Alert archive / Texas / Flash Flood Warnings in 2018

Flash Flood Warning 45, NWS Austin/San Antonio, TX

October 7, 2018Real County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 7, 2018, 9:16 PM CDT for Real 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: Oct 7, 2018, 9:16 PM CDT (02:16 UTC)
Expired: Oct 8, 2018, 12:45 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Flood severity: None

County Real County, TX

The radar

The Laughlin AFB radar (KDFX), 81 km from the middle of the area, began a volume at 02:18 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.

What was reported inside it

Time	Report	Where	Remark
Oct 7, 10:20 PM CDT	HEAVY RAIN 6	3 Se Prade Ranch, TX	REPORT OF AN ESTIMATED 6 INCHES OF RAIN HAVING FALLEN SUNDAY AFTERNOON AND EVENING ALONG THE WEST PRONG OF THE FRIO RIVER
Oct 7, 11:10 PM CDT	FLASH FLOOD	6 Nw Leakey, TX	FLOODING REPORTED ON FM 337 BETWEEN CAMP WOOD AND LEAKEY

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, 2.3 hours before the alert went out and 115 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: 1558 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted.

764 
WGUS54 KEWX 080216
FFWEWX
TXC385-080545-
/O.NEW.KEWX.FF.W.0045.181008T0216Z-181008T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
916 PM CDT SUN OCT 7 2018

The National Weather Service in Austin San Antonio has issued a

* Flash Flood Warning for...
  Central Real County in south central Texas...

* Until 1245 AM CDT

* At 916 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Over three inches of rain have 
  already fallen in the warning area and additional rainfall is 
  expected. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Leakey, Tuff and Prade Ranch. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 2996 9970 2963 9978 2963 9996 2997 9988
      3004 9977

$$

HUFFMAN

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 7, 7:05 PM CDT	Special Weather Statement	EWX	Real	40 min
Oct 7, 7:44 PM CDT	Severe Thunderstorm Warning	EWX	Kerr, Real	46 min
Oct 7, 8:28 PM CDT	Severe Thunderstorm Warning	EWX	Real	32 min
Oct 7, 8:39 PM CDT	Areal Flood Advisory	EWX	Real	3 hr
Oct 7, 8:58 PM CDT	Areal Flood Advisory	EWX	Uvalde	3 hr
Oct 7, 9:03 PM CDT	Tornado Warning	EWX	Kerr, Real	27 min
Oct 7, 9:30 PM CDT	Tornado Warning	EWX	Real	30 min
Oct 7, 9:32 PM CDT	Special Weather Statement	EWX	Real	58 min
Oct 7, 10:17 PM CDT	Areal Flood Advisory	EWX	Kerr	3 hr
Oct 7, 10:27 PM CDT	Tornado Warning	EWX	Edwards, Real, Uvalde	33 min
Oct 7, 10:38 PM CDT	Flash Flood Warning	EWX	Real, Uvalde	6 hr
Oct 7, 10:42 PM CDT	Flash Flood Warning	EWX	Kerr, Real	2 hr
Oct 7, 11:14 PM CDT	Areal Flood Advisory	EWX	Edwards, Real	3 hr
Oct 7, 11:45 PM CDT	Tornado Warning	EWX	Edwards	30 min
Oct 7, 11:53 PM CDT	Tornado Warning	EWX	Real	37 min
Oct 7, 11:54 PM CDT	Flash Flood Warning	EWX	Edwards, Real	3 hr
Oct 8, 12:43 AM CDT	Flash Flood Warning	EWX	Edwards, Kerr, Real	3 hr
Oct 8, 12:46 AM CDT	Areal Flood Advisory	EWX	Edwards, Real	3 hr
Oct 8, 1:47 AM CDT	Special Weather Statement	EWX	Edwards	28 min
Oct 8, 2:27 AM CDT	Flash Flood Warning	EWX	Edwards, Real	3 hr
Oct 8, 3:01 AM CDT	River Flood Warning	EWX	Uvalde	55 hr
Oct 8, 5:55 AM CDT	Flash Flood Warning	EWX	Edwards, Real	3 hr
Oct 8, 7:00 AM CDT	River Flood Warning	EWX	Uvalde	32 hr
Oct 8, 7:25 AM CDT	River Flood Warning	EWX	Uvalde	39 hr
Oct 8, 7:25 AM CDT	River Flood Warning	EWX	Uvalde	3 days
Oct 8, 11:11 AM CDT	River Flood Warning	EWX	Llano	57 hr
Oct 8, 11:53 AM CDT	Flash Flood Warning	EWX	Bandera, Kerr, Real	3 hr
Oct 8, 1:57 PM CDT	Areal Flood Advisory	EWX	Hays, Travis, Williamson	3 hr
Oct 8, 3:47 PM CDT	Flash Flood Warning	EWX	Kerr	3 hr
Oct 8, 5:07 PM CDT	Special Weather Statement	EWX	Val Verde	38 min
Oct 8, 6:19 PM CDT	River Flood Warning	EWX	Kerr	15 hr
Oct 8, 6:21 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	54 min
Oct 8, 6:42 PM CDT	Areal Flood Advisory	EWX	Kerr	5 hr

Nearby

Flash Flood Warnings in Texas, 2018 Every flash flood warning in 2018

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.