Alert archive / Colorado / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 100, NWS Denver/Boulder, CO

July 23, 1992Arapahoe County, Elbert County, Washington County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 23, 1992, 3:08 PM MDT for Arapahoe County, Elbert County, Washington County, Colorado. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Jul 23, 1992, 3:08 PM MDT (21:08 UTC)
Expired
Jul 23, 1992, 3:45 PM MDT
In force
37 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Arapahoe County, CO, Elbert County, CO, Washington County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 9.1 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 1992-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 209 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 12:00Z on 1992-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 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
209 J/kg
Mixed-layer CIN
-279 J/kg
Mixed-layer LCL
1415 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Jul 23, 11:50 AM MDT, 3 hours 18 minutes before
COZ002-004-011-012-013-240000-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST COLORADO
NATIONAL WEATHER SERVICE DENVER CO
1140 AM MDT THU JUL 23 1992

...SCATTERED THUNDERSTORMS AGAIN THIS AFTERNOON AND EVENING...ISOLATED
SEVERE STORMS POSSIBLE...

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS          DENVER     JACKSON      LOGAN       SEDGWICK     YUMA
ARAPAHOE       DOUGLAS    JEFFERSON    MORGAN      SUMMIT
BOULDER        GILPIN     LARIMER      PARK        WASHINGTON
CLEAR CREEK    GRAND      LAKE         PHILLIPS    WELD

THE ATMOSPHERE HAS BECOME MORE MOIST TODAY DUE TO AIR FLOWING IN FROM
THE PACIFIC AND GULF OF MEXICO REGIONS.  THE AIR AT THE SURFACE HAS
WARMED...BUT CONDITIONS ARE STILL RELATIVELY STABLE AND A LOT OF HEATING
WILL BE REQUIRED TO GET STORMS GOING FROM THAT ALONE.  THERE IS AN UPPER
LEVEL DISTURBANCE OVER CENTRAL COLORADO WHICH SHOULD MOVE OFF THE
FOOTHILLS AND OVER THE NORTHEAST PLAINS THIS AFTERNOON.  THIS WILL BE
THE TRIGGER NEED TO SPAWN SCATTERED SHOWERS AND THUNDERSTORMS.  SOME
OF THE STORMS SHOULD BE STRONG...PRODUCING HEAVY RAIN...GUSTY WINDS
AND SMALL HAIL.  THERE IS A REMOTE CHANCE THAT A FEW STORMS COULD
BECOME SEVER8E...MAINLY OUT IN THE NORTHEAST PLAINS AND BORDER REGIONS
LATE THIS AFTERNOON AND EARLY TONIGHT.

DULONG
Special weather statement, Jul 23, 11:55 AM MDT, 3 hours 13 minutes before
COZ002-004-011-012-013-240000-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST COLORADO CORRECTED
NATIONAL WEATHER SERVICE DENVER CO
1155 AM MDT THU JUL 23 1992

...SCATTERED THUNDERSTORMS AGAIN THIS AFTERNOON AND EVENING...ISOLATED
SEVERE STORMS POSSIBLE...

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS          DENVER     JACKSON      LOGAN       SEDGWICK     YUMA
ARAPAHOE       DOUGLAS    JEFFERSON    MORGAN      SUMMIT
BOULDER        GILPIN     LARIMER      PARK        WASHINGTON
CLEAR CREEK    GRAND      LAKE         PHILLIPS    WELD

THE ATMOSPHERE HAS BECOME MORE MOIST TODAY DUE TO AIR FLOWING IN FROM
THE PACIFIC AND GULF OF MEXICO REGIONS.  THE AIR AT THE SURFACE HAS
WARMED...BUT CONDITIONS ARE STILL RELATIVELY STABLE AND A LOT OF HEATING
WILL BE REQUIRED TO GET STORMS GOING FROM THAT ALONE.  THERE IS AN UPPER
LEVEL DISTURBANCE OVER CENTRAL COLORADO WHICH SHOULD MOVE OFF THE
FOOTHILLS AND OVER THE NORTHEAST PLAINS THIS AFTERNOON.  THIS WILL BE
THE TRIGGER NEED TO SPAWN SCATTERED SHOWERS AND THUNDERSTORMS.  SOME
OF THE STORMS SHOULD BE STRONG...PRODUCING HEAVY RAIN...GUSTY WINDS
AND SMALL HAIL.  THERE IS A REMOTE CHANCE THAT A FEW STORMS COULD `
BECOME SEVERE...MAINLY OUT IN THE NORTHEAST PLAINS AND BORDER REGIONS
LATE THIS AFTERNOON AND EARLY TONIGHT.

SEVERE WEATHER SPOTTERS MAY BE NEEDED.

DULONG
Special weather statement, Jul 23, 2:08 PM MDT, 1 hour before
COZ002-004-232100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
209 PM MDT THU JUL 23 1992

   ...THUNDERSTORMS MOVING THROUGH ROCKY MOUNTAINS NATIONAL PARK...

AT 205 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS DEVELOPING AND MOVING THROUGH THE ROCKY MOUNTAIN NATIONAL
PARK AREA IN LARIMER COUNTY.  THE STRONGER STORMS WERE LOCATED IN
WESTERN LARIMER COUNTY 12 MILES NORTHWEST OF ESTES PARK.  THESE WERE
MOVING EAST AT ABOUT 15 MPH.

THESE THUNDERSTORMS ARE ASSOCIATED WITH A MID-LEVEL WIND SPEED MAXIMUM
MOVING ACROSS NORTHERN COLORADO INTO SOUTHEASTERN WYOMING.
THUNDERSTORMS WILL CONTINUE THROUGH MOST OF THE AFTERNOON AND COULD
PRODUCE HEAVY RAIN...GUSTY WINDS...FREQUENT DANGEROUS LIGHTNING AND
SOME SMALL HAIL.  PERSONS IN LARIMER COUNTY...AND ESPECIALLY HIKERS AND
CAMPERS IN HIGHER ELEVATIONS...SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER AND SHOULD MOVE TO SAFETY SHOULD THUNDERSTORMS APPROACH.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION FOR
LATER STATEMENTS AND POSSIBLE WARNINGS.

DELGADO
Special weather statement, Jul 23, 3:00 PM MDT, 8 minutes before
COZ012-013-232130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
300 PM MDT THU JUL 23 1992

...VERY STRONG THUNDERSTORMS IN EXTREME EASTERN ARAPAHOE COUNTY...

AT 250 PM MDT...RADAR SHOWED A VERY STRONG THUNDERSTORM ABOUT 13 MILES
EAST OF DEER TRAIL IN EXTREME EASTERN ARAPAHOE COUNTY.  INTENSE
LIGHTNING...VERY HEAVY RAIN...STRONG WINDS AND HAIL ARE LIKELY.

THE STORM IS NEARLY STATIONARY...SO PEOPLE IN THIS AREA...INCLUDING THE
THE TOWN OF DEER TRAIL AND ON INTERSTATE 70...SHOULD ALSO BE PREPARED
FOR LOCALIZED FLOODING.

DULONG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 5:24 PM MDTSevere Thunderstorm WarningBOULogan, Weld36 min
Jul 23, 5:56 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Weld34 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1992Every severe thunderstorm warning in 1992

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.