Alert archive / Colorado / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 112, NWS Denver/Boulder, CO

July 1, 1998Elbert County, Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 1, 1998, 7:16 PM MDT for Elbert County, Lincoln County, Colorado. 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
Jul 1, 1998, 7:16 PM MDT (01:16 UTC)
Expired
Jul 1, 1998, 8:00 PM MDT
In force
44 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Elbert County, CO, Lincoln County, CO

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.3 hours before the alert went out and 126 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, Denver, CO at 00:00Z on 1998-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1351 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 1998-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 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
1351 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
2220 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

728 
WUUS1 KDEN 020119 RRA
SVRDEN
COC039-073-020200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
716 PM MDT WED JUL 1 1998

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
    SOUTHEASTERN ELBERT COUNTY IN EAST CENTRAL COLORADO              
    SOUTHERN LINCOLN COUNTY IN EAST CENTRAL COLORADO

* UNTIL 800 PM MDT

* AT 711 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES WEST OF FORDER...OR ABOUT 40 MILES
  SOUTH OF LIMON...MOVING SOUTH AT 10 MILES PER HOUR.

* THIS WARNING REPLACES THE PREVIOUS WARNING FOR THE ABOVE COUNTIES.

LOCATIONS IN THE WARNING INCLUDE...FORDER...KARVAL...KUTCH...PUNKIN
CENTER AND WILD HORSE POINT

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

ENTREKIN

LAT...LON 3896 10337 3894 10404 3852 10405 3853 10327

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 1, 6:03 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln42 min
Jul 1, 6:27 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln48 min
Jul 1, 6:29 PM MDTSevere Thunderstorm WarningBOUWeld46 min
Jul 1, 6:52 PM MDTSevere Thunderstorm WarningBOUMorgan53 min
Jul 1, 7:15 PM MDTTornado WarningBOUWeld30 min
Jul 1, 7:44 PM MDTTornado WarningBOUMorgan, Weld31 min
Jul 1, 9:29 PM MDTSevere Thunderstorm WarningBOUMorgan41 min
Jul 2, 5:31 PM MDTSevere Thunderstorm WarningBOULarimer, Weld29 min

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.