Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 23, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Jul 12, 2021, 3:19 PM CDT for Tom Green County, Texas. It was in force for 3 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 12, 2021, 3:19 PM CDT (20:19 UTC)
- Expired
- Jul 12, 2021, 6:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Tom Green County, TX
The radar
The San Angelo radar (KSJT), 7 km from the middle of the area, began a volume at 20:19 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 |
|---|---|---|---|
| Jul 12, 3:24 PM CDT | FLASH FLOOD | 2 Wsw San Angelo, TX | ROAD IS IMPASSABLE DUE TO FLOOD WATERS AT THE INTERSECTION OF WESTOVER TERRACE AND FOREST. |
| Jul 12, 3:24 PM CDT | FLASH FLOOD | 3 Wsw San Angelo, TX | LOTS OF FLOWING WATER ACROSS THE ROAD AT SUNSET DR NEXT TO THE POND. ROAD IS BLOCKED OFF WITH BARRICADES TO STOP MOTORISTS FROM CROSSING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 8.3 hours before the alert went out and 176 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
- 748 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -83 m²/s²
- 0-3 km storm-relative helicity
- -37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
427
WGUS54 KSJT 122019
FFWSJT
TXC451-122330-
/O.NEW.KSJT.FF.W.0023.210712T2019Z-210712T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
319 PM CDT Mon Jul 12 2021
The National Weather Service in San Angelo has issued a
* Flash Flood Warning for...
Central Tom Green County in west central Texas...
* Until 630 PM CDT.
* At 318 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
San Angelo, Christoval, Lake Nasworthy, Twin Buttes Reservoir,
O.c. Fisher Reservoir, San Angelo State Park and Grape Creek.
This includes the following Low Water Crossings...
Jackson From Knickerbocker to South Bryant, Southwest Blvd and Loop
306, Howard and Webster, College Hills and Millbrook, Parkwood and
Lindenwood, Sul Ross At Red Arroyo Crossing, Huntington and Sunset,
Huntington and Sunset, South Irving and Avenue P and South Irving
and Avenue R.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3118 10054 3158 10066 3160 10045 3116 10038
3116 10045
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
422 follow-up statements
483
WGUS74 KSJT 122053
FFSSJT
Flash Flood Statement
National Weather Service San Angelo TX
353 PM CDT Mon Jul 12 2021
TXC451-122330-
/O.CON.KSJT.FF.W.0023.000000T0000Z-210712T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tom Green TX-
353 PM CDT Mon Jul 12 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT THIS
EVENING FOR CENTRAL TOM GREEN COUNTY...
At 349 PM CDT, Doppler radar indicated that earlier thunderstorms
that produced heavy rain across the warned area have moved out of
the area. Rain gauges report that some locations received greater
than 1 and a half inches of rain. Radar estimates that some
locations may have received near 2 and a half inches of rain in an
hour. Although heavy rains have ended, runoff from earlier heavy
rain is likely ongoing, and some roads and low water crossings may
remain flooded, so the flash flood warning remains in effect.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
San Angelo, Christoval, Lake Nasworthy, Twin Buttes Reservoir,
O.c. Fisher Reservoir, San Angelo State Park and Grape Creek.
This includes the following Low Water Crossings...
Jackson From Knickerbocker to South Bryant, Southwest Blvd and Loop
306, Howard and Webster, College Hills and Millbrook, Parkwood and
Lindenwood, Sul Ross At Red Arroyo Crossing, Huntington and Sunset,
Huntington and Sunset, South Irving and Avenue P and South Irving
and Avenue R.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3118 10054 3158 10066 3160 10045 3116 10038
3116 10045
FLASH FLOOD...RADAR INDICATED
$$
SJH602
WGUS74 KSJT 122152
FFSSJT
Flash Flood Statement
National Weather Service San Angelo TX
452 PM CDT Mon Jul 12 2021
TXC451-122330-
/O.CON.KSJT.FF.W.0023.000000T0000Z-210712T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tom Green TX-
452 PM CDT Mon Jul 12 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT THIS
EVENING FOR CENTRAL TOM GREEN COUNTY...
At 446 PM CDT, Doppler radar indicated that heavy rain ended across
the warned area. However, the San Angelo Police Department reports
that some roads are still flooded, including low water crossings at
Sunset and College Hills. Also, runoff from the earlier heavy rains
may still be ongoing. Therefore, the Flash Flood Warning remains in
effect.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
San Angelo, Christoval, Lake Nasworthy, Twin Buttes Reservoir,
O.c. Fisher Reservoir, San Angelo State Park and Grape Creek.
This includes the following Low Water Crossings...
Jackson From Knickerbocker to South Bryant, Southwest Blvd and Loop
306, Howard and Webster, College Hills and Millbrook, Parkwood and
Lindenwood, Sul Ross At Red Arroyo Crossing, Huntington and Sunset,
Huntington and Sunset, South Irving and Avenue P and South Irving
and Avenue R.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3118 10054 3158 10066 3160 10045 3116 10038
3116 10045
FLASH FLOOD...RADAR INDICATED
$$
SJHThe office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:16 PM CDT | Areal Flood Advisory | SJT | Irion, Tom Green | 3 hr |
| Jul 11, 7:28 PM CDT | Areal Flood Advisory | SJT | Tom Green | 3 hr |
| Jul 11, 7:40 PM CDT | Flash Flood Warning | SJT | Tom Green | 3 hr |
| Jul 11, 7:57 PM CDT | Areal Flood Advisory | SJT | Brown, Coleman, Concho, McCulloch, Runnels, San Saba | 2 hr |
| Jul 11, 8:19 PM CDT | Special Weather Statement | SJT | Runnels | 41 min |
| Jul 11, 8:59 PM CDT | Areal Flood Advisory | SJT | Brown, Coke, Coleman, Runnels | 104 min |
| Jul 11, 9:18 PM CDT | Special Weather Statement | SJT | Brown | 42 min |
| Jul 12, 10:06 AM CDT | Areal Flood Advisory | SJT | San Saba | 3 hr |
| Jul 12, 11:31 AM CDT | Flash Flood Warning | SJT | San Saba | 3 hr |
| Jul 12, 12:36 PM CDT | Areal Flood Advisory | SJT | McCulloch, Mason | 114 min |
| Jul 12, 12:40 PM CDT | Special Weather Statement | SJT | Mason | 50 min |
| Jul 12, 1:30 PM CDT | Areal Flood Advisory | SJT | Concho, McCulloch, Menard | 2 hr |
| Jul 12, 2:23 PM CDT | Areal Flood Warning | SJT | San Saba | 3 hr |
| Jul 12, 3:08 PM CDT | Areal Flood Advisory | SJT | Tom Green | 3 hr |
| Jul 12, 3:42 PM CDT | Special Weather Statement | SJT | Nolan | 48 min |
| Jul 12, 3:46 PM CDT | Areal Flood Advisory | SJT | Coke, Nolan | 3 hr |
| Jul 12, 3:59 PM CDT | Special Weather Statement | SJT | Sterling | 46 min |
Nearby
Flash Flood Warnings in Texas, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.