Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 2, NWS Midland/Odessa, TX

April 13, 2017Terrell County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Apr 13, 2017, 5:37 AM CDT for Terrell County, Texas. It was in force for 3 hr. 1 report 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: Apr 13, 2017, 5:37 AM CDT (10:37 UTC)
Expired: Apr 13, 2017, 8:30 AM CDT
In force: 3 hr
Issued by: NWS Midland/Odessa, TX
Area: Storm-based polygon
Flood severity: None

County Terrell County, TX

The radar

The San Angelo radar (KSJT), 165 km from the middle of the area, began a volume at 10:37 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
Apr 13, 6:00 AM CDT	FLASH FLOOD	15 S Sheffield, TX	REPORTED MANY SMALL FM ROADS AND LOW WATER CROSSINGS INUNDATED WITH WATER NEAR THE TERRELL GAS PLANT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Del Rio, TX (KDLF), launched 00:00Z, 10.6 hours before the alert went out and 143 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 47 J/kg
Mixed-layer CIN: -363 J/kg
Mixed-layer LCL: 933 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

258 
WGUS54 KMAF 131037
FFWMAF
TXC443-131330-
/O.NEW.KMAF.FF.W.0002.170413T1037Z-170413T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Midland/Odessa TX
537 AM CDT THU APR 13 2017

The National Weather Service in Midland has issued a

* Flash Flood Warning for...
  Northeastern Terrell County in southwestern Texas...

* Until 830 AM CDT

* At 536 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Two to three inches of rain 
  have already fallen. Flash flooding is expected to begin shortly.

Additional rainfall amounts of one to two inches are possible in the 
warned area.

This includes the low water crossing at INDEPENDENCE CREEK and State 
Highway 349.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3049 10169 3047 10169 3046 10170 3047 10173
      3044 10172 3042 10174 3040 10170 3037 10168
      3034 10169 3033 10174 3029 10176 3014 10176
      3005 10201 3020 10212 3039 10205 3054 10166

$$

67

1 follow-up statement

345 
WGUS74 KMAF 131142
FFSMAF

Flash Flood Statement
National Weather Service Midland/Odessa TX
642 AM CDT THU APR 13 2017

TXC443-131330-
/O.CON.KMAF.FF.W.0002.000000T0000Z-170413T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Terrell TX-
642 AM CDT THU APR 13 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 AM CDT FOR
NORTHEASTERN TERRELL COUNTY...

At 639 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to three inches of rain have already 
fallen. Therefore the warning remains in effect.

This includes the low water crossing at Independence Creek and state 
Highway 349.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3049 10169 3047 10169 3046 10170 3047 10173
      3044 10172 3042 10174 3040 10170 3037 10168
      3034 10169 3033 10174 3029 10176 3014 10176
      3005 10201 3020 10212 3039 10205 3054 10166

$$

67

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 12, 7:13 PM CDT	Special Weather Statement	MAF	Ward	47 min
Apr 12, 7:15 PM CDT	Severe Thunderstorm Warning	MAF	Reeves	45 min
Apr 12, 7:18 PM CDT	Severe Thunderstorm Warning	MAF	Presidio	42 min
Apr 12, 7:35 PM CDT	Severe Thunderstorm Warning	MAF	Jeff Davis, Reeves	40 min
Apr 12, 8:13 PM CDT	Special Weather Statement	MAF		47 min
Apr 12, 8:15 PM CDT	Special Weather Statement	MAF	Reeves	45 min
Apr 12, 8:22 PM CDT	Special Weather Statement	MAF	Reeves	38 min
Apr 12, 8:44 PM CDT	Tornado Warning	MAF	Andrews	31 min
Apr 12, 8:45 PM CDT	Special Weather Statement	MAF	Ward	45 min
Apr 12, 8:47 PM CDT	Special Weather Statement	MAF	Reeves	43 min
Apr 12, 9:01 PM CDT	Special Weather Statement	MAF		44 min
Apr 12, 9:05 PM CDT	Areal Flood Advisory	MAF	Ward, Winkler	3 hr
Apr 12, 9:08 PM CDT	Special Weather Statement	MAF	Jeff Davis	52 min
Apr 12, 9:09 PM CDT	Severe Thunderstorm Warning	MAF	Andrews, Gaines	36 min
Apr 12, 9:19 PM CDT	Special Weather Statement	MAF	Ward	41 min
Apr 12, 9:42 PM CDT	Severe Thunderstorm Warning	MAF	Andrews, Ector, Gaines, Martin	48 min
Apr 12, 10:02 PM CDT	Areal Flood Advisory	MAF	Ector, Midland	3 hr
Apr 12, 10:28 PM CDT	Special Weather Statement	MAF		47 min
Apr 12, 10:52 PM CDT	Areal Flood Advisory	MAF	Midland	3 hr
Apr 12, 11:18 PM CDT	Areal Flood Advisory	MAF	Andrews, Dawson, Gaines, Martin	3 hr
Apr 12, 11:50 PM CDT	Special Weather Statement	MAF	Jeff Davis	40 min
Apr 13, 12:26 AM CDT	Severe Thunderstorm Warning	MAF	Jeff Davis	64 min
Apr 13, 12:31 AM CDT	Special Weather Statement	MAF	Jeff Davis	44 min
Apr 13, 12:39 AM CDT	Severe Thunderstorm Warning	MAF	Jeff Davis, Presidio	51 min
Apr 13, 1:08 AM CDT	Special Weather Statement	MAF	Jeff Davis	52 min
Apr 13, 1:09 AM CDT	Areal Flood Advisory	MAF	Jeff Davis	3 hr
Apr 13, 1:29 AM CDT	Special Weather Statement	MAF	Jeff Davis	46 min
Apr 13, 2:14 AM CDT	Special Weather Statement	MAF	Jeff Davis	46 min
Apr 13, 2:35 AM CDT	Severe Thunderstorm Warning	MAF	Presidio	40 min
Apr 13, 4:17 AM CDT	Special Weather Statement	MAF	Terrell	58 min
Apr 13, 4:46 AM CDT	Areal Flood Advisory	MAF	Terrell	3 hr

Nearby

Flash Flood Warnings in Texas, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.