Alert archive / Texas / Flash Flood Watches in 2015

Flash Flood Watch 9, NWS Brownsville, TX

May 30, 20158 counties in Texas

NWS Brownsville, TX issued this flash flood watch at May 30, 2015, 8:58 AM CDT for 8 counties in Texas. It took effect at May 30, 2015, 3:00 PM CDT. It was in force for 27 hr.

The area

The counties it named.

The facts

Issued: May 30, 2015, 8:58 AM CDT (13:58 UTC)
In effect from: May 30, 2015, 3:00 PM CDT
Expired: May 31, 2015, 6:00 PM CDT
In force: 27 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 14:00 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, 2.0 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: 2806 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 596 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -45 m²/s²
0-3 km storm-relative helicity: -14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 30, 4:57 AM CDT, 4 hours 1 minute earlier.

Area forecast discussion, May 30, 4:57 AM CDT, 4 hours 1 minute before

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Hazardous weather outlook, May 30, 4:51 AM CDT, 4 hours 7 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 30, 3:24 PM CDT	Areal Flood Advisory	BRO	Hidalgo	111 min
May 30, 3:30 PM CDT	Special Weather Statement	BRO	Hidalgo	30 min
May 30, 3:41 PM CDT	Special Weather Statement	BRO	Zapata	34 min
May 30, 3:44 PM CDT	Special Weather Statement	BRO	Brooks	31 min
May 30, 4:01 PM CDT	Areal Flood Advisory	BRO	Brooks, Jim Hogg	119 min
May 30, 4:08 PM CDT	Areal Flood Advisory	BRO	Cameron	112 min
May 30, 4:29 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Starr	2 hr
May 30, 4:33 PM CDT	Special Weather Statement	BRO	Brooks	27 min
May 30, 4:43 PM CDT	Special Weather Statement	BRO	Jim Hogg	32 min
May 30, 4:44 PM CDT	Areal Flood Advisory	BRO	Zapata	2 hr
May 30, 4:49 PM CDT	Areal Flood Advisory	BRO	Brooks, Jim Hogg	3 hr
May 30, 4:58 PM CDT	Special Weather Statement	BRO	Brooks	32 min
May 30, 5:00 PM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg, Zapata	30 min
May 30, 5:16 PM CDT	Flash Flood Warning	BRO	Jim Hogg, Zapata	119 min
May 30, 5:19 PM CDT	Flash Flood Warning	BRO	Brooks	116 min
May 30, 5:24 PM CDT	Special Weather Statement	BRO	Brooks	51 min
May 30, 5:28 PM CDT	Special Weather Statement	BRO	Zapata	47 min
May 30, 5:48 PM CDT	Areal Flood Advisory	BRO	Jim Hogg, Starr, Zapata	117 min
May 30, 6:09 PM CDT	Special Weather Statement	BRO	Starr	51 min
May 30, 6:12 PM CDT	Special Weather Statement	BRO	Hidalgo	48 min
May 30, 6:28 PM CDT	Flash Flood Warning	BRO	Starr	3 hr
May 30, 6:32 PM CDT	Special Weather Statement	BRO	Hidalgo	43 min
May 30, 6:35 PM CDT	Flash Flood Warning	BRO	Hidalgo	115 min
May 30, 6:58 PM CDT	Special Weather Statement	BRO	Hidalgo	47 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.