Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 4, NWS Brownsville, TX

May 21, 2001Hidalgo County, Texas

NWS Brownsville, TX issued this tornado warning at May 21, 2001, 9:14 PM CDT for Hidalgo County, Texas. It was in force for 46 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 21, 2001, 9:14 PM CDT (02:14 UTC)
Expired: May 21, 2001, 10:00 PM CDT
In force: 46 min
Issued by: NWS Brownsville, TX
Area: Whole counties

County Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 93 km from the middle of the area, began a volume at 02:18 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.

What was reported inside it

Time	Report	Where	Remark
May 21, 9:15 PM CDT	Tornado F1	Mission, TX	An F1 tornado ripped through a neighborhood. The tornado peeled roofs and blew out a window ofa home. It also ripped up a newly built children play scape. The tornado also took carport panelsand blew them into the center and wrapped a large panel around a t
May 21, 9:25 PM CDT	Tornado F1	Mission, TX	An F1 Tornado touched down briefly at a baseball field. The twister blew aluminum bleachers that surrounded the baseball diamond into the pitcher's mound. It also damaged the roof of a nearby city law enforcement building.
May 21, 9:30 PM CDT	Thunderstorm Wind 60 E	Mission, TX	Strong thunderstorm winds removed a roof from a mobile home and knocked down trees.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 21, 5:15 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 00:00Z, 2.2 hours before the alert went out and 96 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: 2941 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 698 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: -47 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KBRO 220215
TORBRO

TXC215-220300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
914 PM CDT MON MAY 21 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN HIDALGO COUNTY IN DEEP SOUTH TEXAS

* UNTIL 1000 PM CDT

* AT 913 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A DEVELOPING TORNADO NEAR MISSION...MOVING
  EAST AT 15 MPH.

* THE TORNADO IS EXPECTED BE NEAR...
   MCALLEN...HIDALGO BY 935 PM CDT.
   PHARR BY 950 PM CDT.
   LOPEZVILLE BY 955 PM CDT.
   SAN JUAN...ALAMO BY 1000 PM CDT.

THE SAFEST PLACE TO BE DURING A TORNADO IN IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR IN AN INTERIOR HALLWAY
OR CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

$$

LAT...LON 2631 9841 2614 9845 2606 9811 2628 9807

CASTILLO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 7:13 PM CDT	Tornado Warning	BRO	Brooks, Hidalgo, Kenedy	62 min
May 21, 7:19 PM CDT	Severe Thunderstorm Warning	BRO	Brooks	56 min
May 21, 7:50 PM CDT	Flash Flood Warning	BRO	Starr	3 hr
May 21, 8:01 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Starr	59 min
May 21, 8:44 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	61 min
May 21, 9:06 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy	54 min
May 21, 10:40 PM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg	50 min

Nearby

Tornado Warnings in Texas, 2001 Every tornado warning in 2001 Tornadoes in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.