Alert archive / Georgia / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 168, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 28, 1998, 7:46 PM EDT for Grady County, Georgia. It was in force for 39 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
- Jul 28, 1998, 7:46 PM EDT (23:46 UTC)
- Expired
- Jul 28, 1998, 8:25 PM EDT
- In force
- 39 min
- Issued by
- NWS Tallahassee, FL
- Area
- Whole counties
County Grady County, GA
The radar
The Tallahassee radar (KTLH), 54 km from the middle of the area, began a volume at 23:49 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 28, 7:50 PM EDT | Thunderstorm Wind | Countywide, GA | Power lines down countywide. |
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.
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.8 hours before the alert went out and 53 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
- 654 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 922 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -153 m²/s²
- 0-3 km storm-relative helicity
- -94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 2:56 PM EDT, 4 hours 50 minutes earlier.
Area forecast discussion, Jul 28, 2:56 PM EDT, 4 hours 50 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TALLAHASSEE FL 256 PM EDT TUE JUL 28 1998 MID-HIGH LEVEL CLOUDS ACROSS THE AREA THIS MORNING HAS HELD OFF HEATING AND MOST CONVECTION UNTIL LATER THIS AFTERNOON OVER ALL BUT GULF COASTAL AREA. OVERALL THOUGH...LITTLE CHANGE IN WEATHER PATTERN SEEN THROUGH NEXT FCST PERIOD ACROSS OUR AREA. UPPER LEVELS CHANGE LITTLE AS BROAD RIDGE CONTINUES OVER WESTERN U.S. AND SHALLOW TROF CONTINUES OVER THE EAST RESULTING IN WEST TO NORTHWEST FLOW ALTHOUGH WEAK ACROSS THE COUNTY WARNING AREA. EAST-WEST ORIENTED SURFAE RIDGE ACROSS THE FL PENINSULA INTO EASTERN GULF WILL CONTINUE AS WELL RESULTING IN A SOUTHWEST TO WEST LOW LEVEL FLOW ACROSS THE AREA. MOIST UNSTABLE AMS WILL CONTINUE AS PWS REMAIN NEAR 2 INCHES WITH MODIFIED SOUNDINGS YIELDING AFTERNOON CAPE VALUES BETWEEN 2500-3500 J/KG. SEA BREEZE WILL BE MAIN TRIGGER FOR AFTERNOON SHOWERS AND TSTMS. SURFACE TROF IS PROGD TO DEVELOP THUR ACROSS SC INTO SE GA THAT MAY ALSO HELP TRIGGER FEW MORE STORMS ACROSS SW GA THEN. FAN POPS SEEM A TAD HIGH...30-40% EACH AFTERNOON LOOKS GOOD. WARMER FAN TEMPS PREFERRED. 13
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 5:59 PM EDT | Severe Thunderstorm Warning | TAE | Early | 46 min |
| Jul 28, 6:18 PM EDT | Severe Thunderstorm Warning | TAE | Worth | 47 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 1998Every severe thunderstorm warning in 1998
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; radar from the NEXRAD Level II archive.