Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 21, NWS Brownsville, TX

September 9, 2001Willacy County, Texas

NWS Brownsville, TX issued this tornado warning at Sep 9, 2001, 4:16 PM CDT for Willacy County, Texas. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Sep 9, 2001, 4:16 PM CDT (21:16 UTC)
Expired: Sep 9, 2001, 5:00 PM CDT
In force: 44 min
Issued by: NWS Brownsville, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Willacy County, TX

The radar

The Brownsville radar (KBRO), 75 km from the middle of the area, began a volume at 21:15 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, 9.3 hours before the alert went out and 78 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: 2923 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 654 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

860 
WFUS54 KBRO 092117
TORBRO
TXC489-092200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
416 PM CDT SUN SEP 9 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  WILLACY COUNTY IN DEEP SOUTH TEXAS

* UNTIL 500 PM CDT

* AT 410 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A DEVELOPING TORNADO 7 MILES NORTHWEST OF
  RAYMONDVILLE...MOVING SOUTH AT 25 MPH.

* THE TORNADO IS EXPECTED BE NEAR...
   LYFORD BY 430 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 2657 9776 2659 9800 2635 9794 2636 9764

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 3:01 PM CDT	Flash Flood Warning	BRO	Kenedy	3 hr
Sep 9, 3:01 PM CDT	Flash Flood Warning	BRO	Kenedy	3 hr
Sep 9, 3:22 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy	38 min
Sep 9, 3:58 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo, Kenedy, Willacy	62 min
Sep 9, 4:25 PM CDT	Tornado Warning	BRO	Kenedy	65 min
Sep 9, 5:00 PM CDT	Tornado Warning	BRO	Cameron, Hidalgo, Willacy	60 min
Sep 9, 5:41 PM CDT	Flash Flood Warning	BRO	Kenedy, Willacy	3 hr
Sep 9, 6:11 PM CDT	Flash Flood Warning	BRO	Hidalgo, Kenedy, Willacy	3 hr
Sep 9, 6:16 PM CDT	Tornado Warning	BRO	Cameron	29 min
Sep 9, 6:50 PM CDT	Tornado Warning	BRO	Cameron	40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.