Alert archive / Colorado / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 87, NWS Denver/Boulder, CO

July 16, 1994Morgan County, Washington County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 16, 1994, 7:05 PM MDT for Morgan County, Washington County, Colorado. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Jul 16, 1994, 7:05 PM MDT (01:05 UTC)
Expired
Jul 16, 1994, 7:30 PM MDT
In force
25 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Morgan County, CO, Washington County, CO

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.1 hours before the alert went out and 270 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, N. Platte/Lee Bi, NE at 00:00Z on 1994-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 229 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, N. Platte/Lee Bi, NE at 00:00Z on 1994-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
229 J/kg
Mixed-layer CIN
-283 J/kg
Mixed-layer LCL
1507 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
223 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 16, 1:24 PM MDT, 5 hours 41 minutes before
COZ041-162000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
125 PM MDT SAT JUL 16 1994

...STRONG THUNDERSTORM OVER DOUGLAS COUNTY...

AT 120 PM...A STRONG THUNDERSTORM WAS INDICATED ABOUT 5 MILES SOUTH OF
CASTLE ROCK MOVING EAST AT 20 MPH AND WILL LIKELY MOVE ACROSS SOUTHEAST
DOUGLAS COUNTY BY 200 PM MDT.

IF YOU ARE IN THE PATH OF THIS STORM...ESPECIALLY IN OR NEAR THE TOWNS
OF LARKSPUR...CASTLE ROCK AND FRANKTOWN...BE READY  FOR WINDS GUSTING
TO 40 MPH...AND THE POSSIBILITY OF BRIEF HEAVY RAIN OR HAIL.

STAY TUNED TO NOAA WEATHER RADIO FOR ANY UPDATES OR POSSIBLE WARNINGS.

DULONG
Special weather statement, Jul 16, 3:10 PM MDT, 3 hours 55 minutes before
COZ038-042-162215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
310 PM MDT SAT JUL 16 1994

...VERY STRONG THUNDERSTORM HEADING TOWARDS LARIMER AND WELD COUNTIES...

A VERY STRONG THUNDERSTORM JUST ACROSS THE BORDER IN WYOMING WILL LIKELY
MOVE INTO EXTREME NORTHEAST LARIMER AND NORTHWEST WELD COUNTIES OF
COLORADO BY 330 PM.

IF YOU ARE IN THE PATH OF THIS STORM...ESPECIALLY IN OR NEAR THE
COLORADO TOWNS OF VIRGINIA DALE...LIVERMORE...NORFOLK...WARREN...
WELLINGTON OR NUNN...BE READY TO TAKE COVER FROM THREATENING WEATHER
FROM NOW THROUGH 415 PM.

A WARNING MAY BE ISSUED FOR THIS STORM SHORTLY.

DULONG
Special weather statement, Jul 16, 3:12 PM MDT, 3 hours 53 minutes before
COZ038-042-162215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
310 PM MDT SAT JUL 16 1994

...VERY STRONG THUNDERSTORM HEADING TOWARDS LARIMER AND WELD COUNTIES...

A VERY STRONG THUNDERSTORM JUST ACROSS THE BORDER IN WYOMING WILL LIKELY
MOVE INTO EXTREME NORTHEAST LARIMER AND NORTHWEST WELD COUNTIES OF
COLORADO BY 330 PM.

IF YOU ARE IN THE PATH OF THIS STORM...ESPECIALLY IN OR NEAR THE
COLORADO TOWNS OF VIRGINIA DALE...LIVERMORE...NORFOLK...WARREN...
WELLINGTON OR NUNN...BE READY TO TAKE COVER FROM THREATENING WEATHER
FROM NOW THROUGH 415 PM.

A WARNING MAY BE ISSUED FOR THIS STORM SHORTLY.

DULONG
Special weather statement, Jul 16, 5:20 PM MDT, 1 hour 45 minutes before
COZ038>092-170000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
515 PM MDT SAT JUL 16 1994

...TORNADO WATCH IN EFFECT FOR MUCH OF NORTHEAST COLORADO UNTIL 1100
PM...

A TORNADO WATCH NOW COVERS ALL OF NORTHEAST COLORADO FROM THE FOOTHILLS
EASTWARD TO THE KANSAS/NEBRASKA BORDER.  SEVERAL SEVERE-TORNADIC STORMS
WERE LOCATED IN LARIMER AND WELD COUNTY AT 515 PM.  MORE SEVERE AND
TORNADIC THUNDERSTORMS ARE EXPECTED TOP DEVELOP DURING THE EVENING
ACROSS NORTHEAST COLORADO.

RESIDENTS IN NORTHEAST COLORADO ARE URGED TO REMAIN ALERT TO CHANGING
WEATHER CONDITIONS AND MOVE TO A SAFE LOCATION IF A SEVERE THUNDERSTORM
OR TORNADO WARNING IS ISSUED OR THREARTENING WEATHER IS OBSERVED.

THE SEVERE THUNDERSTORM WATCH ISSUED EARLIER FOR NORTHEAST COLORADO IS
NO LONGER IN EFFECT.

IMY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 6:15 PM MDTTornado WarningBOUWeld30 min
Jul 16, 6:21 PM MDTSevere Thunderstorm WarningBOUWashington39 min
Jul 16, 6:27 PM MDTTornado WarningBOUAdams, Arapahoe33 min
Jul 16, 6:45 PM MDTSevere Thunderstorm WarningBOUAdams, Denver30 min
Jul 16, 6:45 PM MDTSevere Thunderstorm WarningBOUWeld30 min
Jul 16, 7:00 PM MDTTornado WarningBOUAdams, Arapahoe, Washington30 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1994Every severe thunderstorm warning in 1994

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.