Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 2, NWS San Angelo, TX

April 1, 2017Runnels County, Texas

NWS San Angelo, TX issued this flash flood warning at Apr 1, 2017, 6:13 PM CDT for Runnels County, Texas. It was in force for 92 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
Apr 1, 2017, 6:13 PM CDT (23:13 UTC)
Expired
Apr 1, 2017, 7:45 PM CDT
In force
92 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Flood severity
None

County Runnels County, TX

The radar

The San Angelo radar (KSJT), 57 km from the middle of the area, began a volume at 23:17 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, 11.2 hours before the alert went out and 202 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 12:00Z on 2017-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2017-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -129 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2624 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
-129 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

640 
WGUS54 KSJT 012313
FFWSJT
TXC399-020045-
/O.NEW.KSJT.FF.W.0002.170401T2313Z-170402T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
613 PM CDT SAT APR 1 2017

The National Weather Service in San Angelo has issued a

* Flash Flood Warning for...
  Southwestern Runnels County in west central Texas...

* Until 745 PM CDT

* At 609 PM CDT, Doppler radar indicated a thunderstorm with very 
  heavy rain over the southwestern part of Runnels County. This 
  storm has shown little movement and is producing very heavy rain 
  over the same area. Rarar estimates that 3 to 4 inches of rain 
  have already occurred with this storm. An additional inch of 
  rain is expected through 715 PM. Flash flooding is expected to 
  begin shortly.

* Some locations that will experience flooding include...
  Miles and Ballinger Lake. 

This includes the following low water crossings ...
    County Road 264 crossing Valley Creek...
    River road crossing Indian Creek...    
    River road crossing Red Bank Creek...       
    County Road 293 crossing Valley Creek... 
    County Road 357 crossing Little Concho Creek.

Do not drive through these low water crossings or any other
low water crossing with water flowing across the roadway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3181 9997 3159 10012 3160 10021 3188 10009

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 4:21 PM CDTSpecial Weather StatementSJTFisher39 min
Apr 1, 4:25 PM CDTSevere Thunderstorm WarningSJTFisher, Nolan50 min
Apr 1, 5:07 PM CDTSevere Thunderstorm WarningSJTFisher, Nolan38 min
Apr 1, 5:29 PM CDTSpecial Weather StatementSJTRunnels31 min
Apr 1, 5:44 PM CDTSpecial Weather StatementSJTJones46 min
Apr 1, 5:56 PM CDTSevere Thunderstorm WarningSJTRunnels49 min
Apr 1, 6:09 PM CDTSpecial Weather StatementSJTNolan36 min
Apr 1, 6:30 PM CDTSpecial Weather StatementSJTRunnels30 min
Apr 1, 6:30 PM CDTTornado WarningSJTRunnels30 min
Apr 1, 6:51 PM CDTSpecial Weather StatementSJTFisher24 min
Apr 1, 6:56 PM CDTAreal Flood AdvisorySJTCoke, Runnels3 hr
Apr 1, 6:59 PM CDTSpecial Weather StatementSJTRunnels31 min

Nearby

Flash Flood Warnings in Texas, 2017Every flash flood warning in 2017

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.