Alert archive / Colorado / Tornado Warnings in 1988

Tornado Warning 6, NWS Denver/Boulder, CO

June 8, 1988Adams County, Arapahoe County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 8, 1988, 6:10 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jun 8, 1988, 6:10 PM MDT (00:10 UTC)
Expired
Jun 8, 1988, 6:40 PM MDT
In force
30 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Adams County, CO, Arapahoe County, CO

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.2 hours before the alert went out and 95 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 1988-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 98 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 1988-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
98 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
3592 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
60 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 090013
TORDEN
COC001-005-090040-
 
BULLETIN...EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
610 PM MDT WED JUN 08 1988
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 640 PM  MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF NORTHEAST COLORADO:
 
     CENTRAL ADAMS
     CENTRAL ARAPAHOE
 
INCLUDING THE FOLLOWING TOWNS/CITIES:
 
     BENNETT STRASBURG AND WATKINS
 
AT 607 PM REPORTS OF TORNADOES BEING SIGHTED NORTHWEST OF THE
TOWN OF BENNETT.  LITTLE MOVEMENT WAS NOTED.
 
IN HOMES GO TO THE BASEMENT OR INTO A CLOSET OR BATHROOM.
IN SCHOOLS..HIGH RISES AND HOSPITALS GO TO AN INTERIOR
HALLWAY ON THE LOWEST FLOOR.  IF IN MOBILE HOMES OR VEHICLES..
EVACUATE THEM AND GO TO A SUBSTANTIAL SHELTER.  IF NO SHELTER
IS AVAILABLE..LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT.
IN ALL CASES..STAY AWAY FROM WINDOWS..DOORS AND OUTSIDE WALLS.
 
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
9AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE
IN DENVER..OR CALL YOUR REPORT TO THE NATIONAL WEATHER SERVICE
AT 361-0663.  DO NOT CALL THIS NUMBER FOR INFORMATION.
 
JLW
LAT..LON  3999 10473 3999 10428 3960 10435 3961 10477

What forecasters said that day

The local office's own words before this tornado 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, Jun 8, 4:43 PM MDT, 1 hour 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
445 PM MDT WED JUN 8 1988

    ...SHOWERS AND THUNDERSTORMS OVER NORTHEAST COLORADO...

SCATTERED SHOWERS AND THUNDERSTORMS WERE RUMBLING ACROSS PORTIONS OF
NORTHEAST COLORADO LATE WEDNESDAY AFTERNOON.  AS OF 445 PM LIMON RADAR
SHOWED THE STRONGEST OF THE STORMS TO BE OVER SOUTHEAST WELD COUNTY NEAR
THE TOWNS OF WIGGINS ROGGENS AND PROSPECT VALLEY...AND ALSO OVER
SOUTHERN LOGAN COUNTY SOUTHEAST OF STERLING.  OTHER STORMS WERE OVER
PARTS OF WASHINGTON AND YUMA COUNTIES.  MOVEMENT OF THE STORMS WAS
TOWARD THE NORTHEAST AT AROUND 10 MPH.

THESE STORMS MAY BE ACCOMPANIED BY BRIEF HEAVY RAINS STRONG GUSTY WINDS
AND HAIL AS THEY AFFECT PORTIONS OF NORTHEAST COLORADO THROUGH EARLY
THIS EVENING.
JLW
Special weather statement, Jun 8, 6:02 PM MDT, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
600 PM MDT WED JUN 8 1988

    ...THUNDERSTORMS DEVELOPING EAST OF DENVER...

AT 6PM RADAR SHOWED THE RAPID DEVELOPMENT OF A LINE OF THUNDERSTORMS
ACROSS SOUTHEAST WELD CENTRAL ADAMS AND CENTRAL ARAPAHOE COUNTIES IN
NORTHEAST COLORADO.  THE STORMS WERE ALIGNED NORTH-SOUTH FROM NEAR
KEENESBURG TO SOUTH OF WATKINS.

DOPPLER RADAR WAS SHOWING THE POTENTIAL FOR CONTINUED DEVELOPMENT OF
THIS LINE OVER THE NEXT HOUR.  PEOPLE NEAR THE TOWNS OF KEENESBURG
PROSPECT-VALLEY WATKINS BENNETT AND STRASBURG AS WELL AS MOTORISTS
TRAVELLING EAST ON I-70 FROM DENVER MAY EXPERIENCE HEAVY RAIN HAIL AND
STRONG GUSTY WINDS WITH THE STORMS UNTIL ABOUT 8PM THIS EVENING.
JLW

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 2:38 PM MDTSevere Thunderstorm WarningBOUBoulder62 min
Jun 9, 2:58 PM MDTSevere Thunderstorm WarningBOULarimer62 min
Jun 9, 4:03 PM MDTSevere Thunderstorm WarningBOUDouglas62 min

Nearby

Tornado Warnings in Colorado, 1988Every tornado warning in 1988Tornadoes in 1988

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.