Alert archive / Texas / Flash Flood Warnings in 2016

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

May 30, 2016Bandera County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 30, 2016, 7:24 AM CDT for Bandera 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: May 30, 2016, 7:24 AM CDT (12:24 UTC)
Expired: May 30, 2016, 10:15 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Flood severity: None

County Bandera County, TX

The radar

The Austin/San Antonio radar (KEWX), 113 km from the middle of the area, began a volume at 12:25 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
May 30, 7:40 AM CDT	FLASH FLOOD	2 Se Bandera, TX	WATER OVER THE ROADWAY AT WHARTONS DOCK ROAD AT SAN JULIAN CREEK... ALSO SEVERAL OTHER REPORTS OF ROADS CLOSED AROUND BANDERA DUE TO HEAVY RAINS
May 30, 9:00 AM CDT	FLASH FLOOD	Medina, TX	PHOTO SHOWING WATER FROM THE MEDINA RIVER FLOWING OVER THE ROADWAY AT THE PATTERSON STREET CROSSING IN MEDINA

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 12:00Z, 0.4 hours before the alert went out and 165 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: 2487 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 7.2

Open this sounding in Storm Lab

The text

As transmitted.

063 
WGUS54 KEWX 301224
FFWEWX
TXC019-301515-
/O.NEW.KEWX.FF.W.0045.160530T1224Z-160530T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
724 AM CDT MON MAY 30 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BANDERA COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 1015 AM CDT

* AT 720 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS MOST OF BANDERA COUNTY. UP TO TWO INCHES OF RAIN
  HAVE ALREADY FALLEN...WITH HIGHEST AMOUNTS INDICATED BY RADAR TO
  BE ALONG FM ROAD 337 ABOUT 5 TO 15 MILES WEST OF THE TOWN OF
  MEDINA. FLASH FLOODING MAY ALREADY BE OCCURRING OVER THIS LOCATION.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MEDINA...BANDERA...TARPLEY...VANDERPOOL...PIPE CREEK...LOST MAPLES STATE
  PARK...BANDERA FALLS AND LAKEHILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. 

STAY AWAY OR BE SWEPT AWAY. RIVER AND STREAM BANKS AND CULVERTS CAN
BECOME UNSTABLE AND UNSAFE.

&&

LAT...LON 2990 9918 2981 9898 2972 9887 2962 9898
      2963 9960 2990 9960

$$

MO

2 follow-up statements

563 
WGUS74 KEWX 301406
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
906 AM CDT MON MAY 30 2016

TXC019-301515-
/O.CON.KEWX.FF.W.0045.000000T0000Z-160530T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA TX-
906 AM CDT MON MAY 30 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT FOR
BANDERA COUNTY...

AT 902 AM CDT...LOCAL LAW ENFORCEMENT REPORTED THAT SEVERAL ROADS IN
BANDERA COUNTY HAVE WATER FLOWING OVER THEM.  SOME LOW WATER
CROSSING ARE FLOODED AFTER PORTIONS OF THE COUNTY RECEIVED 1 TO 3
INCHES OF RAIN THIS MORNING. CREEKS AND STREAMS ARE RUNNING HIGH AND
THE THREAT FOR HAZARDOUS DRIVING WILL CONTINUE THROUGH 1015 AM.
FLASH FLOODING WILL CONTINUE...TURN AROUND DONT DROWN.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MEDINA...BANDERA...TARPLEY...VANDERPOOL...PIPE CREEK...LOST MAPLES STATE
PARK...BANDERA FALLS AND LAKEHILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

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 2990 9918 2981 9898 2972 9887 2962 9898
      2963 9960 2990 9960

$$

YURA

855 
WGUS74 KEWX 301514
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1014 AM CDT MON MAY 30 2016

TXC019-301522-
/O.EXP.KEWX.FF.W.0045.000000T0000Z-160530T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA TX-
1014 AM CDT MON MAY 30 2016

...THE FLASH FLOOD WARNING FOR BANDERA COUNTY WILL EXPIRE AT 1015 AM
CDT...

FLOOD WATERS ARE NOW RECEDING. A FEW LOW WATER CROSSINGS WILL
CONTINUE TO POSE A MINOR THREAT THROUGH THE MORNING AND EARLY
AFTERNOON. PLEASE USE CAUTION WHILE DRIVING IN THE AREA TODAY.
PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. TURN AROUND
DONT DROWN.

LAT...LON 2990 9918 2981 9898 2972 9887 2962 9898
      2963 9960 2990 9960

$$

YURA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 3:15 AM CDT	Special Weather Statement	EWX	Burnet	45 min
May 30, 3:41 AM CDT	Special Weather Statement	EWX	Llano	49 min
May 30, 4:12 AM CDT	Severe Thunderstorm Warning	EWX	Llano	63 min
May 30, 4:44 AM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Gillespie	43 min
May 30, 5:03 AM CDT	Areal Flood Advisory	EWX	Llano	3 hr
May 30, 5:08 AM CDT	Special Weather Statement	EWX	Gillespie	52 min
May 30, 5:20 AM CDT	Special Weather Statement	EWX	Comal	40 min
May 30, 5:56 AM CDT	Areal Flood Advisory	EWX	Bandera, Blanco, Gillespie, Kendall, Kerr, Real	4 hr
May 30, 6:09 AM CDT	Special Weather Statement	EWX	Kerr	51 min
May 30, 7:01 AM CDT	Special Weather Statement	EWX	Wilson	59 min
May 30, 7:32 AM CDT	Areal Flood Advisory	EWX	Atascosa, Bexar, Medina	3 hr
May 30, 8:05 AM CDT	Special Weather Statement	EWX	Gonzales	40 min
May 30, 8:53 AM CDT	Special Weather Statement	EWX	DeWitt, Gonzales, Lavaca	67 min
May 30, 9:12 AM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Lavaca	63 min
May 30, 9:29 AM CDT	River Flood Warning	EWX	Llano	38 hr
May 30, 10:36 AM CDT	River Flood Warning	EWX	Bandera	19 hr

Nearby

Flash Flood Warnings in Texas, 2016 Every flash flood warning in 2016

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.