Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 78, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Apr 13, 1998, 9:59 PM CDT for Obion County, Tennessee. It was in force for 46 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 13, 1998, 9:59 PM CDT (02:59 UTC)
- Expired
- Apr 13, 1998, 10:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Memphis, TN
- Area
- Whole counties
County Obion County, TN
The radar
The Paducah radar (KPAH), 86 km from the middle of the area, began a volume at 03:02 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 13, 10:20 PM CDT | Hail 0.75 | Crystal, TN |
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 13, 6:30 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 3.0 hours before the alert went out and 185 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
- 652 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 898 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 3.2
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.
In the hours before
Special weather statement, Apr 13, 4:07 PM CDT, 5 hours 52 minutes before
ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017- 020>024-030-031-TNZ001>004-019>021-048>054-088>092-140900- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE MEMPHIS TN 407 PM CDT MON APR 13 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MEMPHIS TENNESSEE..INCLUDING WEST TENNESSEE..NORTH MISSISSIPPI..EAST ARKANSAS AND THE MISSOURI BOOTHEEL. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT FOR THE ENTIRE COUNTY WARNING AREA INCLUDING EAST ARKANSAS..THE MISSOURI BOOTHEEL..WEST TENNESSEE AND NORTH MISSISSIPPI. AN UPPER LEVEL STORM SYSTEM WILL CONTINUE TO INTENSIFY AS IT MOVES EASTWARD THROUGH THE MID-MISSISSIPPI VALLEY AND INTO THE GREAT LAKES TONIGHT. STRONG SOUTHERLY WINDS AHEAD OF THIS SYSTEM HAVE TRANSPORTED ABUNDANT GULF MOISTURE INTO THE REGION AND DESTABILIZED THE ATMOSPHERE. IN ADDITION..THE VERTICAL WIND PROFILE HAVE STRENGTHEN AND BECOME FAVORABLE FOR THUNDERSTORM DEVELOPMENT. A COLD FRONT ASSOCIATED WITH THIS SYSTEM WILL MOVE ACROSS ARKANSAS TONIGHT. THUNDERSTORMS WILL DEVELOP AHEAD OF THE FRONT AND MOVE INTO THE MID-SOUTH LATER THIS EVENING. SOME OF THESE COULD POSE THE THREAT OF SEVERE WEATHER. THE MAIN THREAT WITH THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS..ALTHOUGH WIND PROFILES WILL SUPPORT A FEW TORNADOES. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD CONTINUE TO MONITOR THE SITUATION AS ACTIVATION COULD BE REQUESTED LATER THIS EVENING.
Special weather statement, Apr 13, 4:07 PM CDT, 5 hours 52 minutes before
ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017- 020>024-030-031-TNZ001>004-019>021-048>054-088>092-140900- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE MEMPHIS TN 407 PM CDT MON APR 13 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MEMPHIS TENNESSEE..INCLUDING WEST TENNESSEE..NORTH MISSISSIPPI..EAST ARKANSAS AND THE MISSOURI BOOTHEEL. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT FOR THE ENTIRE COUNTY WARNING AREA INCLUDING EAST ARKANSAS..THE MISSOURI BOOTHEEL..WEST TENNESSEE AND NORTH MISSISSIPPI. AN UPPER LEVEL STORM SYSTEM WILL CONTINUE TO INTENSIFY AS IT MOVES EASTWARD THROUGH THE MID-MISSISSIPPI VALLEY AND INTO THE GREAT LAKES TONIGHT. STRONG SOUTHERLY WINDS AHEAD OF THIS SYSTEM HAVE TRANSPORTED ABUNDANT GULF MOISTURE INTO THE REGION AND DESTABILIZED THE ATMOSPHERE. IN ADDITION..THE VERTICAL WIND PROFILE HAVE STRENGTHEN AND BECOME FAVORABLE FOR THUNDERSTORM DEVELOPMENT. A COLD FRONT ASSOCIATED WITH THIS SYSTEM WILL MOVE ACROSS ARKANSAS TONIGHT. THUNDERSTORMS WILL DEVELOP AHEAD OF THE FRONT AND MOVE INTO THE MID-SOUTH LATER THIS EVENING. SOME OF THESE COULD POSE THE THREAT OF SEVERE WEATHER. THE MAIN THREAT WITH THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS..ALTHOUGH WIND PROFILES WILL SUPPORT A FEW TORNADOES. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD CONTINUE TO MONITOR THE SITUATION AS ACTIVATION COULD BE REQUESTED LATER THIS EVENING.
Local storm report, Apr 13, 7:45 PM CDT, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TENNESSEE
745 PM CDT MON APR 13 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0730 PM PALATKA AR 1.75 INCH HAIL
04/13/98 CLAY HIGHWAY PATROL REPORTED
GOLFBALL SIZE HAILThe office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 11:00 PM CDT | Severe Thunderstorm Warning | MEG | Lake | 30 min |
| Apr 13, 11:16 PM CDT | Tornado Warning | MEG | Lake, Obion | 59 min |
| Apr 14, 12:10 AM CDT | Severe Thunderstorm Warning | MEG | Weakley | 45 min |
| Apr 14, 12:31 AM CDT | Severe Thunderstorm Warning | MEG | Carroll, Henry | 64 min |
| Apr 14, 12:52 AM CDT | Severe Thunderstorm Warning | MEG | Gibson | 48 min |
| Apr 14, 1:05 AM CDT | Severe Thunderstorm Warning | MEG | Shelby | 60 min |
| Apr 13, 7:02 PM CDT | Tornado Warning | MEG | Clay | 58 min |
| Apr 13, 7:56 PM CDT | Tornado Warning | MEG | Clay | 24 min |
| Apr 13, 10:02 PM CDT | Severe Thunderstorm Warning | MEG | Lawrence | 28 min |
| Apr 13, 10:15 PM CDT | Severe Thunderstorm Warning | MEG | Greene | 45 min |
| Apr 13, 11:25 PM CDT | Severe Thunderstorm Warning | MEG | Cross | 50 min |
| Apr 13, 11:30 PM CDT | Severe Thunderstorm Warning | MEG | Mississippi | 50 min |
| Apr 14, 12:22 AM CDT | Severe Thunderstorm Warning | MEG | Cross | 48 min |
| Apr 14, 12:48 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden | 37 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 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.