Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Brownsville, TX

May 1, 2021Zapata County, Texas

NWS Brownsville, TX issued this special weather statement at May 1, 2021, 7:22 AM CDT for Zapata County, Texas. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 1, 2021, 7:22 AM CDT (12:22 UTC)
Expired: May 1, 2021, 8:00 AM CDT
In force: 38 min
Issued by: NWS Brownsville, TX

County Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 189 km from the middle of the area, began a volume at 12:22 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

Corpus Christi, TX (KCRP), launched 12:00Z, 0.4 hours before the alert went out and 200 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: 214 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 629 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 1, 5:48 AM CDT, 1 hour 34 minutes earlier.

Area forecast discussion, May 1, 5:48 AM CDT, 1 hour 34 minutes before

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Hazardous weather outlook, May 1, 4:26 AM CDT, 2 hours 56 minutes before

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In the hours before

Special weather statement, May 1, 7:15 AM CDT, 7 minutes before

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Special weather statement, May 1, 7:22 AM CDT, 0 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
Apr 30, 10:53 PM CDT	Special Weather Statement	BRO	Starr	52 min
Apr 30, 11:37 PM CDT	Special Weather Statement	BRO	Hidalgo	38 min
May 1, 3:49 AM CDT	Coastal Flood Statement	BRO	Kenedy	10 hr
May 1, 7:15 AM CDT	Special Weather Statement	BRO	Jim Hogg	45 min
May 1, 9:32 AM CDT	Special Weather Statement	BRO	Starr	28 min
May 1, 5:11 PM CDT	Special Weather Statement	BRO	Zapata	64 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement in 2021

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.