Alert archive / Georgia / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 247, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 17, 1998, 7:15 AM EDT for Chattahoochee County, Georgia. It was in force for 20 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, 7:15 AM EDT (11:15 UTC)
- Expired
- Apr 17, 1998, 7:35 AM EDT
- In force
- 20 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 11:18 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 00:00Z, 11.3 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
- 1217 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 573 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 368 m²/s²
- Significant tornado parameter
- 3.0
- Supercell composite
- 10.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 171115 RRA SVRBHM GAC053-171135- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 615 AM 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 735 AM EDT (635 AM CDT) * AT 714 AM EDT... A SEVERE THUNDERSTORM WAS SHOWN... 8 MILES SOUTHWEST OF CUSSETA... BY WEATHER RADAR... MOVING EAS(T 55 MPH. * SEVERE THUNDERSTORM WILL BE NEAR... CUSSETA AROUND 720 AM EDT ... RENFROE AROUND 720 AM EDT ... THIS IS A DANGEROUS STORM! STAY INDOORS 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, 2:07 AM EDT, 5 hours 8 minutes before
ALZ008-016-017-170625- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 107 AM CDT FRI APR 17 1998 THE TORNADO WATCH 238 HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... IN ALABAMA ...MARSHALL... CULLMAN... BLOUNT
Special weather statement, Apr 17, 2:29 AM EDT, 4 hours 46 minutes before
ALZ010-170650- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 129 AM CDT FRI APR 17 1998 THE TORNADO 238 WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... IN ALABAMA ...DEKALB
Special weather statement, Apr 17, 2:29 AM EDT, 4 hours 46 minutes before
ALZ010-170650- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 129 AM CDT FRI APR 17 1998 THE TORNADO 238 WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... IN ALABAMA ...DEKALB
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 4:18 PM EDT | Severe Thunderstorm Warning | BMX | Chattahoochee | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.