Alert archive / New Mexico / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 751

August 13, 20047 counties in Colorado; 9 counties in New Mexico

The Storm Prediction Center issued this severe thunderstorm watch at Aug 13, 2004, 1:50 PM MDT for 7 counties in Colorado; 9 counties in New Mexico. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Aug 13, 2004, 1:50 PM MDT (19:50 UTC)
Expired: Aug 13, 2004, 9:00 PM MDT
In force: 7 hr
Issued by: the Storm Prediction Center

Counties Bent County, CO, Crowley County, CO, Huerfano County, CO, Kiowa County, CO, Las Animas County, CO, Otero County, CO, Pueblo County, CO, Colfax County, NM, Curry County, NM, De Baca County, NM, Guadalupe County, NM, Harding County, NM, Mora County, NM, Quay County, NM, San Miguel County, NM, Union County, NM

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Aug 13, 4:39 PM MDT	Severe Thunderstorm Warning	ABQ	Colfax	51 min
Aug 13, 4:46 PM MDT	Severe Thunderstorm Warning	ABQ	Guadalupe	44 min
Aug 13, 4:49 PM MDT	Severe Thunderstorm Warning	ABQ	San Miguel	56 min
Aug 13, 5:01 PM MDT	Severe Thunderstorm Warning	PUB	Custer, Pueblo	59 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 7.8 hours before the alert went out and 210 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: 104 J/kg
Mixed-layer CIN: -278 J/kg
Mixed-layer LCL: 1659 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 224 m²/s²
0-3 km storm-relative helicity: 310 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.

000 
WWUS20 KWNS 131950
SEL1  
SPC WW 131950
COZ000-NMZ000-140300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 751
NWS STORM PREDICTION CENTER NORMAN OK
150 PM MDT FRI AUG 13 2004

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       SOUTHEAST COLORADO
       EASTERN NEW MEXICO

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 150 PM UNTIL 900
PM MDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES EAST NORTHEAST OF PUEBLO
COLORADO TO 65 MILES EAST OF CORONA NEW MEXICO.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 750...

DISCUSSION...WIDELY SCATTERED SEVERE STORMS ARE EXPECTED TO DEVELOP
ALONG THE FRONT RANGE FROM SRN CO SWD INTO NM THE NEXT FEW
HOURS...WITH OTHER ISOLATED STORM DEVELOPMENT POSSIBLE ON A WEAK
TROUGH ACROSS THE PLAINS OF SE CO.  SURFACE TEMPERATURES OF 75-80 F
AND DEWPOINTS IN THE 50S OVER THE HIGH PLAINS ARE CONTRIBUTING TO
MLCAPE VALUES OF 1000-1500 J/KG...IN AN ENVIRONMENT OF 30-40 KT NWLY
MID LEVEL FLOW AND SUFFICIENT VERTICAL SHEAR FOR SUPERCELLS.  THE
MAIN SEVERE THREAT WILL BE LARGE HAIL...WITH ISOLATED DAMAGING GUSTS
ALSO POSSIBLE WITH S MOVING SUPERCELLS THROUGH THE LATE EVENING
HOURS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 36020.


...THOMPSON

382,1023 340,1031 340,1054 382,1050

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 12, 6:26 PM MDT	Mesoscale Discussion	SPC	Conejos, Costilla, Las Animas	94 min
Aug 13, 12:21 PM MDT	Mesoscale Discussion	SPC	Bent, Costilla, Crowley, Custer, Huerfano, Las Animas and 2 more	84 min
Aug 13, 4:30 PM MDT	Mesoscale Discussion	SPC	Bent, Crowley, Huerfano, Kiowa, Las Animas, Otero and 1 more	2 hr

Nearby

Severe Thunderstorm Watches in New Mexico, 2004 Severe Thunderstorm Watches in Colorado, 2004 Every severe thunderstorm watch in 2004

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.