Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 20, NWS Midland/Odessa, TX
NWS Midland/Odessa, TX issued this flash flood warning at May 21, 1999, 4:31 PM CDT for Jeff Davis County, Texas. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- May 21, 1999, 4:31 PM CDT (21:31 UTC)
- Expired
- May 21, 1999, 6:30 PM CDT
- In force
- 119 min
- Issued by
- NWS Midland/Odessa, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Jeff Davis County, TX
The radar
The Midland/Odessa radar (KMAF), 229 km from the middle of the area, began a volume at 21:30 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.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 9.5 hours before the alert went out and 228 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
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMAF 212132
FFWMAF
TXC243-212330-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND-ODESSA TX
431 PM CDT FRI MAY 21 1999
THE MIDLAND-ODESSA NATIONAL WEATHER SERVICE OFFICE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
JEFF DAVIS COUNTY IN TEXAS
* UNTIL 630 PM CDT
* AT 430 PM CDT...WEATHER SERVICE DOPPLER RADAR DETECTED A
THUNDERSTORM WITH VERY HEAVY RAIN 18 MILES NORTHWEST OF FORT
DAVIS...MOVING SLOWLY EAST AT UNDER 5 MPH.
* SOME LOCATIONS AFFECTED BY THIS FLASH FLOOD WARNING INCLUDE...
FORT DAVIS
RADAR INDICATED AMOUNTS OF BETWEEN 1 TO 2 INCHES OF RAINFALL NEAR
THE JUNCTION OF TX 118 AND TX 166. ARROYOS AND CREEKS MAY EXPERIENCE
RAPID FLASH FLOODING. MOTORISTS ARE ALSO URGED TO EXERCISE CAUTION.
HIKERS SHOULD NOT ATTEMPT TO CROSS ANY FLOODED WASHES. A FOOT OF
SWIFTLY FLOWING WATER CAN EASILY SWEEP YOU OFF YOUR FEET. MOVE TO
HIGHER GROUND AND WAIT FOR THE FLOODWATERS TO RECEDE.
LAT...LON 3085 10442 3059 10433 3042 10388 3064 10370
3109 10410What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at May 21, 1:30 PM CDT, 3 hours 1 minute earlier.
Area forecast discussion, May 21, 1:30 PM CDT, 3 hours 1 minute 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, 4 hours 3 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, 4 hours 2 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, 4:49 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, 6:13 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 62 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
Flash Flood Warnings in Texas, 1999Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.