Alert archive / Colorado / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 139, NWS Pueblo, CO

August 29, 1998Chaffee County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Aug 29, 1998, 5:46 PM MDT for Chaffee County, Colorado. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 29, 1998, 5:46 PM MDT (23:46 UTC)
Expired
Aug 29, 1998, 6:45 PM MDT
In force
59 min
Issued by
NWS Pueblo, CO
Area
Whole counties

County Chaffee County, CO

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 11.8 hours before the alert went out and 204 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-pSkew-T log-p diagram, Grand Junction, CO at 12:00Z on 1998-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 1998-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3512 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
-13 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 
TTAA00 KPUB 292344 RRA
SVRPUB
COC015-300045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
546 PM MDT SAT AUG 29 1998

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CHAFFEE COUNTY IN SOUTH CENTRAL COLORADO

* UNTIL 645 PM MDT

* AT 543 PM MDT...RADAR SHOWED SEVERE STORMS NEAR PONCHA SPRINGS OR
  6 MILES WEST OF SALIDA AND NEAR MONARCH OR 15 MILES WEST NORTHWEST
  OF SALIDA MOVING SOUTH AT 10 MPH.

SOME LOCATIONS AFFECTED WILL BE ALONG HIGHWAY 50 BETWEEN MONARCH
PASS AND PONCHA SPRINGS THROUGH 645 PM.  AT THIS TIME...THE MOST
LIKELY SEVERE WEATHER WITH THESE STORMS IS LARGE HAIL.  IF YOU ARE
IN OR CLOSE TO THE WARNED AREA GO TO SAFETY IN A SMALL INTERIOR
ROOM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST PROTECTION.
SEVERE STORMS CAN PRODUCE TORNADOES WITH LITTLE WARNING.

SR/SR

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 Pueblo, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 29, 1:55 PM MDT, 3 hours 51 minutes earlier.

Area forecast discussion, Aug 29, 1:55 PM MDT, 3 hours 51 minutes before
SOUTH CENTRAL AND SOUTHEAST COLORADO AREA FORECAST
DISCUSSION
NATIONAL WEATHER SERVICE PUEBLO CO
155 PM MDT SAT AUG 29 1998

LARGE HIGH PRESSURE RIDGE COVERING MOST OF THE SW US WILL KEEP
SOUTHEAST COLORADO DRY THROUGH THE NIGHT. MODELS HINT AT SOME
MID/UPPER LEVEL MOISTURE COMING IN OVER THE TOP OF THE RIDGE AND AS
RIDGE SLIPS TO THE SOUTHWEST THAT MOISTURE MAY WORK ITS WAY INTO THE
CWA. HOWEVER IT WILL LIKELY BE IN THE FORM OF THIN CIRRUS FOR THE
OVERNIGHT PERIOD AND NOT MUCH IN THE WAY OF VERTICAL MOTION TO GET
TSTMS STARTED.

MOSTLY CLEAR SKIES TONIGHT AND LIGHT WINDS WILL LET US RADIATE PRETTY
WELL SO WILL GO BELOW GUIDANCE FOR OVERNIGHT MINS. FWC HAS BEEN TOO
WARM FOR PAST DAY OR SO.

FORTUNE

In the hours before

Special weather statement, Aug 29, 11:57 AM MDT, 5 hours 49 minutes before
COZ060>081-300600-

SIGNIFICANT WEATHER OUTLOOK FOR SOUTH CENTRAL AND
SOUTHEAST COLORADO
NATIONAL WEATHER SERVICE PUEBLO CO
NOON MDT WED AUG 26 1998

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES:

ALAMOSA    BACA     BENT         CHAFFEE  CONEJOS
COSTILLA   CROWLEY  CUSTER       EL PASO  FREMONT
HUERFANO   KIOWA    LAS ANIMAS   MINERAL  OTERO
PROWERS    PUEBLO   RIO GRANDE   SAGUACHE TELLER

HIGH PRESSURE CONTINUES TO DOMINATE THE REGION TODAY AND WITH
VERY LITTLE MOISTURE AVAILABLE THUNDERSTORMS ARE NOT IN THE
FORECAST FOR THIS AFTERNOON AND EVENING. MOUNTAIN AREAS MAY SEE ONE
OR TWO THUNDERSTORMS DEVELOP BUT THEY SHOULD BE WEAK AND SHORT LIVED
STORMS.

SPOTTER ACTIVATION WILL NOT BE NECESSARY THIS AFTERNOON OR
EVENING.

FORTUNE

Nearby

Severe Thunderstorm Warnings in Colorado, 1998Every severe thunderstorm warning in 1998

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.