Alert archive / Texas / Flash Flood Watches in 2015

Flash Flood Watch 6, NWS Brownsville, TX

May 15, 20156 counties in Texas

NWS Brownsville, TX issued this flash flood watch at May 15, 2015, 12:19 PM CDT for 6 counties in Texas. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: May 15, 2015, 12:19 PM CDT (17:19 UTC)
Expired: May 15, 2015, 7:00 PM CDT
In force: 7 hr
Issued by: NWS Brownsville, TX
Flood severity: None

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

The radar

The Corpus Christi radar (KCRP), 141 km from the middle of the area, began a volume at 17:21 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, 5.3 hours before the alert went out and 146 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: 2417 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.2

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 Brownsville, TX wrote its last area forecast discussion before this flash flood watch went out at May 15, 5:47 AM CDT, 6 hours 32 minutes earlier.

Area forecast discussion, May 15, 5:47 AM CDT, 6 hours 32 minutes before

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Hazardous weather outlook, May 15, 4:17 AM CDT, 8 hours 2 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
May 15, 11:54 AM CDT	Areal Flood Advisory	BRO	Brooks	3 hr
May 15, 12:57 PM CDT	Special Weather Statement	BRO	Brooks	48 min
May 15, 1:17 PM CDT	Flash Flood Warning	BRO	Brooks	118 min
May 15, 1:26 PM CDT	Special Weather Statement	BRO	Kleberg	49 min
May 15, 1:43 PM CDT	Special Marine Warning	BRO		92 min
May 15, 1:57 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Kenedy	48 min
May 15, 2:06 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Kenedy, Willacy	114 min
May 15, 2:19 PM CDT	Tornado Warning	BRO	Hidalgo, Kenedy, Willacy	26 min
May 15, 2:30 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Kenedy	30 min
May 15, 2:35 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo	25 min
May 15, 2:39 PM CDT	Flash Flood Warning	BRO	Hidalgo, Kenedy	111 min
May 15, 2:57 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Kenedy	33 min
May 15, 2:58 PM CDT	Special Marine Warning	BRO		92 min
May 15, 2:58 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo	32 min
May 15, 3:03 PM CDT	Tornado Warning	BRO	Kenedy	42 min
May 15, 3:15 PM CDT	Flash Flood Warning	BRO	Brooks, Hidalgo, Kenedy, Willacy	2 hr
May 15, 4:00 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	30 min
May 15, 4:25 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Willacy	50 min
May 15, 4:48 PM CDT	Flash Flood Warning	BRO	Hidalgo	2 hr
May 15, 5:20 PM CDT	Areal Flood Warning	BRO	Hidalgo, Kenedy, Willacy	6 hr
May 15, 5:28 PM CDT	Special Weather Statement	BRO	Cameron, Willacy	47 min
May 15, 5:58 PM CDT	Areal Flood Advisory	BRO	Willacy	2 hr
May 15, 6:02 PM CDT	Special Marine Warning	BRO		118 min
May 15, 6:29 PM CDT	Special Weather Statement	BRO	Willacy	46 min
May 15, 6:37 PM CDT	Areal Flood Advisory	BRO	Hidalgo	113 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.