Alert archive / Colorado / Tornado Warnings in 1988
Tornado Warning 22, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 9, 1988, 8:12 PM MDT for Arapahoe County, Colorado. It was in force for 13 min.
The area
The counties it named.
The facts
- Issued
- Jul 9, 1988, 8:12 PM MDT (02:12 UTC)
- Expired
- Jul 9, 1988, 8:25 PM MDT
- In force
- 13 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County 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, 2.2 hours before the alert went out and 98 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.
- Mixed-layer CAPE
- 358 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 2116 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 100216
TORDEN
COC005-100240-
BULLETIN...EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
812 PM MDT SAT JUL 09 1988
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 840 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF NORTHEAST COLORADO:
NORTH CENTRAL ARAPAHOE
INCLUDING THE FOLLOWING TOWNS/CITIES:
NEAR INTERSTATE 70 AND MANILLA ROAD NEAR BENNET
THE STORM WAS LOCATED 27 MILES EAST OF DENVER.
AT 811 A TORNADO WAS SIGHTED AND RADAR CONFIRMS THE TORNADO.
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.
INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS..
STAY AWAY FROM HIGH OBJECTS. MOVE INDOORS IF POSSIBLE. WHEN
INDOORS..STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING
TELEPHONES AND ELECTRICAL EQUIPMENT.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY 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.
DUNN
LAT..LON 3973 10466 3975 10440 3964 10441 3963 10468What 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, Jul 9, 2:30 PM MDT, 5 hours 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 130 PM MDT SAT JUL 9 1988 ...TORNADO WATCH FOR MOST OF EASTERN COLORADO TIL 800 PM THIS EVENING... RADAR INDICATED SHOWERS AND THUNDERTORMS CONTINUING OVER THE FOOTHILLS SOUTHWEST OF DENVER NORTH TO THE WYOMING BORDER. THUNDERSTORMS WERE BEGINNING TO DEVELOP IN NORTHERN MORGAN COUNTY AND EASTERN WELD COUNTY 45 TO 65 MILES SOUTHWEST OF STERLING. THE STORMS WERE MOVING TO THE SOUTHEAST AT 20 MPH. OTHER THUNDERSTORMS ARE LIKELY OVER THE EASTERN PLAINS OF COLORADO LATER THIS AFTERNOON AND EVENING. DANGEROUS LIGHTNING...HAIL...BRIEF HEAVY RAIN AND STRONG GUSTY WINDS ARE LIKELY WITH SOME OF THESE STORMS. TWO TO THREE INCHES OF HAIL ON THE GROUND WITH THE HAIL SIZE UP TO 3/4 OF AND INCH AND ABOUT ONE INCH OF RAIN WAS REPORTED BY THE PUBLIC IN IDAHO SPRINGS ABOUT 30 MILES TO THE WEST OF DENVER. IF THREATENING WEATHER IS OBSERVED MOVE QUICKLY TO A PLACE OF SAFETY. IoF NEAR A STREAM AND WATERS BEGIN TO RISE RAPIDLY MOVE QUICKLY TO HIGH GROUND. BALINT
Special weather statement, Jul 9, 4:47 PM MDT, 3 hours 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
445 PM MDT SAT JUL 9 1988
...TORNADO WATCH CANCELLED NORTH OF PALMER DIVIDE...
THE TORNADO WATCH HAS BEEN CANCELLED NORTH OF THE PALMER DIVIDE...THIS
INCLUDES THE DENVER METRO AREA. THE WATCH IS STILL IN EFFECT FROM THE
PALMER DIVIDE SOUTH TO THE ARKANSAS RIVER.
THUNDERSTORMS ARE STILL EXPECTED OVER MUCH OF NORTHEAST COLORADO
TONIGHT. AT 445 PM THE STRONGEST STORMS WERE LOCATEDa OVER NORTHERN WELD
COUNTY BETWEEN GREELEY AND NUNN. VERY SLOW MOVEMENT WITH THESE STORMS
WILL RESULT IN LOCALLY HEAVY RAINS WITH 1 TO 2 INCHES IN LESS THAN AN
HOUR LIKELY.
DUNNSpecial weather statement, Jul 9, 5:25 PM MDT, 2 hours 47 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
520 PM MDT SAT JUL 9 1988
...TORNADO WATCH CANCELLED FOR ALL OF COLORADO...
THE TORNADO WATCH HAS BEEN CANCELLED FOR THE REMAINDER OF COLORADO. A
FEW STRONG THUNDERSTORMS ARE LIKELY THIS EVENING THROUGHOUT EASTERN
COLORADO BUT IT NO LONGER APPEARS THAT SEVERE WEATHER WILL OCCUR.
THE STORMS WILL BE SLOW MOVING AND LOCALLY HEAVY RAIN IS POSSIBLE AS
WELL AS SMALL HAIL AND STRONG WINDS. THE SKIES WILL BEGIN CLEARING LATER
TONIGHT.
DUNNSpecial weather statement, Jul 9, 7:48 PM MDT, 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 745 PM MDT SAT JUL 9 1988 ...STRONG THUNDERSTORM MOVING THROUGH AURORA... A STRONG THUNDERSTORM IS MOVING SOUTH THROUGH AURORA WITH HEAVY RAIN AND SMALL HAIL. THERE HAVE BEEN REPORTS OF MARBLE SIZED HAIL. RADAR INDICATES RAINFALL AMOUNTS BETWEEN 1/2 AND 1 INCH IN LESS THAN AN HOUR WITH THIS STORM. SOME PARTS OF AURORA RECEIVED ABOUT AN INCH OF RAIN EARLIER THIS EVENING FROM A PREVIOUS STORM AND THE ADDITION OF MORE WATER WILL CAUSE FLOODING OF LOW LYING AREAS AND SOME INTERSECTIONS. MOTORISTS SHOULD USE CAUTION OVER THE NEXT COUPLE OF HOURS AND BE PREPARED FOR LOCAL STREET FLOODING. DO NOT DRIVE INTO WATER IF YOU CANNOT DETERMaINE THE DEPTH. DUNN
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.