Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 112, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Apr 21, 1997, 5:31 PM CDT for Itawamba County, Prentiss County, Mississippi. It was in force for 49 min. 2 reports 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
- Apr 21, 1997, 5:31 PM CDT (22:31 UTC)
- Expired
- Apr 21, 1997, 6:20 PM CDT
- In force
- 49 min
- Issued by
- NWS Memphis, TN
- Area
- Whole counties
Counties Itawamba County, MS, Prentiss County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 21, 5:32 PM CDT | Hail 0.75 | Casey Creek, MS | |
| Apr 21, 6:10 PM CDT | Hail 1.75 | Sand Spgs, MS |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 21, 1:30 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 10.5 hours before the alert went out and 144 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
- 465 J/kg
- Mixed-layer CIN
- -168 J/kg
- Mixed-layer LCL
- 1076 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- -64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMEM 212231 RRA SVRMEM MSC057-117-212320- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEMPHIS TN 531 PM CDT MON APR 21 1997 THE NATIONAL WEATHER SERVICE IN MEMPHIS TN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 620 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEASTERN MISSISSIPPI ...NORTHERN ITAWAMBA COUNTY ...SOUTHERN PRENTISS COUNTY AT 529 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER WEATHER RADAR NEAR MARIETTA OR 11 MILES SOUTHEAST OF BOONEVILLE MOVING EAST AT 30 MPH. THIS STORM WILL PASS NEAR SANDY SPRINGS AND HAZELDELL BY 535 PM CDT. .IF YOU ARE CAUGHT OUTSIDE...SEEK REFUGE FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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 21, 3:40 PM CDT, 1 hour 51 minutes before
TNZ008>016-021-022-024>041-049-050-052>102-212115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 340 PM CDT MON APR 21 1997 ...SEVERE WEATHER THREAT HAS ENDED OVER SOUTHWEST TENNESSEE... THE THREAT OF SEVERE WEATHER HAS ENDED FOR THE EXTREME SOUTHWEST PART OF TENNESSEE. SEVERE THUNDERSTORM WATCH NUMBER 166 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES IN SOUTHWEST TENNESSEE SHELBY...TIPTON...FAYETTE...HAYWOOD...HARDEMAN AND MADISON. SEVERE THUNDERSTORM WATCH NUMBER 166 REMAINS IN EFFECT FOR PARTS OF WEST AND MUCH OF MIDDLE TENNESSEE UNTIL 8 PM CDT. SEVERE THUNDERSTORM WATCH NUMBER 167 REMAINS IN EFFECT FOR A LARGE PART OF EAST TENNESSEE UNTIL 9 PM EDT/8 PM CDT. STAY TUNED TO THIS STATION FOR LATER STATEMENTS.
Special weather statement, Apr 21, 3:41 PM CDT, 1 hour 50 minutes before
TNZ008>016-021-022-024>041-049-050-052>102-212115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 340 PM CDT MON APR 21 1997 ...SEVERE WEATHER THREAT HAS ENDED OVER SOUTHWEST TENNESSEE... THE THREAT OF SEVERE WEATHER HAS ENDED FOR THE EXTREME SOUTHWEST PART OF TENNESSEE. SEVERE THUNDERSTORM WATCH NUMBER 166 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES IN SOUTHWEST TENNESSEE SHELBY...TIPTON...FAYETTE...HAYWOOD...HARDEMAN AND MADISON. SEVERE THUNDERSTORM WATCH NUMBER 166 REMAINS IN EFFECT FOR PARTS OF WEST AND MUCH OF MIDDLE TENNESSEE UNTIL 8 PM CDT. SEVERE THUNDERSTORM WATCH NUMBER 167 REMAINS IN EFFECT FOR A LARGE PART OF EAST TENNESSEE UNTIL 9 PM EDT/8 PM CDT. STAY TUNED TO THIS STATION FOR LATER STATEMENTS.
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 4:11 PM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Prentiss | 49 min |
| Apr 21, 4:24 PM CDT | Severe Thunderstorm Warning | MEG | Lafayette | 46 min |
| Apr 21, 4:49 PM CDT | Severe Thunderstorm Warning | MEG | Pontotoc | 46 min |
| Apr 21, 5:07 PM CDT | Severe Thunderstorm Warning | MEG | Lafayette | 33 min |
| Apr 21, 5:36 PM CDT | Severe Thunderstorm Warning | MEG | Pontotoc | 49 min |
| Apr 21, 5:50 PM CDT | Severe Thunderstorm Warning | MEG | Tishomingo | 30 min |
| Apr 21, 6:19 PM CDT | Severe Thunderstorm Warning | MEG | Chickasaw | 46 min |
| Apr 21, 6:33 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun | 32 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1997Every severe thunderstorm warning in 1997
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.