Alert archive / Texas / Flash Flood Watches in 2015

Flash Flood Watch 12, NWS Brownsville, TX

October 22, 20158 counties in Texas

NWS Brownsville, TX issued this flash flood watch at Oct 22, 2015, 2:57 PM CDT for 8 counties in Texas. It took effect at Oct 24, 2015, 12:00 AM CDT. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Oct 22, 2015, 2:57 PM CDT (19:57 UTC)
In effect from: Oct 24, 2015, 12:00 AM CDT
Expired: Oct 24, 2015, 7:53 PM CDT
In force: 20 hr
Issued by: NWS Brownsville, TX
Flood severity: None

Counties Brooks County, TX, Cameron County, TX, Hidalgo County, TX, Jim Hogg County, TX, Kenedy County, TX, Starr County, TX, Willacy County, TX, Zapata County, TX

The radar

The Brownsville radar (KBRO), 118 km from the middle of the area, began a volume at 19:59 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 8.0 hours before the alert went out and 120 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: 1374 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 705 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Brownsville, TX wrote its last area forecast discussion before this flash flood watch went out at Oct 22, 12:34 PM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, Oct 22, 12:34 PM CDT, 2 hours 23 minutes before

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Hazardous weather outlook, Oct 22, 5:05 AM CDT, 9 hours 52 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 21, 9:35 PM CDT	Small Craft Advisory for Winds	BRO		6 hr
Oct 22, 4:03 AM CDT	Small Craft Advisory	BRO		3 days
Oct 22, 11:29 AM CDT	Special Marine Warning	BRO		31 min
Oct 22, 2:43 PM CDT	Special Marine Warning	BRO		47 min
Oct 22, 3:58 PM CDT	Special Weather Statement	BRO	Willacy	62 min
Oct 22, 4:28 PM CDT	Areal Flood Advisory	BRO	Cameron, Willacy	92 min
Oct 22, 4:58 PM CDT	Flash Flood Warning	BRO	Cameron, Willacy	92 min
Oct 22, 5:06 PM CDT	Special Weather Statement	BRO	Willacy	54 min
Oct 22, 6:10 PM CDT	Special Weather Statement	BRO	Willacy	65 min
Oct 22, 6:21 PM CDT	Flash Flood Warning	BRO	Cameron, Willacy	84 min

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.