Alert archive / Colorado / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 85, NWS Denver/Boulder, CO

July 14, 1993Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 14, 1993, 6:50 PM MDT for Weld County, Colorado. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Jul 14, 1993, 6:50 PM MDT (00:50 UTC)
Expired
Jul 14, 1993, 7:15 PM MDT
In force
25 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Weld County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.8 hours before the alert went out and 125 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 1993-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 394 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 1993-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939587897Sfc1 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
394 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1965 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.5

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

Local storm report, Jul 14, 3:52 PM MDT, 2 hours 58 minutes before
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Local storm report, Jul 14, 3:55 PM MDT, 2 hours 55 minutes before
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Special weather statement, Jul 14, 4:01 PM MDT, 2 hours 49 minutes before
COZ011-142300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
403 PM MDT WED JUL 14 1993

...THUNDERSTORMS CONTINUING OVER DOUGLAS COUNTY...

AT 356 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
THUNDERSTORMS PERSISTING OVER DOUGLAS COUNTY STRETCHING FROM NEAR
DECKERS AND WEST CREEK TO JUST SOUTH OF CASTLE ROCK INTO THE FRANKTOWN
AREA.  THE STRONGEST STORMS WERE LOCATED ABOUT 4 MILES SOUTHEAST OF
CASTLE ROCK AND 5 MILES WEST OF LARKSPUR.  THE STORMS WERE SLOWLY MOVING
EAST AROUND 10 MILES AN HOUR.

HEAVY RAIN HAS BEEN INDICATED BY RADAR WITH AMOUNTS IN THE CASTLE ROCK
AREA POSSIBLY EXCEEDING 1 INCH.  HAIL HAS ALSO ACCOMPANIED SOME OF THE
STRONGER STORMS.

BE PREPARED FOR WATER PONDING ON ROAD SURFACES AND SMALL CREEKS FILLING
RAPIDLY.  IF THREATENING WEATHER APPROACHES YOUR LOCATION...MOVE TO A
PLACE OF SAFETY.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF EASTERN COLORADO
UNTIL 900 PM.

WOLF
Special weather statement, Jul 14, 4:03 PM MDT, 2 hours 47 minutes before
COZ011-142300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
403 PM MDT WED JUL 14 1993

...THUNDERSTORMS CONTINUING OVER DOUGLAS COUNTY...

AT 356 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
THUNDERSTORMS PERSISTING OVER DOUGLAS COUNTY STRETCHING FROM NEAR
DECKERS AND WEST CREEK TO JUST SOUTH OF CASTLE ROCK INTO THE FRANKTOWN
AREA.  THE STRONGEST STORMS WERE LOCATED ABOUT 4 MILES SOUTHEAST OF
CASTLE ROCK AND 5 MILES WEST OF LARKSPUR.  THE STORMS WERE SLOWLY MOVING
EAST AROUND 10 MILES AN HOUR.

HEAVY RAIN HAS BEEN INDICATED BY RADAR WITH AMOUNTS IN THE CASTLE ROCK
AREA POSSIBLY EXCEEDING 1 INCH.  HAIL HAS ALSO ACCOMPANIED SOME OF THE
STRONGER STORMS.

BE PREPARED FOR WATER PONDING ON ROAD SURFACES AND SMALL CREEKS FILLING
RAPIDLY.  IF THREATENING WEATHER APPROACHES YOUR LOCATION...MOVE TO A
PLACE OF SAFETY.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF EASTERN COLORADO
UNTIL 900 PM.

WOLF
Special weather statement, Jul 14, 6:27 PM MDT, 23 minutes before
COZ011-150115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
630 PM MDT WED JUL 14 1993

...STRONG THUNDERSTORMS OVER NORTHERN LARIMER AND EXTREME
NORTHWEST WELD COUNTIES...

AT 630 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
STRONG THUNDERSTORMS STRETCHING FROM 15 MILES WEST OF FORT COLLINS
NORTHEAST TO JUST NORTHWEST OF NUNN IN NORTHWEST WELD COUNTY.
THE STRONGEST STORMS WERE WEST OF FORT COLLINS AND NORTHWEST OF
NUNN AND HEAVY RAIN AND SMALL HAIL ARE LIKELY WITH THESE STORMS.

MOVEMENT OF THE STORMS WAS EAST-NORTHEAST ABOUT 15 MPH.
THE WESTERN PORTIONS OF FORT COLLINS COULD BE AFFECTED DURING THE NEXT
HALF HOUR.

BE PREPARED FOR WATER PONDING ON ROAD SURFACES AND SMALL CREEKS FILLING
RAPIDLY.  IF THREATENING WEATHER APPROACHES YOUR LOCATION...MOVE TO A
PLACE OF SAFETY.

SZOKE/WOLF
Special weather statement, Jul 14, 6:30 PM MDT, 20 minutes before
COZ011-150115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
630 PM MDT WED JUL 14 1993

...STRONG THUNDERSTORMS OVER NORTHERN LARIMER AND EXTREME
NORTHWEST WELD COUNTIES...

AT 630 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
STRONG THUNDERSTORMS STRETCHING FROM 15 MILES WEST OF FORT COLLINS
NORTHEAST TO JUST NORTHWEST OF NUNN IN NORTHWEST WELD COUNTY.
THE STRONGEST STORMS WERE WEST OF FORT COLLINS AND NORTHWEST OF
NUNN AND HEAVY RAIN AND SMALL HAIL ARE LIKELY WITH THESE STORMS.

MOVEMENT OF THE STORMS WAS EAST-NORTHEAST ABOUT 15 MPH.
THE WESTERN PORTIONS OF FORT COLLINS COULD BE AFFECTED DURING THE NEXT
HALF HOUR.

BE PREPARED FOR WATER PONDING ON ROAD SURFACES AND SMALL CREEKS FILLING
RAPIDLY.  IF THREATENING WEATHER APPROACHES YOUR LOCATION...MOVE TO A
PLACE OF SAFETY.

SZOKE/WOLF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 6:15 PM MDTSevere Thunderstorm WarningBOUJefferson18 min
Jul 14, 6:39 PM MDTSevere Thunderstorm WarningBOULarimer36 min
Jul 14, 7:10 PM MDTSevere Thunderstorm WarningBOUWeld35 min
Jul 14, 7:45 PM MDTSevere Thunderstorm WarningBOUWeld30 min
Jul 14, 8:49 PM MDTTornado WarningBOUWeld26 min
Jul 14, 9:20 PM MDTSevere Thunderstorm WarningBOUWeld25 min
Jul 15, 4:17 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan, Weld43 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1993Every severe thunderstorm warning in 1993

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.