Alert archive / Texas / Flash Flood Warnings in 2002
Flash Flood Warning 41, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Jul 5, 2002, 4:01 AM CDT for Mason County, San Saba County, Texas. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 5, 2002, 4:01 AM CDT (09:01 UTC)
- Expired
- Jul 5, 2002, 8:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS San Angelo, TX
- Area
- Counties, with a storm outline in the text
Counties Mason County, TX, San Saba County, TX
The radar
The Austin/San Antonio radar (KEWX), 152 km from the middle of the area, began a volume at 09:02 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 9.0 hours before the alert went out and 237 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
- 2373 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KSJT 050901 FFWSJT TXC319-411-051300- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 400 AM CDT FRI JUL 5 2002 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WARNING FOR... SAN SABA COUNTY IN NORTH CENTRAL TEXAS MASON COUNTY IN SOUTH CENTRAL TEXAS * UNTIL 800 AM CDT * AT 351 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN NEAR LOYAL VALLEY...OR ABOUT 10 MILES SOUTHEAST OF MASON...MOVING NORTH AT 15 MPH. WIDESPREAD SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE ALSO INDICATED OVER MUCH OF SAN SABA COUNTY...ALSO MOVING NORTH AT 15 MPH. * RAINFALL TOTALING 1 TO 2 INCHES HAS FALLEN IN THE WARNED AREA...WITH ADDITIONAL RAINFALL UP TO 4 INCHES EXPECTED THROUGH 800 AM CDT. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. DO NOT ATTEMPT TO DRIVE AROUND BARRICADES. MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES. LAT...LON 3052 9931 3053 9898 3103 9851 3134 9888
3 follow-up statements
000 WGUS74 KSJT 051026 FFSSJT TXC411-051300- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 525 AM CDT FRI JUL 5 2002 ...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR SAN SABA COUNTY UNTIL 8 AM CDT... AT 515 AM CDT...RADAR ESTIMATED THAT 1 TO 2 INCHES OF RAIN HAVE FALLEN FROM CHAPPEL TO JUST EAST OF THE CITY OF SAN SABA SINCE 3 AM. 1/4 TO 3/4 INCHES OF RAIN HAS FALLEN OVER THE REST OF SAN SABA COUNTY. WIDESPREAD SHOWERS AND THUNDERSTORMS WILL PRODUCE RAINFALL AMOUNTS OF 1/4 TO 1/2 INCH PER HOUR. ADDITIONAL RAINFALL UP TO 1 1/2 INCHES ARE POSSIBLE THROUGH 8 AM CDT. THIS WILL CONTINUE TO PRODUCE FLOODING OF LOW WATER CROSSINGS AND POOR DRAINAGE AREAS.
000 WGUS74 KSJT 051034 FFSSJT TXC319-051300- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 533 AM CDT FRI JUL 5 2002 ...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR MASON COUNTY UNTIL 800 AM CDT... AT 530 AM CDT...DOPPLER RADAR ESTIMATED THAT 1 TO 2 INCHES OF RAIN HAVE FALLEN FROM JUST NORTH OF LOYAL VALLEY TO 5 MILES SOUTH OF FREDONIA SINCE 3 AM. THE EASTERN HALF OF MASON COUNTY CAN EXPECT ANOTHER 1/2 TO 1 1/2 INCHES OF RAIN THROUGH 8 AM...AS WIDESPREAD SHOWERS AND THUNDERSTORMS MOVE NORTH AT 15 MPH. THIS WILL CONTINUE TO PRODUCE FLOODING OF LOW WATER CROSSINGS AND POOR DRAINAGE AREAS.
000 WGUS74 KSJT 051205 FFSSJT TXC411-051300- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 700 AM CDT FRI JUL 5 2002 ...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR SAN SABA COUNTY UNTIL 800 AM CDT... AT 655 AM CDT...THE SAN SABA SHERIFF OFFICE REPORTED WATER FLOODING THE ROADWAY AT HIGHWAY 16 AND FM 1480. RAINFALL AMOUNTS OF 1/10 TO 1/4 INCH CAN BE EXPECTED ACROSS SAN SABA COUNTY THROUGH 8 AM. LOW WATER CROSSING AND LOW LYING AREAS MAY BE FILLED. DO NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH.
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 Jul 5, 2:49 AM CDT, 1 hour 12 minutes earlier.
Area forecast discussion, Jul 5, 2:49 AM CDT, 1 hour 12 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 249 AM CDT FRI JUL 5 2002 SO THIS IS JULY IN WEST TEXAS MORE RAIN IS ON THE WAY FOR THE PAST WEEK OUR ATTENTION HAS BEEN FOCUSED ON THE SHEAR AXIS AND ASSOCIATED RAINS THAT CAUSED THE TERRIBLE FLOODING TO OUR EAST. HAD BEEN THINKING THAT WOULD MOVE ACROSS OUR AREA AND PRODUCE RAINS...WHILE WE HAVE SEEN THE IMPACT OF THAT SYSTEM...TONIGHT A WHOLE NEW FOCUS HAS CHANGED OUR ATTENTION FURTHER WEST. AN UPPER LOW ALONG THE AZ/NM BORDER LOOKS LIKE IT WILL PLAY A ROLE IN OUR WEATHER FOR THE NEXT SEVERAL DAYS. THIS LOW HAS BEEN VERY EFFECTIVE AT PRODUCING THUNDERSTORM OVER NEW MEXICO. REMNANTS OF THE NEW MEXICO STORMS ARE TRAVERSING WEST TEXAS TONIGHT. IT APPEARS THAT WITH SUFFICIENT SURFACE INFLOW...THOSE STORMS SHOULD PUSH ACROSS OUR AREA DURING THE DAY...THEREFORE WILL PLACE RELATIVELY HIGH POPS TODAY. FOR THE NEXT COUPLE OF DAYS THE LOW WILL GRADUALLY MOVE EAST AND CONTINUE TO SPIT OUT PIECES OF ENERGY TO PRODUCE TSTRMS...EACH MOVING OUR WAY. THIS WILL REQUIRE POPS IN ALMOST EVERY FORECAST PERIOD...IT WILL ALSO PROVIDE THE ENERGY NEEDED TO KICK OUT THE PESKY SHEAR AXIS THAT HAS PERSISTED OVER SOUTH AND CENTRAL TEXAS. WITH MODELS SHOWING CONSISTENCY OVER THE PAST SEVERAL RUNS...THE LOW REMAINS IN THE SOUTHWEST...THE CENTER OF THE SFC HIGH TAKE HOLD WELL TO OUR NORTHWEST. THAT PLACES WCNTRL TX UNDER NORTHERLY FLOW ...SO ALAS CHANCES OF A COLD FRONT AND CONTINUED CONVECTION REMAIN IN OUR FUTURE. WITH ALL THAT SAID...WILL MAKE WHOLESALE CHANGES TO THE EXTENDED AND INCLUDE CHANCES OF RAIN THROUGHOUT AND COOLER THAN NORMAL TEMPS...YUP ITS NOT A TYPICAL JULY FORECAST...BUT IT MAY BE OUR CHANCE TO FILL SOME RESERVOIRS. MAY NOT BE A DROUGHT BUSTER...BUT IT AINT GOING TO HURT. AT THIS POINT...AM NOT SURE WHAT I WILL DO WITH ANY FLASH FLOOD WATCHES...OUR EASTERN COUNTIES HAVE BEEN HAMMERED OVER THE PAST COUPLE OF DAYS...HOWEVER NOT MUCH RAIN THERE OVERNIGHT...SINCE THE MAIN THREAT FOR HEAVIER RAIN TODAY APPEARS TO BE IN OUR WESTERN COUNTIES ...MAY HOLD OFF ON ANY WATCHES...BUT WILL RESERVE THE RIGHT TO MAKE LAST MINUTE CHANGES. OKAY..LATE DECISION...LOOKING AT THE RAIN MOVING INTO OUR SOUTHEAST COUNTIES...WILL GO WITH A FLASH FLOOD WATCH FOR SOUTHEAST. ABI 85/70/88/70 5432 SJT 86/70/88/70 6422 JCT 86/70/90/70 6322 .SJT...FLASH FLOOD WATCH TODAY FOR MASON...MENARD...KIMBLE...MCCULLOCH...SAN SABA...BROWN AND COLEMAN COUNTIES. 25
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 8:10 AM CDT | Flash Flood Warning | SJT | Kimble, Mason | 4 hr |
| Jul 5, 12:14 PM CDT | Flash Flood Warning | SJT | Kimble, Mason | 6 hr |
| Jul 5, 3:52 PM CDT | Flash Flood Warning | SJT | Tom Green | 113 min |
Nearby
Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002
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.