Alert archive / Colorado / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 49, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 20, 1992, 6:42 PM MDT for Washington County, Colorado. It was in force for 63 min. 2 reports 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 20, 1992, 6:42 PM MDT (00:42 UTC)
- Expired
- Jun 20, 1992, 7:45 PM MDT
- In force
- 63 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Washington County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 20, 7:15 PM MDT | Hail 1.5 | Washington, CO | |
| Jun 20, 7:50 PM MDT | Tornado F0 | Washington, 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, 0.7 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.
- Mixed-layer CAPE
- 1461 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1459 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- -117 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 210045
SVRDEN
COC121-210145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
642 PM MDT SAT JUN 20 1992
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES
IN NORTHEASTERN COLORADO
WASHINGTON
INCLUDING THE FOLLOWING LOCATIONS
AKRON...ANTON...ARICKAREE SCHOOL...BURDETT...COPE...ELBA...
LINDON...MIDWAY...OTIS...PLATNER AND THURMAN
AT 642 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 4 MILES NORTH OF PLATNER ...OR ABOUT 34
MILES SOUTH OF STERLING.
THE STORM WAS MOVING SOUTH AT 15 TO 20 MILES AN 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.
HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS
AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND
RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF
THREATENED BY FLOOD WATERS.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
A TORNADO WATCH REMAINS IN EFFECT FOR...SEVERE THUNDERSTORMS
CAN PRODUCE TaORNADOES WITH LITTLE OR NO ADVANCE WARNING.
PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH
AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.
CUOCO
LAT...LON 3959 10281 3960 10348 4044 10340 4035 10286What 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, Jun 20, 1:10 PM MDT, 5 hours 32 minutes before
COZ011-012-013-202000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 110 PM MDT SAT JUN 20 1992 AT 1PM THUNDERSTORMS WERE DEVELOPING OVER THE FOOTHILLS OF THE FRONT RANGE. THE STRONGEST STORM WAS 5 MILES SOUTHWEST OF EVERGREEN IN JEFFERSON COUNTY...OR 25 MILES SOUTHWEST OF DENVER. THUNDERSTORMS WERE MOVING TOWARD THE EAST AND SOUTHEAST AT ABOUT 10 MPH. THUNDERSTORMS ARE LIKELY TO SPREAD AWAY FROM THE FOOTHILLS AND OUT INTO TH[E PLAINS AFTER 2PM THIS AFTERNOON. SEVERE THUNDERSTORMS ARE A POSSIBILITY. ALSO HEAVY RAIN COULD PRODUCE LOCAL FLOODING. STAY TUNED TO LOCAL NEWS STATIONS AND TO NOAA WEATHER RADIO FOR WEATHER FORECAST UPDATES. HOLZINGER
Special weather statement, Jun 20, 2:08 PM MDT, 4 hours 34 minutes before
COZ011-012-013-202100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 205 PM MDT SAT JUN 20 1992 ...TORNADO WATCH INCLUDING MOST OF NORTHEAST COLORADO... A TORNADO WATCH HAS BEEN ISSUED FOR MOST OF EASTERN COLORARDO UNTIL 8PM. IN NORTHEAST COLORADO THIS WATCH INCLUDES ADAMS...ARAPAHOE... DENVER...DOUGLAS...LOGAN...MORGAN...WASHINGTON...WELD...WESTERN YUMA...EASTERN LARIMER...EASTERN BOULDER...NORTHEASTERN JEFFERSON... AND EXTREME WESTERN PHILLIPS COUNTIES. THUNDERSTORMS WERE CONTINUING TO DEVELOP OVER THE NORTHEAST FOOTHILLS AT 2PM. THE STRONGEST THUNDERSTORM WAS OVER BUFFALO CREEK IN SOUTHERN JEFFERSON COUNTY...30 MILES SOUTHWEST OF DENVER. THIS STORM WAS CONTINUING TO MOVE TOWARD THE SOUTHEAST AT 10 MPH AND IS LIKELY TO BE PRODUCING HEAVY RAIN...HAIL...AND DANGEROUS LIGHTNING. A FEW WEAKER THUNDERSTORMS WERE DEVELOPING FROM JUST WEST OF FORT COLLINS...SOUTHWARD THROUGH SOUTHERN JEFFERSON COUNTY. BE PREPARED TO TAKE SHELTER IF THREATENING WEATHER APPROACHES. STAY TUNED TO LOCAL NEWS STATIONS HOLZINGER
Special weather statement, Jun 20, 2:51 PM MDT, 3 hours 51 minutes before
COZ004-202200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 250 PM MDT SAT JUN 20 1992 ...STRONG THUNDERSTORM IN SOUTH CENTRAL PARK COUNTY... AT 245PM A STRONG THUNDERSTORM WAS LOCATED 5 TO 10 MILES EAST OF HARTSEL IN SOUTH CENTRAL PARK COUNTY...OR 60 MILES SOUTHWEST OF DENVER. THIS STORM HAD JUST DEVELOPED AND WAS MOVING TOWARD THE EAST OR SOUTHEAST AT 10 TO 15 MPH. STRONG WINDS...HAIL...BRIEF HEAVY RAIN...AND FREQUENT DANSGEROUS LIGHTNING ARE POSSIBLE WITH THIS STORM. THIS STORM APPEARS TO BE MOVING TOWARD SPINNEY MOUNTAIN RESERVOIR AND ELEVEN MILE CANYON RESERVOIR. BOATERS SHOULD HEAD FOR SHORE UNTIL THIS STORM PASSES. HOLZINGER
Special weather statement, Jun 20, 3:57 PM MDT, 2 hours 45 minutes before
COZ011-012-013-202300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 355 PM MDT SAT JUN 20 1992 ...THUNDERSTORMS DEVELOPING IN VARIOUS PARTS OF NORTHEAST COLORADO... AT 350PM THUNDERSTORMS WERE DEVELOPING IN VARIOUS PARTS OF NORTHEAST COLORADO. ONE THUNDERSTORM WAS IN CENTRAL LARIMER COUNTY...ABOUT 10 MILES SOUTHEAST OF RUSTIC...OR 25 MILES WEST OF FORT COLLINS. THE NORTHERN PART OF A THUNDERSTORM IN EL PASO COUNTY EXTENDED NORTHWARD TO LARKSPUR IN SOUTHERN DOUGLAS COUNTY...OR 35 MILES SOUTH OF DENVER. ALSO...A FEW THUNDERSTORMS WERE DEVELOPING OVER LOGAN...PHILLIPS... AND SEDGWICK COUNTIES. ALL THUNDERSTORMS ARE MOVING TOWARD THE SOUTHEAST AT 15 TO 25 MPH. BRIEF HEAVY RAIN...FREQUENT LIGHTNING...AND STRONG WINDS ARE LIKELY WITH THESE THUNDERSTORMS. SEVERE THUNDERSTORMS AND POSSIBLE TORNADOS ARE POSSIBLE AS A TORNADO WATCH CONTINUES UNTIL 8PM FOR MOST OF EASTERN COLORADO. BE PREPARED TO MOVE INDOORS IF TH%REATENING WEATHER IS IN YOUR AREA. STAY TUNED TO LOCAL NEWS STATIONS AND TO NOAA WEATHER RADIO FOR UPDATES ON THE LATEST WEATHER. HOLZINGER
Special weather statement, Jun 20, 4:56 PM MDT, 1 hour 46 minutes before
COZ011-012-202300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 455 PM MDT SAT JUN 20 1992 ...STRONG THUNDERSTORMS DEVELOPING IN WELD COUNTY... AT 450PM THUNDERSTORMS WERE DEVELOPING IN WELD COUNTY. ONE THUNDERSTORM WAS NEAR GILCREST...10 MILES SOUTHWEST OF GREELEY. ANOTHER THUNDERSTORM WAS NEAR KERSEY...10 MILES EAST OF GREELEY. THESE THUNDERSTORMS ARE DEVELOPING RAPIDLY AND HAVE THE POTENTIAL TO REACH SEVERE LEVELS OR EVEN PRODUCE A TORNADO. STAY TUNED TO LOCAL NEWS STATIONS AND NOAA WEATHER RADIO IN CASE WARNINGS ARE NEEDED. BE PREPARED TO MOVE INDOORS IF THREATENING WEATHER IS IN YOUR AREA. STAY TUNED TO LOCAL NEWS STATIONS AND TO NOAA WEATHER RADIO FOR UPDAT ES ON THE LATEST WEATHER. A TORNADO WATCH IS CONTINUING FOR A LARGE PART OF EASTERN COLORADO UNTIL 8PM. HOLZINGER
Special weather statement, Jun 20, 5:01 PM MDT, 1 hour 41 minutes before
COZ011-012-202330- SPECIAL WEATHER STATEMENT...CORRECTION TO EXPIRATION TIME NATIONAL WEATHER SERVICE DENVER CO 455 PM MDT SAT JUN 20 1992 ...STRONG THUNDERSTORMS DEVELOPING IN WELD COUNTY... AT 450PM THUNDERSTORMS WERE DEVELOPING IN WELD COUNTY. ONE THUNDERSTORM WAS NEAR GILCREST...10 MILES SOUTHWEST OF GREELEY. ANOTHER THUNDERSTORM WAS NEAR KERSEY...10 MILES EAST OF GREELEY. THESE THUNDERSTORMS ARE DEVELOPING RAPIDLY AND HAVE THE POTENTIAL TO REACH SEVERE LEVELS OR EVEN PRODUCE A TORNADO. STAY TUNED TO LOCAL NEWS STATIONS AND NOAA WEATHER RADIO IN CASE WARNINGS ARE NEEDED. BE PREPARED TO MOVE INDOORS IF THREATENING WEATHER IS IN YOUR AREA. STAY TUNED TO LOCAL NEWS STATIONSD AND TO NOAA WEATHER RADIO FOR UPDATES ON THE LATEST WEATHER. A TORNADO WATCH IS CONTINUING FOR A LARGE PART OF EASTERN COLORADO UNTIL 8PM. HOLZINGER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 6:03 PM MDT | Tornado Warning | BOU | Adams, Weld | 27 min |
| Jun 20, 6:30 PM MDT | Tornado Warning | BOU | Adams | 15 min |
| Jun 20, 7:47 PM MDT | Tornado Warning | BOU | Washington | 43 min |
| Jun 20, 7:57 PM MDT | Tornado Warning | BOU | Washington | 33 min |
| Jun 20, 10:24 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Weld | 21 min |
| Jun 21, 4:02 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer | 43 min |
| Jun 21, 4:51 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 39 min |
| Jun 21, 5:58 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Yuma | 32 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1992Every severe thunderstorm warning in 1992
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.