Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 97, NWS Midland/Odessa, TX
NWS Midland/Odessa, TX issued this severe thunderstorm warning at May 21, 1999, 6:13 PM CDT for Brewster County, Pecos County, Texas. It was in force for 62 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
- May 21, 1999, 6:13 PM CDT (23:13 UTC)
- Expired
- May 21, 1999, 7:15 PM CDT
- In force
- 62 min
- Issued by
- NWS Midland/Odessa, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Brewster County, TX, Pecos County, TX
The radar
The Midland/Odessa radar (KMAF), 198 km from the middle of the area, began a volume at 23:16 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 |
|---|---|---|---|
| May 21, 6:54 PM CDT | Hail 1.75 | Castolon, TX | Reported by a Ranger at Big Bend National Park. |
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 nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 11.2 hours before the alert went out and 199 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
- 686 J/kg
- Mixed-layer CIN
- -404 J/kg
- Mixed-layer LCL
- 1505 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 186 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.
NWS Midland/Odessa, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 1:30 PM CDT, 4 hours 43 minutes earlier.
Area forecast discussion, May 21, 1:30 PM CDT, 4 hours 43 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIDLAND TX 130 PM CDT (1230 PM MDT) FRI MAY 21 1999 SPC HAS SLIGHT RISK FOR NORTHERN PERMIAN BASIN/SOUTHEAST NM AS FRONTAL BOUNDARY COULD BECOME THE FOCUS FOR SOME AFTERNOON THUNDERSTORMS. FRONT CURRENTLY RUNNING FROM NEAR KSPS... TO NORTH OF KMAF AND KINK. HOWEVER... KMAF SITTING ON A 0.21 INCH PRECIP TOTAL SINCE APRIL 1... SO IT IS HARD TO GET TOO EXCITED ABOUT RAIN. WILL PROBABLY INCLUDE SOME LOW POPS FOR THE NORTH. UPPER RIDGE STAYS OVER THE AREA THROUGH 48 HRS WITH CUT OFF LOW SPINNING OVER SOUTHERN CALIFORNIA. DO NOT SEE MUCH CHANCE OF RAIN UNTIL THE LOW COMES EASTWARD... MRF BRINGS IN INTO THE AREA LATE TUESDAY. PLENTY OF MOISTURE TO WORK WITH... BUT HAVE TO OVERCOME THE CAP. DRYLINE PACKED AGAINST THE HIGHER ELEVATIONS OUT WEST... NOT EXPECTED TO MOVE MUCH TODAY... COULD SEE SOMETHING GO UP IN THE DAVIS MOUNTAINS DURING THE LATE AFTERNOON/EARLY EVENING. DO NOT AGREE WITH GUIDANCE NUMBERS... EXPECT ABOVE NORMAL TEMPS TO CONTINUE THROUGH THE PERIOD. MAF 66/93/66/94 0000 CNM 61/91/62/94 1000 MRF 53/84/55/86 1000 P07 68/91/67/92 0000 72
In the hours before
Special weather statement, May 21, 12:28 PM CDT, 5 hours 45 minutes before
NMZ027>029-TXZ045>048-050>052-057>063-067>070-074-075-079>082-220500- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE MIDLAND-ODESSA TX 630 AM CDT FRI MAY 21 1999 THIS OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN WEST TEXAS: ANDREWS CULBERSON GLASSCOCK MARTIN REAGAN UPTON BORDEN DAWSON HOWARD MIDLAND REEVES WARD BREWSTER ECTOR JEFF DAVIS PECOS SCURRY WINKLER CRANE GAINES LOVING PRESIDIO TERRELL AND IN SOUTHEAST NEW MEXICO: EDDY LEA SYNOPSIS: A FRONTAL BOUNDARY REMAINS NEARLY STATIONARY ACROSS THE NORTHERN PORTIONS OF THE PERMIAN BASIN EARLY THIS AFTERNOON. ISOLATED THUNDERSTORM DEVELOPMENT MAY OCCUR ALONG AND TO THE NORTH OF THIS BOUNDARY LATE THIS AFTERNOON OR THIS EVENING...GENERALLY ALONG AND NORTH OF A CARLSBAD TO ANDREWS TO BIG SPRING LINE. THE AIRMASS WILL BE MODERATELY MOIST AND UNSTABLE ACROSS THIS AREA. STORMS THAT DO DEVELOP MAY BECOME SEVERE WITH THE POSSIBILITY OF LARGE HAIL. DUE TO THE ISOLATED NATURE OF THESE THUNDERSTORMS...SPOTTER ACTIVATION IS NOT ANTICIPATED. FOR THE WEST CpENTRAL TEXAS OUTLOOK SEE THE PRODUCT LBBSPSSJT ISSUED BY NWS SAN ANGELO (WWUS35 KSJT).
Special weather statement, May 21, 12:29 PM CDT, 5 hours 44 minutes before
NMZ027>029-TXZ045>048-050>052-057>063-067>070-074-075-079>082-220500- THUNDERSTORM OUTLOOK...CORRECTED TIME NATIONAL WEATHER SERVICE MIDLAND-ODESSA TX 1229 PM CDT FRI MAY 21 1999 THIS OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN WEST TEXAS: ANDREWS CULBERSON GLASSCOCK MARTIN REAGAN UPTON BORDEN DAWSON HOWARD MIDLAND REEVES WARD BREWSTER ECTOR JEFF DAVIS PECOS SCURRY WINKLER CRANE GAINES LOVING PRESIDIO TERRELL AND IN SOUTHEAST NEW MEXICO: EDDY LEA SYNOPSIS: A FRONTAL BOUNDARY REMAINS NEARLY STATIONARY ACROSS THE NORTHERN PORTIONS OF THE PERMIAN BASIN EARLY THIS AFTERNOON. ISOLATED THUNDERSTORM DEVELOPMENT MAY OCCUR ALONG AND TO THE NORTH OF THIS BOUNDARY LATE THIS AFTERNOON OR THIS EVENING...GENERALLY ALONG AND NORTH OF A CARLSBAD TO ANDREWS TO BIG SPRING LINE. THE AIRMASS WILL BE MODERATELY MOIST AND UNSTABLE ACROSS THIS AREA. STORMS THAT DO DEVELOP MAY BECOME SEVERE WITH THE POSSIBILITY OF LARGE HAIL. DUE TO THE ISOLATED NATURE OF THESE THUNDERSTORMS...SPOTTER ACTIVATION IS NOT ANTICIPATED. FOR THE WEST CENTRAL TEXAS OUTLOOK SEE THE PRODUCT LBBSPSSJT ISSUED BY NWS SAN ANGELO (WWUS35 KSJT).
The office that day
Everything else NWS Midland/Odessa, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 4:31 PM CDT | Flash Flood Warning | MAF | Jeff Davis | 119 min |
| May 21, 4:49 PM CDT | Severe Thunderstorm Warning | MAF | Jeff Davis | 56 min |
| May 21, 5:15 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 60 min |
| May 21, 6:39 PM CDT | Flash Flood Warning | MAF | Brewster | 2 hr |
| May 21, 6:58 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 47 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning in 1999
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.