Alert archive / Colorado / Tornado Warnings in 1988
Tornado Warning 20, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 8, 1988, 5:35 PM MDT for Logan County, Colorado. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jul 8, 1988, 5:35 PM MDT (23:35 UTC)
- Expired
- Jul 8, 1988, 6:05 PM MDT
- In force
- 30 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Logan 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 12:00Z, 11.6 hours before the alert went out and 96 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
- 748 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 1040 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 082337
TORDEN
COC075-090005-
BULLETIN...EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
535 PM MDT FRI JUL 08 1988
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 605 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF NORTHEAST COLORADO:
LOGAN
INCLUDING THE FOLLOWING TOWNS/CITIES:
ATWOOD..CROOK..FLEMING..ILIFF..PEETZ..STERLING..AND WILLARD
THE STORM WAS LOCATED 5 MILES WEST OF ILIFF..WHICH IS 7 MILES
NORTH OF STERLING.
AT 5305 TORNADOS WERE REPORTED ON THE GROUND NORTHWEST OF STERLING AND
ANOTHER NEAR MARINO.
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM.
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 4099 10357 4097 10273 4046 10274 4045 10361What 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 8, 1:36 PM MDT, 3 hours 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 140 PM MDT FRI JUL 8 1988 ...FLASH FLOOD WATCH FOR EASTERN FOOTHILLS AREA UNTIL 9PM... ...TORNADO WATCH FOR MUCH OF EASTERN COLORADO UNTIL 9PM... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MUCH OF THE EASTERN FOOTHILLS AREA OF COLORADO UNTIL 9PM. AT 130PM THUNDERSTORMS WERE DEVELOPING NEAR THE EASTERN FOTHILLS AND MOVING SLOWLY TOWARD THE EAST. SOME OF THESE STORMS WILL PRODUCE TWO INCHES OR MORE OF RAIN IN A SHORT TIME. THIS WILL CAUSE FLASH FLOODING OF SMALL STREAMS IN THE WATCH AREA...AS WELL AS SEVERELY IMPACTING ROADS...UNDERPASSES AND OTHER LOW LYING AREAS. THIS IS A POTENTIALLY DANGEROUS SITUATION. PERSONS IN THE WATCH AREA SHOULD BE ALERT FOR SWIFT MOVING CURRENTS IN SMALL STREAMS...WITH OVERBANK CONDITIONS IN SOME LOCATIONS. MOTORISTS IN PARTICULAR SHOULD WATCH FOR LARGE AMOUNTS OF STANDING WATER ON ROADS AND IN LOW LYING AREAS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WATCH AREA UNTI 9PM THIS EVENING. LARGE HAIL...STRONG WINDS AND A FEW TORNADOES MAY OCCUR IN IN THE WATCH AREA WITH OR WITHOUT HEAVY RAIN. TUNNELL
Special weather statement, Jul 8, 3:15 PM MDT, 2 hours 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 315 PM MDT FRI JUL 8 1988 ...FLASH FLOOD WATCH AND TORNADO WATCH REMAIN IN EFFECT... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR PORTINS OF THE EASTERN FOOTHILLS OF COLORADO UNTIL 9PM. A TORNADO WATCH IS STILL IN EFFECT FOR MUCH OF EASTERN COLORADO UNTIL 9PM. A FUNNEL CLOUD WAS REPORTED NEAR KIOWA AROUND 2PM AND LOCALLY HEAVY RAINS HAVE OCCURRED IN PARTS OF THE FLASH FLOOD WATCH AREA...AS WELL AS AREAS OF DOUGLAS...EL PASO...AND KIOWA COUNTIES. HEAVIEST THUNDERSTORM ACTIVITY AT 315PM WAS IN ELBERT COUNTY WITH STRONG STORMS ALSO IN EASTERN ADAMS AND EASTERN ARAPAHOE COUNTIES. THESE STORMS WERE ALMOST STATIONARY. A DISTURBANCE MOVING INTO THE AREA FROM THE WEST IS EXPECTED TO INCREASE THUNDERSTORM AND HEAVY RAIN ACTIVITY LATER THIS AFTERNOON. TUNNELL
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 6:14 PM MDT | Tornado Warning | BOU | Weld | 31 min |
| Jul 7, 7:04 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 61 min |
| Jul 7, 7:17 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 58 min |
| Jul 8, 3:49 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 31 min |
| Jul 8, 5:11 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 59 min |
| Jul 8, 5:17 PM MDT | Tornado Warning | BOU | Adams | 33 min |
| Jul 8, 5:53 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 32 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.