Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 20, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Jul 5, 2021, 10:58 AM CDT for Sterling 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 outline as issued.
The facts
- Issued
- Jul 5, 2021, 10:58 AM CDT (15:58 UTC)
- Expired
- Jul 5, 2021, 2:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Sterling County, TX
The radar
The San Angelo radar (KSJT), 66 km from the middle of the area, began a volume at 15:58 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, 4.0 hours before the alert went out and 124 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
- 1324 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1097 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
The text
As transmitted.
353
WGUS54 KSJT 051558
FFWSJT
TXC431-051900-
/O.NEW.KSJT.FF.W.0020.210705T1558Z-210705T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
1058 AM CDT Mon Jul 5 2021
The National Weather Service in San Angelo has issued a
* Flash Flood Warning for...
Northeastern Sterling County in west central Texas...
* Until 200 PM CDT.
* At 1054 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 5 inches of rain
have fallen. The expected rainfall rate is 1 to 3 inches in 1
hour. Flash flooding is ongoing or expected to begin shortly.
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...
Sterling City. Highway 163 north of Sterling City may become
flooded along with Highway 158 northeast of Sterling City.
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.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3177 10082 3177 10090 3181 10094 3185 10108
3195 10115 3209 10109 3208 10082 3184 10082
3183 10082 3182 10082 3181 10082 3180 10082
3178 10082
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 1 HOUR
$$
MKD1 follow-up statement
591
WGUS74 KSJT 051740
FFSSJT
Flash Flood Statement
National Weather Service San Angelo TX
1240 PM CDT Mon Jul 5 2021
TXC431-051900-
/O.CON.KSJT.FF.W.0020.000000T0000Z-210705T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sterling TX-
1240 PM CDT Mon Jul 5 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 2 PM CDT THIS
AFTERNOON FOR NORTHEASTERN STERLING COUNTY...
At 1236 PM CDT, Doppler radar estimated between 2.5 and 6.5 inches
of rain have fallen around 3 miles north and northeast of Sterling
City. While only light rain continues at 1235 PM...flooding of
Highways 163 and 158 north and northeast of Sterling City remains
likely until 2 PM.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Sterling City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3177 10082 3177 10090 3181 10094 3185 10108
3195 10115 3209 10109 3208 10082 3184 10082
3183 10082 3182 10082 3181 10082 3180 10082
3178 10082
FLASH FLOOD...RADAR INDICATED
$$
MKDThe office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:10 PM CDT | Areal Flood Advisory | SJT | Brown | 50 min |
| Jul 5, 8:40 AM CDT | Areal Flood Advisory | SJT | Kimble | 80 min |
| Jul 5, 9:53 AM CDT | Areal Flood Advisory | SJT | Coke, Nolan, Sterling | 112 min |
| Jul 5, 12:00 PM CDT | Areal Flood Advisory | SJT | Coke, Fisher, Haskell, Jones, Nolan, Runnels and 1 more | 3 hr |
| Jul 5, 2:01 PM CDT | Areal Flood Advisory | SJT | Brown, Callahan, Coleman, Shackelford, Throckmorton | 119 min |
| Jul 5, 2:21 PM CDT | Areal Flood Advisory | SJT | Kimble, McCulloch, Mason, Menard, Schleicher, Sutton | 2 hr |
| Jul 5, 2:38 PM CDT | Areal Flood Advisory | SJT | Crockett, Schleicher, Sutton | 2 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.