Alert archive / Texas / Flash Flood Watches in 2016

Flash Flood Watch 2, NWS San Angelo, TX

May 18, 201616 counties in Texas

NWS San Angelo, TX issued this flash flood watch at May 18, 2016, 3:19 PM CDT for 16 counties in Texas. It took effect at May 18, 2016, 7:00 PM CDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: May 18, 2016, 3:19 PM CDT (20:19 UTC)
In effect from: May 18, 2016, 7:00 PM CDT
Expired: May 19, 2016, 8:45 AM CDT
In force: 14 hr
Issued by: NWS San Angelo, TX
Flood severity: None

Counties Brown County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Crockett County, TX, Irion County, TX, Kimble County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 45 km from the middle of the area, began a volume at 20:22 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, 8.3 hours before the alert went out and 219 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 719 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 San Angelo, TX wrote its last area forecast discussion before this flash flood watch went out at May 18, 12:48 PM CDT, 2 hours 31 minutes earlier.

Area forecast discussion, May 18, 12:48 PM CDT, 2 hours 31 minutes before

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Hazardous weather outlook, May 18, 4:36 AM CDT, 10 hours 43 minutes before

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In the hours before

Local storm report, May 18, 11:03 AM CDT, 4 hours 16 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:04 PM CDT	Flash Flood Warning	SJT	Menard, Schleicher	3 hr
May 17, 7:14 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Sutton	61 min
May 17, 7:22 PM CDT	Special Weather Statement	SJT	Sutton	38 min
May 17, 7:26 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	39 min
May 17, 7:47 PM CDT	Special Weather Statement	SJT	Menard	28 min
May 17, 8:11 PM CDT	Severe Thunderstorm Warning	SJT	Kimble	64 min
May 17, 8:18 PM CDT	Areal Flood Advisory	SJT	Kimble	3 hr
May 17, 8:50 PM CDT	Flash Flood Warning	SJT	Kimble	3 hr
May 17, 9:08 PM CDT	Special Weather Statement	SJT	Kimble	37 min
May 17, 9:39 PM CDT	Areal Flood Advisory	SJT	Kimble	3 hr
May 17, 11:09 PM CDT	River Flood Warning	SJT	Kimble	14 hr
May 18, 1:33 AM CDT	Special Weather Statement	SJT	Fisher	42 min
May 18, 5:45 AM CDT	Special Weather Statement	SJT	Tom Green	45 min
May 18, 6:54 AM CDT	Special Weather Statement	SJT	Crockett	51 min
May 18, 7:45 AM CDT	Special Weather Statement	SJT	Irion	45 min

Nearby

Flash Flood Watches in Texas, 2016 Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.