Alert archive / Georgia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 6, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Feb 4, 1990, 9:36 AM EST for Jasper County, Georgia. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- Feb 4, 1990, 9:36 AM EST (14:36 UTC)
- Expired
- Feb 4, 1990, 10:15 AM EST
- In force
- 39 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Jasper 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
Athens Municipal, GA (KAHN), launched 12:00Z, 2.6 hours before the alert went out and 79 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
- 153 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 307 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMCN 041437
SVRMCN
GAC159-041515-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MACON GA
936 AM EST SUN FEB 4 1990
THE NATIONAL WEATHER SERVICE IN MACON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NORTHEAST GEORGIA
...JASPER
AT 935 AM RADAR SHOWED A SEVERE THUNDERSTORM SOUTHWEST OF
MONTICELLO...MOVING NORTHEAST AT 45 MPH TOWARD THE MONTICELLO AREA.
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.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, Feb 4, 5:58 AM EST, 3 hours 38 minutes before
GAZ006-008-009-041400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 600 AM EST SUN FEB 4 1990 ...THUNDERSTORMS WERE MOVING INTO CENTRAL GEORGIA FROM THE WEST... AT 550 AM RADAR SHOWED FEW THUNDERSTORMS PRODUCING HEAVY RAIN AND POSSIBLY STRONG GUSTY WINDS FROM FORSYTH TO 30 MILES WEST OF MACON NEAR BUTLER. MOVEMENT WAS EAST AT 35 MPH. THEY WILL BE MOVING ACROSS CENTRAL GEORGIA FROM THE MACON AREA NORTHWARD BEFORE DAWN. THE THUNDERSTORMS WERE WITHIN A LARGE AREA OF LIGHT TO MODERATE SHOWERS THAT STRETCHED BACK TO THE WEST TO THE ALABAMA BORDER.
Special weather statement, Feb 4, 8:32 AM EST, 1 hour 4 minutes before
GAZ002>004-041430- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 830 AM EST SUN FEB 4 1990 ...SHOWERS AND THUNDERSTORMS MOVING RAPIDLY ACROSS NORTHEAST GEORGIA... A BAND OF SHOWERS AND THUNDERSTORMS EXTENDS FROM THE ATLANTA AREA TO NEAR TOCCOA AND TO NEAR GREENVILLE SOUTH CAROLINA. THE STRONGER STORMS WILL LIKELY PRODUCE BRIEF HEAVY RAIN AND STRONG GUSTY WINDS AS THEY MOVE EASTWARD AT 60 MPH. ELSEWHERE...AN AREA OF SHOWERS AND LIGHT RAIN EXTEND EAST OF A LINE FROM LAGRANGE TO BLAIRSVILLE GEORGIA AND TO BRYSON CITY NORTH CAROLINA. MOVEMENT WAS TO THE EAST 60 MPH.
Special weather statement, Feb 4, 9:17 AM EST, 19 minutes before
GAZ006-008-009-041400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 915 AM EST SUN FEB 4 1990 ...LINE OF FAST MOVING THUNDERSHOWERS MOVING INTO CENTRAL GEORGIA... AT 910 AM NATIONAL WEATHER SERVICE RADAR IN MACON SHOWED A LINE OF SHOWERS AND OCCASIONAL THUNDERSHOWERS FROM NEAR MONTICELLO SOUTHWEST TO NEAR FORSYTH...AND CONTINUING SOUTHWEST TO JUST SOUTH OF THE COLUMBUS AREA. THE LINE WAS 5 MILES WIDE AND MOVING SOUTHEAST AT 25 MPH. THIS LINE OF THUNDERSHOWERS WILL PRODUCE BRIEF HEAVY RAIN...GUSTY WINDS...AND OCCASIONAL LIGHTNING AS IT CONTINUES MOVING SOUTHEAST THROUGH CENTRAL GEORGIA THIS MORNING.
Special weather statement, Feb 4, 9:32 AM EST, 4 minutes before
GAZ002>004-041530- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 930 AM EST SUN FEB 4 1990 ...STRONG THUNDERSTORMS CONTINUE OVER NORTHEAST GEORGIA... A BAND OF STRONG THUNDERSTORMS EXTENDS FROM THE ATHENS AREA NORTHWARD TO NEAR DANIELSVILLE AND ROYSTON. THESE STORMS WILL LIKELY PRODUCE BRIEF HEAVY RAIN AND STRONG GUSTY WINDS AS THEY MOVE EASTWARD AT 60 MPH. ELSEWHERE...SHOWERS AND PATCHES OF LIGHT RAIN CONTINUE OVER EASTERN GEORGIA AND EXTEND INTO THE WESTERN CAROLINAS. MOVEMENT WAS TO THE EAST 60 MPH.
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.