Alert archive / Arkansas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 129, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 19, 1990, 5:37 PM CDT for Howard County, Arkansas. It was in force for 68 min.
The area
The counties it named.
The facts
- Issued
- May 19, 1990, 5:37 PM CDT (22:37 UTC)
- Expired
- May 19, 1990, 6:45 PM CDT
- In force
- 68 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
County Howard County, AR
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Longview/Gregg, TX (KGGG), launched 12:00Z, 10.6 hours before the alert went out and 201 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 327 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.3
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, May 19, 11:46 AM CDT, 5 hours 51 minutes before
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</html>Special weather statement, May 19, 5:23 PM CDT, 14 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002- 003-004-005-006- 200015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 520 PM CDT SAT MAY 19 1990 THE SHREVEPORT WEATHER RADAR AT 517 PM SHOWED STRONG THUNDERSTORMS DEVELOPING OVER SOUTHWESTERN ARKANSAS...ONE LOCATED OVER NORTHERN HOWARD COUNTY AND ANOTHER LOCATED OVER CENTRAL HOWARD COUNTY NORTH- WEST OF NASHVILLE. MOVEMENT WAS TO THE EASTNORTHEAST NEAR 30 MPH. ELSEWHERE...THUNDERSTORMS WERE DEVELOPING OVER TEXAS TO THE SOUTHEAST OF THE DALLAS AREA. THESE STORMS WILL LIKELY MOVE INTO NORTHEAST TEXAS LATER TONIGHT. A TORNADO WATCH IS IN EFFECT FOR MUCH OF EASTERN AND SOUTHEASTERN OKLAHOMA...INCLUDING MC CURTAIN COUNTY. PERSONS IN OR CLOSE TO THE TORNADO WATCH AREA SHOULD WATCH FOR RAPIDLY CHANGING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS OR WARNINGS.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 6:37 PM CDT | Tornado Warning | SHV | Pike | 38 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 1990Every severe thunderstorm warning in 1990
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.