Alert archive / Colorado / Tornado Warnings in 1991
Tornado Warning 43, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 22, 1991, 6:34 PM MDT for Logan County, Washington County, Colorado. It was in force for 26 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 22, 1991, 6:34 PM MDT (00:34 UTC)
- Expired
- Jun 22, 1991, 7:00 PM MDT
- In force
- 26 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Logan County, CO, Washington County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 7:00 PM MDT | Hail 1.75 | Logan, CO |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.6 hours before the alert went out and 54 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
- 144 J/kg
- Mixed-layer CIN
- -186 J/kg
- Mixed-layer LCL
- 2689 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 230036
TORDEN
COC075-121-230100-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
634 PM MDT SAT JUN 22 1991
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A TORNADO
WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN NORTHEASTERN COLORADO
SOUTHERN LOGAN AND NORTHERN WASHINGTON
INCLUDING THE FOLLOWING TOWNS/CITIES
MERINO
AT 634 PM MDT THE SPOTTERS REPORTED A TORNADO 4 MILES EAST OF
MERINO...OR ABOUT 13 MILES SOUTH OF STERLING.
THE STORM PRODUCING THE TORNADO WAS MOVING SOUTHEAST AT 15 MILES AN
HOUR.
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET
UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO
BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY
FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN
THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH
YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT FOR NORTHEAST COLORADO UNTIL 1100 PM
MDT.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
RTG/RAW
LAT...LON 4028 10295 4027 10333 4054 10339 4059 10290What 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 22, 1:13 PM MDT, 5 hours 21 minutes before
COZ011-012-014-015-016-222000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 110 PM MDT SAT JUN 22 1991 ...TORNADO WATCH IN EFFECT FOR PORTIONS OF EASTERN COLORADO UNTIL 900 PM MDT... THE NATIONAL SEVERE STORMS FORECAST CENTER IN KANSAS CITY HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EASTERN COLORADO UNTIL 900 PM MDT THIS AFTERNOON AND EVENING. THIS WATCH INCLUDES THE FRONT RANGE...PIKES PEAK/PALMER DIVIDE...NORTHEAST PLAINS...SOUTHEAST FOOTHILLS...AND THE SOUTHEAST PLAINS. THIS WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOS AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. AT 110 PM NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED STRONG THUNDERSTORMS WITH HEAVY RAIN BEGINNING TO DEVELOP OVER THE MOUNTAINS. THE STRONGEST THUNDERSTORM WAS LOCATED OVER SOUTHERN LARIMER COUNTY OVER GLEN HAVEN ABOUT 10 MILES NORTHEAST OF ESTES PARK. THE STORM WAS MOVING NORTHEAST AT 20 TO 25 MPH. THE EXPECTED SEVERE WEATHER TODAY IS THE RESULT OF PLENTY OF MOISTURE AND FAVORABLE SURFACE AND UPPER ATMOSPHERIC WINDS. PEOPLE IN PORTIONS OF EASTERN COLORADO SHOULD BE ALERT TO THE POSSIBILITY OF TORNADOS AND SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING. BE ON THE LOOKOUT FOR TORNADOS...3/4 INCH HAIL OR GREATER...WINDS IN EXCESS OF 58 MPH...AND HEAVY RAIN. CONTINUE TO STAY ABREAST OF THE LATEST WEATHER INFORMATION. CONTINUE TO LISTEN TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR TELEVISION FOR FURTHER STATEMENTS OR WARNINGS. HOLMES
Special weather statement, Jun 22, 1:54 PM MDT, 4 hours 40 minutes before
COZ011-222100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 153 PM MDT SAT JUN 22 1991 ...THUNDERSTORMS DEVELOPING OVER WESTERN DENVER METRO AREA... AT 145 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED THUNDERSTORMS DEVELOPING OVER THE WESTERN PORTION OF THE DENVER METRO AREA. THE STORMS WERE MOVING NORTHEAST AT 25 MPH. PEOPLE IN LITTLETON...COMMERCE CITY...DENVER AND BRIGHTON SHOULD BE ALERT FOR GUSTY WINDS...BRIEF HEAVY RAIN AND HAIL UNTIL AROUND 300 PM. CONTINUE TO MONITOR COMMERCIAL MEDIA...AS WELL AS NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. A TORNADO WATCH IS IN EFFECT FOR MUCH OF EASTERN COLORADO...INCLUDING THE DENVER METRO AREA UNTIL 9PM MDT TONIGHT. LESZCYNSKI
Special weather statement, Jun 22, 2:07 PM MDT, 4 hours 27 minutes before
COZ011-222100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 207 PM MDT SAT JUN 22 1991 ...THUNDERSTORMS MOVING INTO DENVER... AT 156 PM MDT MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED TWO THUNDERSTORMS INTENSIFYING AS THEY MOVE INTO THE DENVER METRO AREA. ONE THUNDERSTORM WAS LOCATED OVER ARVADA...WITH A SECOND STORM OVER SOUTHWEST DENVER. THESE STORMS WERE MOVING NORTHEAST AT 10 TO 15 MPH. A PUBLIC REPORT OF A FUNNEL CLOUD WAS REPORTED NEAR EDGEWATER AT 2 PM MDT...WITH A SECOND FUNNEL REPORTED AT 100TH AND LOWELL IN WESTMINSTER AT 205 PM. THE ENTIRE FRONT RANGE CONTINUES UNDER A TORNADO WATCH UNTIL 9 PM MDT...SO RESIDENTS ALONG THE FRONT RANGE SHOULD CLOSELY MONITOR THE WEATHER THIS AFTERNOON...AND BE PREPARED TO TAKE COVER FROM THUNDERSTORMS. TORNADOES AND LARGE HAIL MAY BE POSSIBLE. RTG
Special weather statement, Jun 22, 5:45 PM MDT, 49 minutes before
COZ011-012-013-230100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 545 PM MDT SAT JUN 22 1991 ...PART OF TORNADO WATCH CANCELLED... PART OF TORNADO WATCH NUMBER 577 HAS BEEN CANCELLED. COUNTIES NO LONGER INCLUDED IN THE TORNADO WATCH ARE... BOULDER...DENVER...DOUGLAS...JEFFERSON...WESTERN AND CENTRAL ADAMS... WESTERN AND CENTRAL ARAPAHOE...WESTERN AND CENTRAL WELD...LARIMER... FREMONT...TELLER...WESTERN AND CENTAL ELBERT...EL PASO...SOUTHWESTERN LINCOLN...CROWLEY...CUSTER...HUERFANO...WESTERN AND CENTRAL LAS ANIMAS ...OTERO...AND PUEBLO. CITIES AND TOWNS NO LONGER IN THE TORNADO WATCH ARE... TRINIDAD...WALSENBURG...LA JUNTA...ORDWAY...PUEBLO...CANON CITY... COLORADO SPRINGS...WOODLAND PARK...KIOWA...CASTLE ROCK...CONIFER... BENNETT...METRO DENVER...BOULDER...GREELEY...AND FORT COLLINS. TORNADO WATCH NUMBER 577 CONTINUES FOR THE FOLLOWING COUNTIES UNTIL 9PM...EASTERN ELBERT...CENTRAL LINCOLN...WESTERN BENT...~EXTREME WESTERN KIOWA...AND EASTERN LAS ANIMAS. TOWNS AND CITIES STILL IN THE WATCH AREA ARE...LIMON...FORT MORGAN...AND LAS ANIMAS. IN ADDITION...ANOTHER TORNADO WATCH IS CONTINUING FOR EXTREME NORTHEAST COLORADO UNTIL 11PM. HOLZINGER
Special weather statement, Jun 22, 6:15 PM MDT, 19 minutes before
COZ012-013-017-230130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 615 PM MDT SAT JUN 22 1991 ...REST OF TORNADO WATCH NUMBER 577 CANCELLED WHILE TORNADO AND SEVERE THUNDERSTORM WATCHES CONTINUE IN EXTREME EASTERN COLORADO... THE REMAINDER OF TORNADO WATCH NUMBER 577 HAS BEEN CANCELLED. THIS MEANS THAT THE FOLLOWING COUNTIES ARE NO LONGER IN THE WATCH AREA...ELBERT...LINCOLN...WESTERN BENT...EXTREME WESTERN KIOWA... AND EASTERN LAS ANIMAS. TOWNS AND CITIES NO LONGER IN THE WATCH AREA ARE...LIMON...FORT MORGAN...AND LAS ANIMAS. A TORNADO WATCH CONTINUES UNTIL 11PM FOR EXTREME NORTHEAST COLORADO... WHILE A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 11PM FOR EXTREME EAST CENTRAL AND EXTREME SOUTHEAST COLORADO. HOLZINGER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 6:59 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 46 min |
| Jun 22, 7:49 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 41 min |
| Jun 22, 8:02 PM MDT | Tornado Warning | BOU | Washington | 28 min |
| Jun 22, 8:31 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 29 min |
Nearby
Tornado Warnings in Colorado, 1991Every tornado warning in 1991Tornadoes in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.