Alert archive / Colorado / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 182, NWS Denver/Boulder, CO

July 25, 1996Washington County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 25, 1996, 6:23 PM MDT for Washington County, Colorado. It was in force for 37 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
Jul 25, 1996, 6:23 PM MDT (00:23 UTC)
Expired
Jul 25, 1996, 7:00 PM MDT
In force
37 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Washington County, CO

The radar

The Denver radar (KFTG), 117 km from the middle of the area, began a volume at 00:22 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.4 hours before the alert went out and 11 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 1996-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 353 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 1996-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
353 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
2818 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
53 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 KDEN 260023
SVRDEN
COC075-095-115-121-260100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
623 PM MDT THU JUL 25 1996

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...

IN NORTHEAST COLORADO
     NORTHERN WASHINGTON...EASTERN LOGAN...PHILLIPS AND SEDGWICK

INCLUDING THE FOLLOWING LOCATIONS
     SOUTHEASTERN STERLING...AMHERST...BURDETT...CROOK...FAIRFIELD...
     FLEMING...HAXTUN...HIGHLAND CENTER...HOLYOKE...ILIFF...LONE
     STAR...MARKS BUTTE...OTIS...PAOLI...PLEASANT VALLEY...PROCTOR...
     SIXTEEN-MILE CORNER...ST PETERS AND WAGES

AT 620 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM 2 MILES EAST OF HAXTUN...OR ABOUT 33 MILES EAST 
OF STERLING.

AT 605 PM MDT THE PUBLIC REPORTED HAIL JUST UNDER GOLF BALL SIZE
2 1/2 MILES SOUTH OF SEDGWICK IN SEDGWICK COUNTY.

THE STORM WAS MOVING SOUTHEAST AT 25 MILES PER HOUR.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS OVER 60
MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.

A TORNADO WATCH CONTINUES U.NTIL 9PM FOR MUCH OF EASTERN COLORADO.

HOLZINGER

LAT...LON 4049 10214 4046 10283 4003 10284 4027 10339
      4083 10307 4096 10210

&

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 25, 3:44 PM MDT, 2 hours 39 minutes before
COZ036-252230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
343 PM MDT THU JUL 25 1996

...THUNDERSTORMS IN NORTHEAST PARK AND SOUTHERN JEFFERSON COUNTIES...

AT 340 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF THUNDERSTORMS 3 MILES EAST OF PINE...OR ABOUT 27 MILES
SOUTHWEST OF DENVER.  THE STORMS WERE MOVING EAST SOUTHEAST AT
15 MILES PER HOUR.

THE STORMS ARE CAPABLE OF PRODUCING BRIEF HEAVY RAIN AS WELL AS
SMALL HAIL.  RAINFALL AMOUNTS OF UP TO 1/2 INCH IN AN HOUR'S TIME
ARE POSSIBLE WITH THESE STORMS.  LOCALIZED FLOODING IS A POSSIBILITY
WITH THESE STORMS.

THE AREAS MOST VULNERABLE TO FLOODING IS THE BURNED OUT AREAS AROUND
BUFFALO CREEK.

PERSONS IN OR NEAR BUFFALO CREEK...BAILEY AND PINE SHOULD BE ON THE
LOOKOUT FOR THESE STORMS AND MOVE TO HIGHER GROUND IF FLOODING
OCCURS.  NEVER DRIVE...OR WALK...THROUGN FLOODED AREAS.

LESZCYNSKI
Special weather statement, Jul 25, 3:55 PM MDT, 2 hours 28 minutes before
COZ041-046-252230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
355 PM MDT THU JUL 25 1996

...STRONG THUNDERSTORM IN NORTHERN ELBERT COUNTY...

AT 352 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM OVER NORTHCENTRAL ELBERT COUNTY...OR ABOUT 26 MILES
WEST OF LIMON.

THE STORM WAS MOVING SOUTHEAST AT 25 MILES PER HOUR.

BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF
SAFETY IF BAD WEAT&HER APPROACHES.

DANGEROUS LIGHTNING...HAIL...HEAVY RAIN...AND STRONG GUSTY WINDS
WILL OCCUR WITH THIS STORM.

A TORNADO WATCH REMAINS IN EFFECT FOR MOST OF EASTERN COLORADO UNTIL
9PM THIS EVENING.

HOLZINGER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 6:23 PM MDTSevere Thunderstorm WarningBOULogan, Phillips, Sedgwick37 min
Jul 25, 7:00 PM MDTSevere Thunderstorm WarningBOUWashington45 min
Jul 25, 7:30 PM MDTTornado WarningBOUWashington30 min
Jul 25, 8:02 PM MDTTornado WarningBOUWashington28 min
Jul 25, 8:30 PM MDTTornado WarningBOUWashington30 min
Jul 25, 9:53 PM MDTSevere Thunderstorm WarningBOULincoln22 min
Jul 26, 4:04 PM MDTSevere Thunderstorm WarningBOUWeld41 min
Jul 26, 4:17 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln43 min
Jul 26, 5:10 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln35 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.