Alert archive / Georgia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 49, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Nov 9, 1990, 8:16 PM EST for Effingham County, Georgia. It was in force for 44 min.
The area
The counties it named.
The facts
- Issued
- Nov 9, 1990, 8:16 PM EST (01:16 UTC)
- Expired
- Nov 9, 1990, 9:00 PM EST
- In force
- 44 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
County Effingham County, GA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Jacksonville, FL (KAYS), launched 00:00Z, 1.3 hours before the alert went out and 210 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
- 328 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 391 m²/s²
- 0-3 km storm-relative helicity
- 451 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAV 100118 SVRSAV GAC103-100200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAVANNAH GA 816 PM EST FRI NOV 9 1990 THE NATIONAL WEATHER SERVICE IN SAVANNAH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST GEORGIA ...EFFINGHAM COUNTY AT 815 PM EST A SEVERE THUNDERSTORM WAS INDICATED BY THE SAVANNAH WEATHER RADAR OVER EDEN. THE SEVERE STORM IS MOVING TO THE NORTHEAST AT 50 MPH AND WILL AFFECT RINCON BY 830 PM EST. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WAR2NING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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.
In the hours before
Special weather statement, Nov 9, 2:27 PM EST, 5 hours 49 minutes before
FLZ007-092030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 225 PM EST FRI NOV 9 1990 ...TORNADO WATCH #768 CONTINUES IN EFFECT UNTIL 500 PM EST FOR BAKER...COLUMBIA...HAMILTON...LAFAYETTE...AND SUWANNEE COUNTIES... AT 225 PM EST NATIONAL WEATHER SERVICE RADARS SHOWED LIGHT TO MODERATE RAIN IN NORTHEAST FLORIDA FROM LAKE GEORGE NORTHWEST TO THE LIVE OAK A LAKE CITY AREAS. SCATTERED SHOWERS WERE LOCATED OVER THE OKEFENOKEE SWAMP. FURTHER WEST A LINE OF THUNDERSTORMS WAS LOCATED FROM NEAR ALBANY GEORGIA SOUTH TO NEAR TALLAHASSEE AND CRAWFORDVILLE. IT IS MOVING EAST AT 15 MILES AN HOUR. THIS LINE OF THUNDERSTORMS HAS THE POTENTIAL FOR PRODUCING SEVERE WEATHER. RESIDENTS OF NORTHEAST FLORIDA AND SOUTHEAST GEORGIA ARE URGED TO REMAIN ALERT FOR SEVERE WEATHER DEVELOPMENT. TUNE TO NOAA WEATHER RADIO OR YOUR LOCAL NEWS MEDIA FOR THE LATEST INFORMATION. IF YOU OBSERVE A TORNADO OR DAMAGING WEATHER...TAKE SHELTER. WHEN IT'S SAFE CALL YOUR LOCAL LAW ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPO TO THE NATIONAL WEATHER SERVICE.
Special weather statement, Nov 9, 6:15 PM EST, 2 hours 1 minute before
FLZ007-008-009-100015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 615 PM EST FRI NOV 9 1990 ...TORNADO WATCH #769 CONTINUES IN EFFECT FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA UNTIL 1000 PM EST... AT 615 PM EST NATIONAL WEATHER SERVICE RADARS INDICATED SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN...OVER NORTHEAST FLORIDA FROM OCALA NORTH TO JACKSONVILLE AND WEST TO CROSS CITY AND VALDOSTA. HEAVIEST RAINFALL WAS JUST SOUTH AND WEST OF JACKSONVILLE AND OVER THE PINHOOK SWAMP. IN SOUTH GEORGIA STRONG THUNDERSTORMS WERE INDICATED 20 MILES WEST OF WAYCROSS AND ALMA...AND MIDWAY BETWEEN BRUNSWICK AND SAVANNAH. ALL THIS ACTIVITY WAS MOVING EAST AND NORTHEAST AT 35 MILES AN HOUR. EARLIER THIS EVENING TORNADOES WERE REPORTED DOWNSTATE NEAR SANFORD... MAITLAND...AND EATONVILLE. RESIDENTS OF NORTHEAST FLORIDA AND SOUTHEAST GEORGIA ARE URGED TO REMAIN ALERT...TUNE TO NOAA WEATHER RADIO OR YOWUR LOCAL NEWS MEDIA FOR THE LATEST INFORMATION. IF YOU SPOT SEVERE WEATHER...TAKE SHELTER. WHEN ITS SAFE...CALL YOUR LOCAL LAW ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR MESSAGE TO THE NATIONAL WEATHER SERVICE.
Special weather statement, Nov 9, 8:03 PM EST, 13 minutes before
FLZ008-007-009-GAZ013-015-100200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 758 PM EST FRI NOV 9 1990 ...TORNADO WATCH #769 CONTINUES IN EFFECT FOR ALACHUA...BAKER...BRADFORD... CLAY...DUVAL...NASSAU...PUTNAM...ST JOHN AND UNION COUNTIES... ...THE TORNADO WATCH IS NO LONGER IN EFFECT FOR COLUMBIA...DIXIE... GILCHRIST...HAMILTON...LAFAYETTE...LEVY...MARION...AND SUWANNEE COUNTIES... ...STREET FLOODING IN JACKSONVILLE... AT 800 PM EST NATIONAL WEATHER SERVICE RADARS SHOWED MOST OF THE THUNDERSTORMS WITH HEAVY RAINFALL IN NORTHEAST FLORIDA HAD MOVED OFFSHORE FROM JACKSONVILLE TO ST AUGUSTINE. ANOTHER THUNDERSTORM WITH HEAVY RAIN WAS OFFSHORE FROM CUMBERLAND ISLAND AND BRUNSWICK GEORGIA. A LINE OF STRONG THUNDERSTORMS WAS INDICATED IN EXTREME SOUTHEAST GEORGIA MIDWAY BETWEEN WAYCROSS AND BRUNSWICK. THE SOUTHERN END OF THE LINE WAS NEAR FOLKSTON. OTHER THUNDERSTORM ACTIVITY WAS LOCATED FROM JUST EAST OF OCALA NORTHEAST TO NEAR MARINELAND. ALL THIS ACTIVITY CONTINUES TO MOVES AT 35 MILES AN HOUR. FAST MOVING THUNDERSTORMS DUMPED HEAVY RAIN IN A SHORT TIME OVER PORTI OF NORTHEAST FLORIDA...MAINLY FROM THE OKEFENOKEE SWAMP AND GAINESVILLEASTWARD. BETWEEN 530 AND 700 PM EST FLOODING WAS REPORTED IN DOWNTOWN JACKSONVILLE. 2.50 INCHES OF RAIN WERE REPORTED AT TV 12. 2 INCHES OF RAIN WAS REPORTED IN VENETIA. WAIST DEEP WATER WAS REPORTED AT CHURCH AND MAIN STREETS BY TV 17. MOST OF THE RAIN AND THUNDERSTORM ACTIVITY IS ENDING OVER NORTHEAST FLORIDA...HOWEVER THUNDERSTORMS CONTINUE IN EXTREME SOUTHEAST GEORGIA AND A TORNADO WAS SPOTTED IN VOLUSIA COUNTY AT 739 PM. PERSONS IN NORTHEAST FLORIDA AND SOUTHEAST GEORGIA SHOULD REMAIN ALERT FOR SEVERE WEATHER...BE PREPARED TO TAKE ACTION IF SEVERE WEATHER IS SIGHTED.
Nearby
Severe Thunderstorm Warnings in Georgia, 1990Every severe thunderstorm warning in 1990
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.