Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 65, NWS Corpus Christi, TX

September 9, 2001Jim Wells County, Kleberg County, Nueces County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Sep 9, 2001, 1:15 PM CDT for Jim Wells County, Kleberg County, Nueces County, Texas. It was in force for 45 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, 1:15 PM CDT (18:15 UTC)
Expired: Sep 9, 2001, 2:00 PM CDT
In force: 45 min
Issued by: NWS Corpus Christi, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Jim Wells County, TX, Kleberg County, TX, Nueces County, TX

The radar

The Corpus Christi radar (KCRP), 36 km from the middle of the area, began a volume at 18:14 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, 6.3 hours before the alert went out and 48 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: 3240 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 576 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 37 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.

077 
WUUS54 KCRP 091817
SVRCRP
TXC249-273-355-091900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
115 PM CDT SUN SEP 9 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN JIM WELLS COUNTY IN TEXAS
  KLEBERG COUNTY IN TEXAS
  SOUTHERN NUECES COUNTY IN TEXAS

* UNTIL 200 PM CDT

* AT 109 PM CDT...DOPPLER RADAR AND SPOTTERS REPORTED A LINE OF 
SEVERE THUNDERSTORM PRODUCING DAMAGING WIND.  THE LINE IS MOVING TO 
THE SOUTH AT 25 MPH.

TAKE COVER NOW...THESE ARE DANGEROUS WINDS.

THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...WINDS UP TO 60 
MILES AN HOUR...


LAT...LON 2774 9733 2733 9746 2732 9823 2758 9821
          2772 9817

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Corpus Christi, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 9, 9:15 AM CDT, 4 hours earlier.

Area forecast discussion, Sep 9, 9:15 AM CDT, 4 hours before

COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
915 AM CDT SUN SEP 9 2001

DISCUSSION...12Z CRP SOUNDING DEPICTS AN INCREASE IN PWAT FROM 1.71
TO 2.03 INCHES DURING THE PAST 24-HRS WITH A CAPE NEAR 5000 J/KG.  A
DEEP SOUTHERLY FLOW AROUND 25KT IN THE BOUNDARY LAYER WEAKENS WITH
HEIGHT AND VEERS TO THE SW IN THE 850-700MB LAYER AND BECOMES WEST
AROUND 400 MB.  360K THETA-E RIDGE EXTENDS NORTHWARD ACROSS THE ERN
FA WITH A THETA-E TROF ACROSS THE WRN FA THIS MORNING.  WSR-88D REF
IMAGERY DISPLAYS THE DEEP CONVECTION LOCATED ACROSS CENTRAL/SOUTH
CENTRAL/SE TEXAS THIS MORNING..CONCENTRATED EAST OF I35 AND
ALONG/NORTH OF I10.  OUTFLOW BOUNDARY CONTINUES TO PUSH SOUTH OF SAT
AND IS ORIENTED ON A SW-NE AXIS EXTENDING FROM NORTH OF THE NW CWA
BORDER TO NEAR HALLETTSVILLE (N OF THE NERN CWA).  EXPECT PORTIONS
OF THE FA EAST OF I37 TO HAVE THE BEST POTENTIAL FOR CONVECTION WITH
THIS FEATURE TODAY..IN PHASE WITH THE THETA-E MAX AND HIGHEST
BUOYANCY VALUES.  CURRENT FCST IS IN AGREEMENT..AND WILL MAKE MINOR
ADJUSTMENTS.  1-HR FLASH FLOOD GUIDANCE ACROSS THE CWA RANGES FROM
1.3 INCHES IN VICTORIA COUNTY..1.4 INCHES IN WEBB..1.9 INCHES IN
NUECES COUNTY..AND 2.4 IN GOLIAD COUNTY.  WIDESPREAD FLOODING IS NOT
ANTICIPATED WITH THIS EVENT AT THIS TIME..AND NO FFA IS IN EFFECT.

BML.76

.CRP...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 1:55 PM CDT	Flash Flood Warning	CRP	Kleberg, Nueces	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning 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.