK OF RIP CURRENTS AT AREA BEACHES TODAY. PLEASE REFER TO THE SURF ZONE FORECAST FOR MORE INFORMATION. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... ...AREA RIVERS WILL CONTINUE AT OR ABOVE FLOOD STAGE... ...LOCALLY HEAVY RAINFALL POSSIBLE FRIDAY... ADDITIONAL RIVERS WILL REACH FLOOD STAGE OVER THE NEXT FEW DAYS. SEE THE LATEST RIVER FLOOD WARNINGS FOR MORE INFORMATION. BANDS OF SHOWERS AND THUNDERSTORMS ASSOCIATED WITH IVAN WILL AFFECT THE AREA AGAIN ON FRIDAY. LOCALLY HEAVY RAINFALL IS POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF SEVERE WEATHER APPROACHES. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THE WEATHER SITUATION THIS AFTERNOON. PLEASE RELAY ANY REPORTS OF DAMAGE OR FLOODING TO THE NATIONAL WEATHER SERVICE AND LOCAL COUNTY EMERGENCY MANAGEMENT. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WWW.SRH.NOAA.GOV/JAX. MZ/CAMP
In the hours before
Special weather statement, Sep 17, 12:32 AM EDT, 2 hours 51 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 |
|---|---|---|---|---|
| Sep 16, 11:10 PM EDT | Tornado Warning | JAX | Coffee | 35 min |
| Sep 17, 12:20 AM EDT | Severe Thunderstorm Warning | JAX | Echols | 25 min |
| Sep 17, 12:28 AM EDT | Tornado Warning | JAX | Echols | 32 min |
| Sep 17, 2:36 AM EDT | Severe Thunderstorm Warning | JAX | Atkinson, Ware | 39 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2004Every severe thunderstorm warning in 2004
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.