Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 111, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Apr 21, 1997, 5:07 PM CDT for Lafayette County, Mississippi. It was in force for 33 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
- Apr 21, 1997, 5:07 PM CDT (22:07 UTC)
- Expired
- Apr 21, 1997, 5:40 PM CDT
- In force
- 33 min
- Issued by
- NWS Memphis, TN
- Area
- Whole counties
County Lafayette County, MS
The radar
The Memphis radar (KNQA), 115 km from the middle of the area, began a volume at 22:08 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 |
|---|---|---|---|
| Apr 21, 5:35 PM CDT | Hail 1.75 | Dogtown, 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, 10.1 hours before the alert went out and 68 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 212207 RRA SVRMEM MSC071-212240- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEMPHIS TN 507 PM CDT MON APR 21 1997 THE NATIONAL WEATHER SERVICE IN MEMPHIS TN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 540 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWESTERN MISSISSIPPI ...LAFAYETTE COUNTY AT 504 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER WEATHER RADAR 6 MILES SOUTHEAST OF OXFORD OR 4 MILES WEST OF DENMARK MOVING EAST AT 30 MPH. THIS STORM WILL PASS NEAR DENMARK AND TULA BY 510 PM CDT. THIS STORM HAS PRODUCED DIME SIZE HAIL IN OXFORD. .THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOJR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A PLACE OF SAFETY...PREFERABLY INSIDE A STRONG BUILDING BUT 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 21, 3:40 PM CDT, 1 hour 27 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 26 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, 5:31 PM CDT | Severe Thunderstorm Warning | MEG | Itawamba, Prentiss | 49 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; radar from the NEXRAD Level II archive.