Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 8, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Apr 26, 1999, 3:35 AM CDT for Crockett County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 26, 1999, 3:35 AM CDT (08:35 UTC)
- Expired
- Apr 26, 1999, 6:40 AM CDT
- In force
- 3 hr
- Issued by
- NWS San Angelo, TX
- Area
- Whole counties
County Crockett County, TX
The radar
The San Angelo radar (KSJT), 113 km from the middle of the area, began a volume at 08:35 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 00:00Z, 8.6 hours before the alert went out and 156 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
- 16 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 2631 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 76 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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at Apr 26, 1:40 AM CDT, 1 hour 55 minutes earlier.
Area forecast discussion, Apr 26, 1:40 AM CDT, 1 hour 55 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 140 AM CDT TUE APR 26 1999 ZONAL FLOW TO BRING BENIGN WEATHER TO WC TX THROUGH WEDNESDAY. THEREAFTER...A DEEPENING LONGWAVE TROF OVER THE WESTERN U.S. SHOULD BRING A CHANCE OF RAIN TO THE AREA FROM EARLY THURSDAY INTO THE FIRST PART OF THE WEEKEND. PRIMARY FORECAST CHALLENGE IS TEMPERATURES. HAVE NO MAJOR DISAGREEMENTS WITH NGM FWC GUIDANCE. STILL SOME RESIDUAL SURFACE MOISTURE TO EVAPORATE. PRESSURE GRADIENT AND RESULTANT SURFACE WINDS SHOULD REMAIN LAX THROUGH THIS AFTERNOON. LEE-SIDE LOW LEVEL TROF DEVELOPMENT COMMENCES TONIGHT IN ADVANCE OF THE AFOREMENTIONED LONGWAVE UPPER TROF. MAX TEMPS SIMILAR OR SLIGHTLY WARMER WEDNESDAY...WITH INCREASED MIXING AND SLIGHT INCREASE IN 1000-500 MB THICKNESSES. ONLY MINOR CHANGES PLANNED FOR THE EXTENDED. ABI 087/058/089/062 0001 SJT 088/054/090/060 0001 JCT 089/056/090/062 0001 14 14
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 2:17 AM CDT | Severe Thunderstorm Warning | SJT | Irion | 63 min |
| Apr 26, 2:22 AM CDT | Severe Thunderstorm Warning | SJT | Crockett | 78 min |
| Apr 26, 2:47 AM CDT | Flash Flood Warning | SJT | Tom Green | 3 hr |
| Apr 26, 2:50 AM CDT | Severe Thunderstorm Warning | SJT | Tom Green | 75 min |
| Apr 26, 3:07 AM CDT | Tornado Warning | SJT | Crockett | 63 min |
| Apr 26, 3:17 AM CDT | Flash Flood Warning | SJT | Runnels | 3 hr |
| Apr 26, 4:04 AM CDT | Severe Thunderstorm Warning | SJT | Callahan, Coleman | 61 min |
| Apr 26, 4:06 AM CDT | Flash Flood Warning | SJT | Schleicher | 3 hr |
| Apr 26, 4:23 AM CDT | Flash Flood Warning | SJT | Coleman, Concho | 3 hr |
| Apr 26, 5:08 AM CDT | Severe Thunderstorm Warning | SJT | Brown | 62 min |
| Apr 26, 5:13 AM CDT | Flash Flood Warning | SJT | Brown, McCulloch, Menard | 3 hr |
| Apr 26, 5:13 AM CDT | Flash Flood Warning | SJT | Sutton | 3 hr |
| Apr 26, 5:49 AM CDT | Flash Flood Warning | SJT | Mason, San Saba | 3 hr |
| Apr 26, 5:49 AM CDT | Flash Flood Warning | SJT | Kimble | 3 hr |
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.