Alert archive / Colorado / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 85, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 11, 1992, 6:30 PM MDT for Morgan County, Weld County, Colorado. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1992, 6:30 PM MDT (00:30 UTC)
- Expired
- Jul 11, 1992, 7:00 PM MDT
- In force
- 30 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Morgan County, CO, Weld County, CO
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.5 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.
- Mixed-layer CAPE
- 4 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 3167 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 59 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 120032
SVRDEN
COC087-123-120100-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
630 PM MDT SAT JUL 11 1992
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES:
IN NORTHEASTERN COLORADO:
EXTREME NORTH CENTRAL MORGAN AND EAST CENTRAL WELD
INCLUDING THE FOLLOWING LOCATIONS:
NEW RAYMER
AT 630 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF NEW RAYMER...OR ABOUT
35 MILES WEST OF STERLING.
THE STORM WAS MOVING EAST-SOUTHEAST AT 10 TO 20 MPH.
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.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
HEITKAMP
LAT...LON 4055 10371 4048 10396 4064 10396 4071 10373What 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, Jul 11, 1:47 PM MDT, 4 hours 43 minutes before
COZ-012-013-112100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 145 PM MDT SAT JUL 11 1992 ...THUNDERSTORMS PRODUCING HEAVY RAINS IN SOUTHERN WASHINGTON COUNTY... A SERIES OF STRONG THUNDERSTORMS HAS DEVELOPED IN THE SOUTHWEST PART OF WASHINGTON COUNTY WITH HEAVY RAINS AROUND LAST CHANCE AND LINDON. AT 130 PM A WEATHER SPOTTER ABOUT 7 MILES SOUTHEAST OF LAST CHANCE REPORTED VERY HEAVY RAIN WITH MOSTLY PEA-SIZED HAIL. FREQUENT DANGEROUS LIGHTNING WAS ALSO OCCURRING. THE THUNDERSTORMS PRODUCING THIS HEAVY RAIN WERE MOVING NORTHEAST AT ABOUT 15 MPH. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES THAT MORE STORMS ARE CONTINUING TO DEVELOP IN SOUTHWEST WASHINGTON COUNTY AND MOVING ALONG THE SAME PATH AS THE INITIAL STORMS. THESE STORMS ARE EXPECTED TO CONTINUE FOR THE NEXT HOUR WITH ADDITIONAL HEAVY RAINS. LOCALIZED FLOODING IS POSSIBLE IN THE VICINITY OF THESE STORMS. DO NOT TRY TO CROSS ROADWAYS COVERED WITH WATER. STAY TUNED TO NOAA WEATHER RADIO OR OTHER NEWS MEDIA FOR LATER STATEMENTS CONCERNING THIS WEATHER SITUATION. DANKERS
Special weather statement, Jul 11, 3:54 PM MDT, 2 hours 36 minutes before
COZ011-112230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 350 PM MDT SAT JUL 11 1992 ...INTENSE THUNDERSTORM IN NORTHERN BOULDER COUNTY... AT 350PM MDT RADAR SHOWED AN INTENSE THUNDERSTORM IN NORTHERN BOULDER COUNTY OVER THE TOWN OF LYONS...11 MILES NORTHWEST OF LONGMONT OR ABOUT 45 MILES SOUTH SOUTHWEST OF FORT COLLINS. THIS THUNDERSTORM IS MOVING EAST SOUTHEAST ABOUT 15 MPH. PEOPLE IN AND NEAR THE TOWN OF LYONS SOUTHEAST TO LONGMONT SHOULD HEAD INDOORS AS THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN... HAIL AND GUSTY WINDS IN ADDITION TO DEADLY LIGHTNING BOLTS. PEOPLE ALONG THE ST. VRAIN CREEK FROM LYONS DOWNSTREAM SHOULD MONITOR WATER LEVELS AS HEAVY RAIN COULD MAKE THE RIVER RISE TO NEAR BANKFULL CONDITIONS IN A VERY SHORT TIME. HEAVY RAIN CAN ALSO CAUSE FLOODING OF STREETS IN LOW LYING AREAS SO DRIVE WITH CAUTION. MONITOR LOCAL NEWS MEDIA OR NOAA WEATHER RADIO FOR ADDITIONAL INFORMATION. GCF
Special weather statement, Jul 11, 5:08 PM MDT, 1 hour 22 minutes before
COZ012-013-014-120000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 510 PM MDT SAT JUL 11 1992 ...SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 9 PM... MUCH OF NORTHEAST COLORADO REMAINS UNDER A SEVER THUNDERSTORM WATCH UNTIL 9 PM. AT 5 PMTHUNDERSTORMS WERE LOCATED IN SOUTHEAST WASHINGTON CAN SOUTHWEST YUMA COUNTIES MOVING EASTWARD AT ABOUT 15 MPH. A FEW THUNDERSTORMS WERE ALSO LOCATED IN NORTHEAST WELD AND NORTHERN LOGAN COUNTIES. THESE STORMS WERE MOVING SLOWLY NORTHEASTWARD. THUNDERSTORMS PRODUCED SMALL HAIL AND GUSTY WINDS EARLIER IN THE AFTERNOON BUT HAVE DECREASED IN INTENSITY IN THE PAST FEW HOURS. BETWEEN 130 PM AND 230 PM...THUNDERSTORMS IN SOUTHERN WASHINGTON COUNTY PRODUCED 3 INCHES OF RAIN NEAR LAST CHANCE...CAUSING SOME LOCAL FLOODING. A SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT FOR SOUTHERN WASHINGTON COUNTY UNTIL 6 PM. THUNDERSTORMS MAY DEVELOP IN WELD AND MORGAN COUNTIES IN THE NEXT COVUPLE HOURS. RESIDENTS IN NORTHEAST COLORADO SHOULD CONTINUE TO MONITOR WEATHER CONDITIONS AND BE PREPARED TO MOVE TO SAFETY IF THREATENING WEATHER APPROACHES. TCD
Special weather statement, Jul 11, 5:11 PM MDT, 1 hour 19 minutes before
COZ012-013-014-120000- SPECIAL WEATHER STATEMENT ...CORRECTIONS IN 1ST PARAGRAPH... NATIONAL WEATHER SERVICE DENVER CO 510 PM MDT SAT JUL 11 1992 ...SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 9 PM... MUCH OF NORTHEAST COLORADO REMAINS UNDER A SEVERE THUNDERSTORM WATCH UNTIL 9 PM. AT 5 PM...THUNDERSTORMS WERE LOCATED IN SOUTHEAST WASHINGTON AND SOUTHWEST YUMA COUNTIES MOVING EASTWARD AT ABOUT 15 MPH. A FEW THUNDERSTORMS WERE ALSO LOCATED IN NORTHEAST WELD AND NORTHERN LOGAN COUNTIES. THESE STORMS WERE MOVING SLOWLY NORTHEASTWARD. THUNDERSTORMS PRODUCED SMALL HAIL AND GUSTY WINDS EARLIER IN THE AFTERNOON BUT HAVE DECREASED IN INTENSITY IN THE PAST FEW HOURS. BETWEEN 130 PM AND 230 PM...THUNDERSTORMS IN SOUTHERN WASHINGTON COUNTY PRODUCED 3 INCHES OF RAIN NEAR LAST CHANCE...CAUSING SOME LOCAL FLOODING. A SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT FOR SOUTHERN WASHINGTON COUNTY UNTIL 6 PM. THUNDERSTORMS MAY DEVEL`OP IN WELD AND MORGAN COUNTIES IN THE NEXT COUPLE HOURS. RESIDENTS IN NORTHEAST COLORADO SHOULD CONTINUE TO MONITOR WEATHER CONDITIONS AND BE PREPARED TO MOVE TO SAFETY IF THREATENING WEATHER APPROACHES. TCD
Special weather statement, Jul 11, 5:53 PM MDT, 37 minutes before
COZ012-013-120020- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 550 PM MDT SAT JUL 11 1992 ...STRONG THUNDERSTORMS IN PORTIONS OF NORTHEAST COLORADO... AT 550 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS IN NORTHERN LOGAN AND NORTHEAST WELD COUNTIES. THE STRONGEST THUNDERSTORM WAS LOCATED JUST NORTH OF PEETZ...OR 25 MILES NORTH OF STERLING. THIS THUNDERSTORM WAS MOVING NORTHEAST AND WILL BE IN NEBRASKA BY 555 PM MDT. HOWEVER...OTHER STRONG STORMS ARE DEVELOPING IN NORTHWEST LOGAN AND NORTHEAST WELD COUNTIES. ALL OF THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING BRIEF HEAVY RAIN...DANGEROUS LIGHTNING AND HAIL. IF YOU ARE IN THE PAWNEE NATIONAL GRASSLAND AREA OR IN NORTHERN LOGAN COUNTY...BE ON THE ALERT FOR THESE STORMS. BE PREPARED TO MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES. A REMINDER...MUCH OF EASTERN COLORADO IS UNDER A SEVERE THUNDERSTORM WATCH UNTIL 9 PM MDT. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR FURTHER UPDATES ON THE WEATHER SITUATION. HEITKAMP
Special weather statement, Jul 11, 6:22 PM MDT, 8 minutes before
COZ012-120045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 620 PM MDT SAT JUL 11 1992 ...STRONG THUNDERSTORMS CONTINUE IN NORTHEAST WELD COUNTY... AT 620 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO SHOW STRONG THUNDERSTORMS BETWEEN THE TOWNS OF BUCKINGHAM AND NEW RAYMER. THE STRONGEST STORM WAS LOCATED 4 MILES EAST OF BUCKINGHAM ...OR 35 MILES WEST OF STERLING. BRIEF HEAVY RAINS...DANGEROUS LIGHTNING...AND HAIL CAN BE EXPECTED WITH THE STORMS AS THEY MOVE EAST-NORTHEAST AT 15 MPH. IF YOU LIVE IN THE TOWNS OF NEW RAYMER AND BUCKINGHAM OR IF YOU ARE DRIVING ON HIGHWAY 14 BETWEEN THOSE TWO TOWNS...BE ON THE LOOKOUT FOR THESE STORMS. BE PREPARED TO MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES. A REMINDER...MUCH OF EASTERN COLORADO IS UNDER A SEVERE THUNDERSTORM WATCH UNTIL 9 PM MDT. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR FURTHER UPDATES ON THE WEATHER SITUATION. HEITKAMP
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:00 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 20 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; the sounding from the Mesonet's radiosonde archive.