Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 535

April 22, 2003Gaines County, Martin County, Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 22, 2003, 7:32 PM CDT for Gaines County, Martin County, Texas. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Apr 22, 2003, 7:32 PM CDT (00:32 UTC)
Expired: Apr 22, 2003, 9:00 PM CDT
In force: 88 min
Issued by: the Storm Prediction Center

Counties Gaines County, TX, Martin County, TX

The radar

The Midland/Odessa radar (KMAF), 63 km from the middle of the area, began a volume at 00:35 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

Midland Regional, TX (KMAF), launched 00:00Z, 0.5 hours before the alert went out and 62 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: 1643 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1969 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 12.1

Open this sounding in Storm Lab

The text

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

084 
ACUS11 KWNS 230032
SWOMCD
SPC MCD 230032 
TXZ000-230200-

MESOSCALE DISCUSSION 0535
NWS STORM PREDICTION CENTER NORMAN OK
0732 PM CDT TUE APR 22 2003

AREAS AFFECTED...ERN NM/WEST TX

CONCERNING...TORNADO WATCH 144...

VALID 230032Z - 230200Z

A LONE TSTM INITIATED OVER ANDREWS COUNTY TX AROUND 00 UTC AND WAS
MOVING NNE AT ABOUT 25KT. MAF 00 UTC SOUNDING WAS VERY SUPPORTIVE OF
SUPERCELLULAR STORM STRUCTURE WITH MLCAPE IN EXCESS OF 1500 J/KG
AND SFC-6KM SHEAR NEARING 60KT. LATEST TRACK TAKES THIS PARTICULAR
UPDRAFT INTO THE VICINITY OF STRONG NW-SE BAROCLINIC ZONE ACROSS NRN
ANDREWS/WRN MARTIN COUNTIES BY 01 UTC. BOUNDARY ORIENTATION...AND
POTENTIAL LOWER LFC/HIGH BOUNDARY LAYER RH NEAR THE BOUNDARY...
SUGGEST A BRIEF OPPORTUNITY FOR TORNADOGENESIS MAY EXIST AS THE CELL
CROSSES THE BOUNDARY AND ENCOUNTERS ESTIMATED SFC-1KM SRH IN EXCESS
OF 200 M2/S2. HAIL WOULD LIKELY BE THE PRIMARY THREAT WITH THIS TSTM
AFTER IS CROSSES INTO A MORE STABLE AIRMASS AFTER 01 UTC.

..CARBIN.. 04/23/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...MAF...

32220241 32370264 32820277 32910249 32710209 32160182

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 12:04 AM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Bailey, Borden, Briscoe, Carson and 27 more	116 min
Apr 23, 1:05 AM CDT	Severe Thunderstorm Watch	SPC	Bailey, Castro, Cochran, Dallam, Deaf Smith, Hartley and 10 more	6 hr
Apr 23, 2:58 AM CDT	Mesoscale Discussion	SPC	Armstrong, Borden, Briscoe, Childress, Coke, Collingsworth and 25 more	2 hr
Apr 23, 3:59 AM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Cochran, Deaf Smith, Hale, Hartley and 13 more	2 hr
Apr 23, 10:30 AM CDT	Mesoscale Discussion	SPC	Armstrong, Baylor, Borden, Briscoe, Childress, Coke and 41 more	90 min
Apr 23, 11:50 AM CDT	Tornado Watch	SPC	Archer, Baylor, Brown, Callahan, Childress, Clay and 30 more	6 hr
Apr 23, 1:26 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Brown, Callahan, Childress, Clay and 27 more	94 min
Apr 23, 2:12 PM CDT	Mesoscale Discussion	SPC	Bandera, Crockett, Edwards, Kerr, Kimble, Kinney and 7 more	93 min
Apr 23, 2:35 PM CDT	Severe Thunderstorm Watch	SPC	Crockett, Edwards, Kimble, Kinney, Mason, Menard and 4 more	5 hr
Apr 23, 3:08 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Bosque, Brown, Callahan, Childress and 48 more	97 min
Apr 23, 4:00 PM CDT	Tornado Watch	SPC	Bosque, Collin, Comanche, Cooke, Coryell, Dallas and 25 more	6 hr
Apr 23, 4:02 PM CDT	Mesoscale Discussion	SPC	Crockett, Edwards, Kimble, Kinney, Mason, Menard and 5 more	88 min
Apr 23, 5:36 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Brown, Callahan, Clay, Coleman and 13 more	54 min
Apr 23, 6:00 PM CDT	Tornado Watch	SPC	Archer, Baylor, Brown, Callahan, Clay, Coleman and 15 more	4 hr

Nearby

Mesoscale Discussions in Texas, 2003 Every mesoscale discussion in 2003

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.