Alert archive / Georgia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 3, NWS Jacksonville, FL

February 10, 1990Bryan County, Bulloch County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 10, 1990, 9:02 AM EST for Bryan County, Bulloch County, Georgia. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Feb 10, 1990, 9:02 AM EST (14:02 UTC)
Expired
Feb 10, 1990, 9:45 AM EST
In force
43 min
Issued by
NWS Jacksonville, FL
Area
Whole counties

Counties Bryan County, GA, Bulloch 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

Charleston AFB, SC (KCHS), launched 12:00Z, 2.0 hours before the alert went out and 168 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.

Skew-T log-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 1990-02-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 1990-02-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 227 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
42 J/kg
Mixed-layer CIN
-230 J/kg
Mixed-layer LCL
748 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
227 m²/s²
0-3 km storm-relative helicity
294 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSAV 101406
SVRSAV
GAC029-031-179-101445-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAVANNAH GA
902 AM EST SAT FEB 10 1990
 
THE NATIONAL WEATHER SERVICE IN SAVANNAH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTHEAST GEORGIA
          ...BRYAN...BULLOCH...LIBERTY
 
AT 855 EST SAVANNAH WEATHER RADAR INDICATED SEVERE THUNDERSTORMS NEAR
PEMBROKE...OVER FORT STEWART...AND 10 MILES SOUTHWEST OF STATESBORO.
THESE SEVERE STORMS ARE MOVING TO THE EAST NORTHEAST AT 50 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 ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 10, 8:13 AM ESTSevere Thunderstorm WarningJAXBulloch62 min
Feb 10, 8:43 AM ESTSevere Thunderstorm WarningJAXCandler, Tattnall32 min
Feb 10, 9:02 AM ESTSevere Thunderstorm WarningJAXLiberty43 min

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.