Alert archive / Georgia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 31, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 17, 1990, 2:20 AM EST for Calhoun County, Terrell County, Georgia. It was in force for 25 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 17, 1990, 2:20 AM EST (07:20 UTC)
- Expired
- Mar 17, 1990, 2:45 AM EST
- In force
- 25 min
- Issued by
- NWS Tallahassee, FL
- Area
- Whole counties
Counties Calhoun County, GA, Terrell County, GA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 17, 2:30 AM EST | Thunderstorm Wind 0 | Calhoun, GA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Apalachicola Mun, FL (KAQQ), launched 00:00Z, 7.3 hours before the alert went out and 218 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
- 557 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 574 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 257 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCSG 170722 SVRCSG GAC037-273-170745- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBUS GA 220 AM EST SAT MAR 17 1990 THE NATIONAL WEATHER SERVICE IN COLUMBUS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 AM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST GEORGIA ...CALHOUN COUNTY...TERRELL COUNTY AT 217 AM EST WEATHER RADARS AND SATELLITE INFORMATION INDICATED A SEVERE THUNDERSTORM JUST EAST OF EDISON GEORGIA IN CALHOUN COUNTY. MOVEMENT WAS NORTHEAST AT 35 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVmANCE WARNING. 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, Mar 17, 1:08 AM EST, 1 hour 12 minutes before
FLZ003-005-GAZ011-012-170900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 1:10 AM EST (12:10 AM CST) SAT MAR 17 1990 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EST FOR MUCH OF NORTHWEST AND NORTH FLORIDA AND SOUTHWEST GEORGIA... AT 100 AM EST NATIONAL WEATHER SERVICE RADARS INDICATED A LARGE AREA OF SHOWERS WITH EMBEDDED THUNDERSTORMS CONTAINING HEAVY RAIN EXTENDED WEST OF A LINE FROM NEAR BLAKELY GEORGIA TO PANAMA CITY AND INTO THE GULF FOR OVER 150 MILES. THE HEAVIEST SHOWERS WERE OVER NORTHERN JACKSON COUNTY. THE RAIN AREA IS MOVING EAST AT 10 MPH. WHILE THE THREAT FOR SEVERE WEATHER HAS DECREASED PERSONS SHOULD REMAIN ON THE OUTLOOK FOR POTENTIALLY TlHREATENING WEATHER THROUGHOUT THE NIGHT. FURTHER STATEMENTS WILL BE ISSUED IF NEEDED. COLLINS
Special weather statement, Mar 17, 1:45 AM EST, 35 minutes before
FLZ004-170745- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE APALACHICOLA FL 138 AM EST SAT FEB 1771990 ...TORNADO WATCH WATCH CONTINUES IN EFFECT FOR A LARGE PART OF THE FLORIDA PANHANDLE...INCLUDING GULF COUNTY UNTIL 400 AM EST. AT 127 AM EST...AN 80 MILE WIDE AREA OF RAIN AND ISOLATED THUNDERSTORMS WITH HEAVU RAIN WAS OVER SOUTHEAST ALABAMA...EXTREME SOUTHWEST GEORGIA... AND THE WEST FLORIDA PANHANDLE. THE STRONGEST THUNDERSTORMS WERE 20 MILES SOUTHWEST OF PANAMA CITY FLORIDA AND JUST SOUTHEAST OF DOTHAN ALABAMA. THE LEADING EDGE OF THIS AREA REACHED FROM 20 MILES EAST OF COLUMBUS GEORGIA TO PANAMA CITY AND THEN TRAILED SOUTHWEST OUT OVER THE GULF FOR WELL OVEIR 125 MILES. THE AREA WAS DRIFTING SLOWLY TO THE EAST AT 5 MILES AN HOUR.
Special weather statement, Mar 17, 2:11 AM EST, 9 minutes before
FLZ003-005-GAZ011-012-170900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 2:15 AM EST (1:15 AM CST) SAT MAR 17 1990 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EST FOR MUCH OF NORTHWEST AND NORTH FLORIDA AND SOUTHWEST GEORGIA... AT 210 AM EST NATIONAL WEATHER SERVICE RADARS INDICATED A LARGE AREA OF SHOWERS WITH EMBEDDED THUNDERSTORMS CONTAINING HEAVY RAIN EXTENDED WEST OF A LINE FROM NEAR ALBANY GEORGIA TO PANAMA CITY AND INTO THE GULF FOR OVER 150 MILES. THE HEAVIEST THUNDERSTORMS WERE IN THE PANAMA CITY AREA AND SOUTHWEST OF ALBANY GEORGIA. THE PRECIPITATION IS MOVING EAST AT 5 MPH. HEAVY RAIN AND SOME THUNDERSTORMS SHOULD BEGIN MOVING INTO SOUTHERN CALHOUN COUNTY DURING THE NEXT HOUR OR TWO. FURTHER STATEMENTS WILL BE ISSUED AS NEEDED. COLLINS
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 9:34 PM EST | Severe Thunderstorm Warning | TAE | Macon, Taylor | 41 min |
| Mar 16, 11:40 PM EST | Flash Flood Warning | TAE | Muscogee | 3 hr |
| Mar 17, 12:57 AM EST | Severe Thunderstorm Warning | TAE | Stewart | 63 min |
| Mar 17, 2:53 AM EST | Flash Flood Warning | TAE | Muscogee | 4 hr |
| Mar 17, 11:00 AM EST | Flash Flood Warning | TAE | Webster | 3 hr |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.