Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 19, NWS San Angelo, TX

July 3, 2021Fisher County, Texas

NWS San Angelo, TX issued this flash flood warning at Jul 3, 2021, 4:17 AM CDT for Fisher County, Texas. It was in force for 118 min. 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 3, 2021, 4:17 AM CDT (09:17 UTC)
Expired
Jul 3, 2021, 6:15 AM CDT
In force
118 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Flood severity
None

County Fisher County, TX

The radar

The Dyess AFB radar (KDYX), 121 km from the middle of the area, began a volume at 09:18 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, 9.3 hours before the alert went out and 197 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.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2021-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1700 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2021-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1700 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1302 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

209 
WGUS54 KSJT 030917
FFWSJT
TXC151-031115-
/O.NEW.KSJT.FF.W.0019.210703T0917Z-210703T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
417 AM CDT Sat Jul 3 2021

The National Weather Service in San Angelo has issued a

* Flash Flood Warning for...
  Northwestern Fisher County in west central Texas...

* Until 615 AM CDT.

* At 415 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain continue across northwest Fisher County near Rotan. Up 
  to 2 inches of rain have fallen with an additional rainfall 
  amounts up to 1 inch possible. 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...
  Rotan, Hobbs and Us-180 Near The Fisher-Scurry County Line.

This includes the following Low Water Crossings...
SH 70 crossing The Draw Southeast of Rotan, US 180 crossing 7 miles 
west of Roby, FM 611 crossing 1 mile west of Rotan and FM 611 
crossing 7 miles west of Rotan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3296 10034 3275 10040 3271 10066 3296 10065
      3296 10063 3296 10062 3296 10052 3296 10050
      3296 10048 3296 10047 3296 10044 3296 10043
      3296 10041 3296 10040 3296 10038 3296 10037
      3296 10036 3296 10035

FLASH FLOOD...RADAR INDICATED

$$

7

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 2:22 AM CDTFlash Flood WarningSJTFisher, Nolan113 min
Jul 3, 3:33 AM CDTAreal Flood AdvisorySJTCoke, Sterling3 hr
Jul 3, 3:42 AM CDTAreal Flood AdvisorySJTCoke, Fisher, Jones, Nolan, Runnels, Taylor2 hr
Jul 3, 3:54 AM CDTFlash Flood WarningSJTSterling111 min
Jul 3, 4:33 AM CDTAreal Flood AdvisorySJTCoke, Irion, Runnels, Sterling, Tom Green117 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.