Alert archive / Georgia / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 249, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 17, 1998, 4:18 PM EDT for Chattahoochee County, Georgia. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 17, 1998, 4:18 PM EDT (20:18 UTC)
- Expired
- Apr 17, 1998, 5:05 PM EDT
- In force
- 47 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Chattahoochee County, GA
The radar
The Maxwell AFB radar (KMXX), 96 km from the middle of the area, began a volume at 20:21 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.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.3 hours before the alert went out and 117 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
- 1255 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 526 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
648 WUUS1 KBHM 172019 RRA SVRBHM GAC053-172105- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 318 PM CDT FRI APR 17 1998 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CHATTAHOOCHEE COUNTY... IN WEST CENTRAL GEORGIA * UNTIL 505 PM EDT (405 PM CDT) * AT 416 PM EDT... A SEVERE THUNDERSTORM WAS SHOWN...BY WEATHER RADAR MOVING INTO THE WESTERN PORTION OF CHATTAHOOCHEE COUNTY. THIS STORM IS MOVING EAST AT 25 MILES PER HOUR. THIS WILL AFFECT THE TOWN OF CUSSETTA BY 435 PM EDT. THE MAIN THREAT FROM THIS STORM WILL BE HAIL. THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS. THIS THUNDERSTORM IS CAPABLE OF PRODUCING EXTREMELY LARGE HAIL WHICH MAY CAUSE SEVERE DAMAGE TO PROPERTY AND SERIOUS INJURY TO PEOPLE AND LIVESTOCK. DAMAGING WINDS AND TORRENTIAL RAIN ARE ALSO LIKELY WITH THIS STORM. MOVE TO A STURDY BUILDING AND STAY AWAY FROM WINDOWS.
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, Apr 17, 11:30 AM EDT, 4 hours 48 minutes before
ALZ001>050-GAZ089-090-102-120-172300- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 1030 AM CDT FRI APR 17 1998 A COLD FRONT FROM MOBILE TO MONTGOMERY WILL CONTINUE TO SLIDE SLOWLY SOUTHEASTWARD TODAY. COOLER AND STABLE AIR BEHIND THE FRONT WILL INHIBIT ANY STRONG THUNDERSTORM DEVELOPMENT TODAY. A FEW THUNDERSTORMS MAY DEVELOP ALONG THE FRONT THIS AFTERNOON...GENERALLY SOUTH OF THE MONTGOMERY AND AUBURN AREAS. A RAIN EVENT IS SHAPING UP FOR THE AREA TONIGHT AND SATURDAY AS MOISTURE BEGINS TO RIDE OVER THE FRONT. SOME AREAS COULD HAVE SOME SIGNIFICANT RAINFALL THIS WEEKEND.
Special weather statement, Apr 17, 11:30 AM EDT, 4 hours 48 minutes before
ALZ001>050-GAZ089-090-102-120-172300- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 1030 AM CDT FRI APR 17 1998 A COLD FRONT FROM MOBILE TO MONTGOMERY WILL CONTINUE TO SLIDE SLOWLY SOUTHEASTWARD TODAY. COOLER AND STABLE AIR BEHIND THE FRONT WILL INHIBIT ANY STRONG THUNDERSTORM DEVELOPMENT TODAY. A FEW THUNDERSTORMS MAY DEVELOP ALONG THE FRONT THIS AFTERNOON...GENERALLY SOUTH OF THE MONTGOMERY AND AUBURN AREAS. A RAIN EVENT IS SHAPING UP FOR THE AREA TONIGHT AND SATURDAY AS MOISTURE BEGINS TO RIDE OVER THE FRONT. SOME AREAS COULD HAVE SOME SIGNIFICANT RAINFALL THIS WEEKEND.
Special weather statement, Apr 17, 4:00 PM EDT, 18 minutes before
ALZ001>064-FLZ001>015-172300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 300 PM CDT FRI APR 17 1998 ...SEVERE WEATHER TO AFFECT THE GULF COAST STATES THIS WEEKEND... ...HEAVY RAINFALL POSSIBLE ACROSS NORTH ALABAMA SATURDAY AND SATURDAY NIGHT... A COOL FRONT ACROSS SOUTH ALABAMA IS EXPECTED TO MOVE BACK NORTHWARD ON SATURDAY AS A SURFACE LOW DEVELOPS NEAR THE ALABAMA AND MISSISSIPPI BORDER. SOUTHERLY WINDS WILL INCREASE AS THE WARM FRONT ADVANCES NORTHWARD...BRINGING MOIST AND UNSTABLE AIR RAPIDLY BACK INTO THE REGION. THE STORM PREDICTION CENTER HAS OUTLOOKED ALL OF ALABAMA AND NORTHWEST FLORIDA FOR A MODERATE RISK OF SEVERE THUNDERSTORMS FOR SATURDAY THROUGH SUNDAY MORNING. STRONG TO SEVERE THUNDERSTORMS WILL DEVELOP OVER SOUTHERN ALABAMA AND NORTHWEST FLORIDA DURING THE LATE MORNING AND EARLY AFTERNOON HOURS. THE STORMS WILL THEN SPREAD INTO NORTH ALABAMA AND WEST-CENTRAL GEORGIA DURING THE AFTERNOON AND EVENING HOURS. FURTHER NORTH...ACROSS THE TENNESSEE VALLEY REGION...HEAVY RAINFALL IS POSSIBLE SATURDAY AFTERNOON AND NIGHT AS THIS AREA WILL STAY NORTH OF THE WARM FRONT. STAY TUNED TO NOAA WEATHER RADIO...RADIO OR TELEVISION FOR LATER UPDATES ON THIS DEVELOPING WEATHER SITUATION.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 7:15 AM EDT | Severe Thunderstorm Warning | BMX | Chattahoochee | 20 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.