Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 129, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 18, 1990, 8:42 PM CDT for Hemphill County, Wheeler County, Texas. It was in force for 63 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
- Aug 18, 1990, 8:42 PM CDT (01:42 UTC)
- Expired
- Aug 18, 1990, 9:45 PM CDT
- In force
- 63 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties
Counties Hemphill County, TX, Wheeler County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 18, 8:50 PM CDT | Hail 0.75 | Hemphill, TX |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 00:00Z, 1.7 hours before the alert went out and 137 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
- 155 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 2330 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Aug 18, 3:48 PM CDT, 4 hours 54 minutes before
TXZ001>012-COZ015>017-NMZ005-009-013-OKZ001>004-009-014-021- KSZ003-006-182145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE AMARILLO TX 345 PM CDT SAT AUG 18 1990 ...STRONG THUNDERSTORMS RAPIDLY DEVELOPING IN THE SURROUNDING AREA... AT 334 PM CDT...RADAR SHOWED NUMEROUS STRONG THUNDERSTORMS ACROSS THE TEXAS AND OKLAHOMA PANHANDLES...THE NORTHWEST CORNER OF THE TEXAS SOUTH PLAINS AND NORTHEAST NEW MEXICO INTO SOUTHEAST COLORADO. STRONGEST STORMS WERE NORTHWEST AND SOUTHEAST OF KEYES OKLAHOMA... SOUTHWEST OF DALHART...NORTHWEST OF GROOM AND ON THE TEXAS...NEW MEXICO STATE LINE EAST OF SAN JON NEW MEXICO. IN THE TEXAS SOUTH PLAINS... THE STORMS WERE LOCATED FROM AMHERST TO WHITEFACE. NO MOVEMENT WAS DETERMINED AT THIS TIME. PEOPLE IN AND AROUND THESE STORMS CAN EXPECT DANGEROUS LIGHTNING... GUSTY WINDS AND BRIEF RAINFALL. STAY TUNED FOR LATER STATEMENTS.
Special weather statement, Aug 18, 4:53 PM CDT, 3 hours 49 minutes before
TXZ001>012-COZ015>017-NMZ005-009-013-OKZ001>004-009-014-021- KSZ003-006-182245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE AMARILLO TX 450 PM CDT SAT AUG 18 1990 ...STRONG THUNDERSTORMS ACROSS PARTS OF EAST NEW MEXICO...THE TEXAS PANHANDLE...AND THE OKLAHOMA PANHANDLE LATE THIS AFTERNOON... AT 435 PM CDT...RADAR SHOWED NUMEROUS THUNDERSTORMS ACROSS THE TEXAS AND OKLAHOMA PANHANDLES...EAST NEW MEXICO AND THE NORTHWEST CORNER OF THE TEXAS SOUTH PLAINS. THE STRONGEST THUNDERSTORMS WERE NEAR PAMPA IN THE TEXAS PANHANDLE... BETWEEN BROADVIEW AND SAN JON IN EAST NEW MEXICO...AND NEAR KERRICK IN THE OKLAHOMA PANHANDLE. MOVEMENT OF THESE THUNDERSTORMS WAS NORTHEAST AT 15 MILES AN HOUR. PEOPLE IN AND AROUND THESE STORMS CAN EXPECT HEAVY RAINFALL... SMALL HAIL...GUSTY WINDS...AND DANGEROUS LIGHTNING. STAY TUNED TO NOAA WEATHER RADIO OR COMMERCIAL TELEVISION OR RADIO FOR LATER STATEMENTS AND POSSIBLE WARNHINGS.
Local storm report, Aug 18, 6:05 PM CDT, 2 hours 37 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO, TX
604 PM CDT SAT AUG 18 1990
1758 CDT (1628 CST)...UP TO QUARTER SIZE HAIL IN WHITEDEER TX. SPOTTER
NO REPORTS.
WSO AMA
GHLocal storm report, Aug 18, 6:05 PM CDT, 2 hours 37 minutes before
STORM REPORT CORRECTED NATIONAL WEATHER SERVICE AMARILLO, TX 605 PM CDT SAT AUG 18 1990 1758 CDT (1628 CST)...UP TO QUARTER SIZE HAIL IN WHITEDEER TX. SPOTTER
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:03 PM CDT | Severe Thunderstorm Warning | AMA | Hansford | 57 min |
| Aug 18, 7:07 PM CDT | Flash Flood Warning | AMA | Randall | 2 hr |
| Aug 18, 7:40 PM CDT | Severe Thunderstorm Warning | AMA | Moore | 65 min |
| Aug 18, 7:47 PM CDT | Severe Thunderstorm Warning | AMA | Gray | 58 min |
| Aug 18, 8:03 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Sherman | 57 min |
| Aug 18, 8:24 PM CDT | Tornado Warning | AMA | Moore | 36 min |
| Aug 18, 8:42 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb | 63 min |
| Aug 18, 9:38 PM CDT | Severe Thunderstorm Warning | AMA | Briscoe | 67 min |
Nearby
Severe Thunderstorm Warnings in Texas, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.