Alert archive / Colorado / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 103, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 23, 1992, 6:33 PM MDT for Logan County, Morgan County, Weld County, Colorado. It was in force for 27 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
- Jul 23, 1992, 6:33 PM MDT (00:33 UTC)
- Expired
- Jul 23, 1992, 7:00 PM MDT
- In force
- 27 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Logan County, CO, Morgan County, CO, Weld County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 23, 6:36 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 85 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
- 249 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 2707 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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 23, 2:08 PM MDT, 4 hours 25 minutes before
COZ002-004-232100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 209 PM MDT THU JUL 23 1992 ...THUNDERSTORMS MOVING THROUGH ROCKY MOUNTAINS NATIONAL PARK... AT 205 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS DEVELOPING AND MOVING THROUGH THE ROCKY MOUNTAIN NATIONAL PARK AREA IN LARIMER COUNTY. THE STRONGER STORMS WERE LOCATED IN WESTERN LARIMER COUNTY 12 MILES NORTHWEST OF ESTES PARK. THESE WERE MOVING EAST AT ABOUT 15 MPH. THESE THUNDERSTORMS ARE ASSOCIATED WITH A MID-LEVEL WIND SPEED MAXIMUM MOVING ACROSS NORTHERN COLORADO INTO SOUTHEASTERN WYOMING. THUNDERSTORMS WILL CONTINUE THROUGH MOST OF THE AFTERNOON AND COULD PRODUCE HEAVY RAIN...GUSTY WINDS...FREQUENT DANGEROUS LIGHTNING AND SOME SMALL HAIL. PERSONS IN LARIMER COUNTY...AND ESPECIALLY HIKERS AND CAMPERS IN HIGHER ELEVATIONS...SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND SHOULD MOVE TO SAFETY SHOULD THUNDERSTORMS APPROACH. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DELGADO
Special weather statement, Jul 23, 3:00 PM MDT, 3 hours 33 minutes before
COZ012-013-232130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 300 PM MDT THU JUL 23 1992 ...VERY STRONG THUNDERSTORMS IN EXTREME EASTERN ARAPAHOE COUNTY... AT 250 PM MDT...RADAR SHOWED A VERY STRONG THUNDERSTORM ABOUT 13 MILES EAST OF DEER TRAIL IN EXTREME EASTERN ARAPAHOE COUNTY. INTENSE LIGHTNING...VERY HEAVY RAIN...STRONG WINDS AND HAIL ARE LIKELY. THE STORM IS NEARLY STATIONARY...SO PEOPLE IN THIS AREA...INCLUDING THE THE TOWN OF DEER TRAIL AND ON INTERSTATE 70...SHOULD ALSO BE PREPARED FOR LOCALIZED FLOODING. DULONG
Special weather statement, Jul 23, 4:54 PM MDT, 1 hour 39 minutes before
COC005-121-240030- SMALL STREAM FLOOD ADVISORY NATIONAL WEATHER SERVICE DENVER CO 455 PM MDT THU JUL 23 1992 ..SMALL STREAM FLOOD ADVISORY FOR EXTREME EASTERN ARAPAHOE AND EXTREME SOUTHWESTERN WASHINGTON COUNTIES UNTIL 630 PM... THE NATIONAL WEATHER SERVICE HAS ISSUED A SMALL STREAM FLOOD ADVISORY FOR EXTREME EASTERN ARAPAHOE AND EXTREME SOUTHWESTERN WASHINGTON COUNTIES UNITL 630 PM. THE ADVISORY INCLUDES THE AREA FROM COTTONWOOD VALLEY IN EASTERN ARAPAHOE COUNTY TO 5 MILES EAST OF COLORADO HIGHWAY 71 AND FROM THE SOUTHERN COUNTY LINES OF ARAPAHOE AND WASHINGTON COUNTIES TO COLORADO HIGHWAY 36. THIS INCLUDES LAST CHANCE. AT 450 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER EXTREME SOUTHWESTERN WASHINGTON AND EASTERN ARAPAHOE COUNTIES. HEAVY RAIN HAS BEEN FALLING IN THIS AREA...ABOUT 9 MILES SOUTH OF LAST CHANCE...FOR ABOUT 2 HOURS SINCE 230 PM. DOPPLER RADAR RAINFALL ESTIMATES INDICATE 3 TO 4 INCHES OF RAIN HAVE FALLEN IN THIS REGION. THE STORMS CONTINUE TO DEVELOP OVER THIS PART OF THE COUNTIES AND ARE MOVING VERY LITTLE. THUNDERSTORMS ARE EXPECTED TO REMAIN HERE UNTIL AT LEAST 630 PM. PERSONS LIVING IN THIS AREA OR TRAVELLING NEARBY SHOULD BE ON THE LOOKOUT FOR POSSIBLE FLOODING OF ROADS AND LOW-LYING AREAS. BE ESPECIALLY CAREFUL AROUND ANY SMALL STREAMS OR WASHES WHERE WATER COULD RISE QUICKLY. RUNOFF FROM THESE STORMS COULD ALSO MOVE TOWARD COLORADO HIGHWAYS 71 AND 36...CAUSING FLOODING PROBLEMS. STAY TUNED TO NATIONAL WEATHER SERVICE RADIO...COMMERCIAL RADIO OR TELEVISION FOR LATER STATEMENTS OR POSSIBLE WARNINGS. DELGADO
Special weather statement, Jul 23, 5:16 PM MDT, 1 hour 17 minutes before
COZ012-013-240000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 515 PM MDT THU JUL 23 1992 ...LINE OF VERY HEAVY THUNDERSTORMS MOVING EASTWARD INTO LOGAN COUNTY... AT 505 PM MDT...RADAR SHOWED A LINE OF VERY STRONG THUNDERSTORMS IN EXTREME NORTHEAST WELD COUNTY MOVING INTO WESTERN LOGAN COUNTY. BRIEF HEAVY RAIN...INTENSE LIGHTNING AND STRONG WINDS WILL BE LIKELY AS THESE STORMS MOVE THROUGH LOGAN COUNTY BETWEEN NOW AND 6 PM. T<HERE IS ALSO A GOOD CHANCE FOR HAIL. PEOPLE IN EXTREME EASTERN WELD AND NORTHWEST LOGAN COUNTY...ESPECIALLY IN THE TOWNS OF STERLING AND PEETZ...SHOULD BE READY TO TAKE SHELTER AS THIS WEATHER MOVES INTO YOUR LOCALITY. DULONG
Special weather statement, Jul 23, 6:11 PM MDT, 22 minutes before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 6:01 PM MDT | Tornado Warning | BOU | Logan, Morgan, Weld | 29 min |
| Jul 23, 6:33 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 27 min |
| Jul 23, 8:46 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 59 min |
| Jul 23, 9:52 PM MDT | Severe Thunderstorm Warning | BOU | Yuma | 38 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.