Alert archive / Texas / Flash Flood Watches in 2015

Flash Flood Watch 11, NWS Austin/San Antonio, TX

May 24, 201533 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood watch at May 24, 2015, 3:22 PM CDT for 33 counties in Texas. It took effect at May 25, 2015, 6:00 AM CDT. It was in force for 19 hr.

The area

The counties it named.

The facts

Issued: May 24, 2015, 3:22 PM CDT (20:22 UTC)
In effect from: May 25, 2015, 6:00 AM CDT
Expired: May 26, 2015, 1:00 AM CDT
In force: 19 hr
Issued by: NWS Austin/San Antonio, TX
Flood severity: None

All 33 counties

Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Edwards County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lavaca County, TX, Lee County, TX, Llano County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX

The radar

The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 20:23 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

Fort Worth, TX (KFWD), launched 12:00Z, 8.4 hours before the alert went out and 372 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: 290 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood watch went out at May 24, 3:22 PM CDT, 0 minutes earlier.

Area forecast discussion, May 24, 3:22 PM CDT, 0 minutes before

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Hazardous weather outlook, May 24, 9:45 AM CDT, 5 hours 37 minutes before

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In the hours before

Local storm report, May 24, 10:11 AM CDT, 5 hours 11 minutes before

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Local storm report, May 24, 10:55 AM CDT, 4 hours 27 minutes before

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Local storm report, May 24, 10:56 AM CDT, 4 hours 26 minutes before

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Local storm report, May 24, 10:59 AM CDT, 4 hours 23 minutes before

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Local storm report, May 24, 11:27 AM CDT, 3 hours 55 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:11 PM CDT	Special Weather Statement	EWX	Frio	49 min
May 23, 7:25 PM CDT	Flash Flood Warning	EWX	Frio, Zavala	3 hr
May 23, 7:27 PM CDT	River Flood Warning	EWX	Kerr	31 hr
May 23, 7:27 PM CDT	River Flood Warning	EWX	Kendall	19 hr
May 23, 7:39 PM CDT	River Flood Warning	EWX	Blanco	24 hr
May 23, 7:49 PM CDT	Special Weather Statement	EWX	Hays	26 min
May 23, 7:50 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Frio, Medina	40 min
May 23, 7:52 PM CDT	River Flood Warning	EWX	Uvalde	21 hr
May 23, 7:55 PM CDT	Tornado Warning	EWX	Bexar, Medina	35 min
May 23, 8:02 PM CDT	Flash Flood Warning	EWX	Frio	3 hr
May 23, 8:04 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Hays, Travis	41 min
May 23, 8:10 PM CDT	Flash Flood Warning	EWX	Bandera, Medina, Uvalde	3 hr
May 23, 8:13 PM CDT	River Flood Warning	EWX	Comal	22 hr
May 23, 8:13 PM CDT	River Flood Warning	EWX	Hays	55 hr
May 23, 8:13 PM CDT	River Flood Warning	EWX	Caldwell, Gonzales	4 days
May 23, 8:13 PM CDT	River Flood Warning	EWX	DeWitt	8 days
May 23, 8:13 PM CDT	Tornado Warning	EWX	Hays, Travis	32 min
May 23, 8:23 PM CDT	Flash Flood Warning	EWX	Atascosa, Bexar, Blanco, Burnet, Comal, Hays and 2 more	3 hr
May 23, 8:23 PM CDT	Tornado Warning	EWX	Bexar	37 min
May 23, 8:32 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Comal, Frio, Guadalupe	43 min
May 23, 8:40 PM CDT	River Flood Warning	EWX	Uvalde	32 hr
May 23, 8:40 PM CDT	River Flood Warning	EWX	Frio	6 days
May 23, 8:43 PM CDT	Tornado Warning	EWX	Travis	32 min
May 23, 8:45 PM CDT	Special Weather Statement	EWX	Hays	45 min
May 23, 8:55 PM CDT	Tornado Warning	EWX	Hays, Travis	35 min
May 23, 8:56 PM CDT	River Flood Warning	EWX	Kerr	26 hr
May 23, 9:07 PM CDT	Special Weather Statement	EWX	Atascosa, Caldwell, Guadalupe, Wilson	53 min
May 23, 9:16 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Hays, Travis	44 min
May 23, 9:18 PM CDT	Flash Flood Warning	EWX	Caldwell, Comal, Guadalupe, Wilson	3 hr
May 23, 9:32 PM CDT	Tornado Warning	EWX	Burnet, Williamson	31 min
May 23, 9:32 PM CDT	Tornado Warning	EWX	Burnet, Williamson	28 min
May 23, 9:39 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	51 min
May 23, 9:52 PM CDT	Flash Flood Warning	EWX	Bastrop, Lee	3 hr
May 23, 10:03 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Fayette, Gonzales, Lee, Williamson	42 min
May 23, 10:31 PM CDT	Flash Flood Warning	EWX	Frio, Medina, Uvalde, Zavala	3 hr
May 23, 10:35 PM CDT	Special Weather Statement	EWX	Atascosa, Gonzales	40 min
May 23, 10:47 PM CDT	Special Weather Statement	EWX	Fayette	28 min
May 23, 10:49 PM CDT	Areal Flood Warning	EWX	Bandera, Real	3 hr
May 23, 10:51 PM CDT	Areal Flood Advisory	EWX	Burnet	3 hr
May 23, 10:53 PM CDT	River Flood Warning	EWX	Travis	40 hr
May 23, 11:05 PM CDT	River Flood Warning	EWX	Uvalde	28 hr
May 23, 11:13 PM CDT	Flash Flood Warning	EWX	Blanco, Burnet, Comal, Hays, Travis, Williamson	3 hr
May 23, 11:14 PM CDT	Flash Flood Warning	EWX	Atascosa, Bexar	3 hr
May 23, 11:24 PM CDT	Flash Flood Warning Emergency	EWX	Hays	6 hr
May 23, 11:38 PM CDT	Flash Flood Warning	EWX	Edwards, Kinney, Real, Val Verde	3 hr
May 23, 11:57 PM CDT	River Flood Warning	EWX	Bexar	19 hr
May 23, 11:57 PM CDT	River Flood Warning	EWX	Bexar	44 hr
May 23, 11:57 PM CDT	River Flood Warning	EWX	Bexar	27 hr
May 23, 11:57 PM CDT	River Flood Warning	EWX	Bexar, Wilson	55 hr
May 24, 12:03 AM CDT	River Flood Warning	EWX	Medina	22 hr
May 24, 12:03 AM CDT	River Flood Warning	EWX	Medina	22 hr
May 24, 12:25 AM CDT	Flash Flood Warning	EWX	Bandera, Bexar, Blanco, Comal, Gillespie, Kendall and 3 more	6 hr
May 24, 12:55 AM CDT	Special Weather Statement	EWX	Bandera, Kerr	50 min
May 24, 1:25 AM CDT	Flash Flood Warning Emergency	EWX	Caldwell, Guadalupe, Hays	8 hr
May 24, 1:34 AM CDT	Flash Flood Warning	EWX	Frio, Medina, Uvalde, Zavala	3 hr
May 24, 2:09 AM CDT	Flash Flood Warning	EWX	Bastrop, Blanco, Burnet, Caldwell, Comal, Guadalupe and 4 more	5 hr
May 24, 2:23 AM CDT	River Flood Warning	EWX	Williamson	21 hr
May 24, 3:21 AM CDT	Flash Flood Warning	EWX	DeWitt, Fayette, Gonzales, Lavaca, Lee	4 hr
May 24, 5:11 AM CDT	Flash Flood Warning Emergency	EWX	Hays	3 hr
May 24, 7:29 AM CDT	River Flood Warning	EWX	Bexar, Guadalupe	20 hr
May 24, 7:29 AM CDT	River Flood Warning	EWX	Karnes	4 days
May 24, 8:06 AM CDT	Areal Flood Warning	EWX	Hays	6 hr
May 24, 8:32 AM CDT	River Flood Warning	EWX	Travis	21 hr
May 24, 8:47 AM CDT	Flash Flood Warning Emergency	EWX	Caldwell, Guadalupe, Hays	3 hr
May 24, 9:17 AM CDT	River Flood Warning	EWX	Caldwell, Gonzales	22 hr
May 24, 9:23 AM CDT	River Flood Warning	EWX	Gonzales	5 days
May 24, 9:56 AM CDT	River Flood Warning	EWX	Karnes	3 days
May 24, 11:38 AM CDT	Areal Flood Warning	EWX	Caldwell, Guadalupe, Hays	6 hr
May 24, 2:12 PM CDT	Areal Flood Warning	EWX	Hays	3 hr

Nearby

Flash Flood Watches in Texas, 2015 Every flash flood watch in 2015

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.