Alert archive / Colorado / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 140, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 30, 1998, 4:24 PM MDT for Lincoln County, Colorado. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 30, 1998, 4:24 PM MDT (22:24 UTC)
- Expired
- Jul 30, 1998, 5:15 PM MDT
- In force
- 51 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Lincoln County, CO
The radar
The Pueblo radar (KPUX), 82 km from the middle of the area, began a volume at 22:27 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 10.4 hours before the alert went out and 101 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
- 61 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 804 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 30, 11:10 AM MDT, 5 hours 14 minutes before
COZ030-032>050-310600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1110 AM MDT THU JUL 30 1998 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: ABUNDANT MOISTURE WILL REMAIN IN PLACE ACROSS EASTERN COLORADO THROUGH THIS AFTERNOON AND EVENING. THE BEST INSTABILITY WILL BE FOUND IN AND NEAR THE FOOTHILLS WHERE A FEW PEAKS OF SUNSHINE WILL OCCUR. ON THE NORTHEAST PLAINS...THE AIRMASS IS QUITE STABLE AS LOW LEVEL COOL AIR HAS SPREAD IN BEHIND A SURFACE FRONT. AS DAYTIME HEATING REACTS WITH THE MOISTURE IN AND NEAR THE FOOTHILLS...THUNDERSTORMS WILL BE DEVELOPING BY 1 PM. AN UPPER LEVEL DISTURBANCE MOVING TOWARD WESTERN COLORADO NOW WILL ALSO BE APPROACHING BY LATE THIS AFTERNOON TO HELP SPARK THE DEVELOPMENT OF STORMS. WITH ABUNDANT MOISTURE IN PLACE...LOCALLY HEAVY RAINFALL WILL OCCUR IN AND NEAR THE FOOTHILLS. THIS WOULD INCLUDE THE FRONT RANGE FROM CASTLE ROCK AND DENVER NORTHWARD THROUGH FORT COLLINS. SEVERE STORMS AND LARGE HAIL WILL NOT BE A THREAT TODAY GIVEN THE CLOUD COVER AND LIMITED INSTABILITY. HOWEVER...BE ON THE LOOKOUT FOR HEAVY RAINFALL. RAINFALL RATES WITH THE STRONGER STORMS MAY EXCEED 2 INCHES PER HOUR. A FLASH FLOOD WATCH MAY BE REQUIRED FOR THE FOOTHILLS AND FRONT RANGE CITIES LATER THIS AFTERNOON. SPOTTER ACTIVATION FOR SEVERE WEATHER WILL NOT BE REQUIRED TODAY. HOWEVER...ANY REPORTS OF HEAVY RAINFAVLL WOULD BE GREATLY APPRECIATED. BARJENBRUCH
Special weather statement, Jul 30, 11:10 AM MDT, 5 hours 14 minutes before
COZ030-032>050-310600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1110 AM MDT THU JUL 30 1998 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: ABUNDANT MOISTURE WILL REMAIN IN PLACE ACROSS EASTERN COLORADO THROUGH THIS AFTERNOON AND EVENING. THE BEST INSTABILITY WILL BE FOUND IN AND NEAR THE FOOTHILLS WHERE A FEW PEAKS OF SUNSHINE WILL OCCUR. ON THE NORTHEAST PLAINS...THE AIRMASS IS QUITE STABLE AS LOW LEVEL COOL AIR HAS SPREAD IN BEHIND A SURFACE FRONT. AS DAYTIME HEATING REACTS WITH THE MOISTURE IN AND NEAR THE FOOTHILLS...THUNDERSTORMS WILL BE DEVELOPING BY 1 PM. AN UPPER LEVEL DISTURBANCE MOVING TOWARD WESTERN COLORADO NOW WILL ALSO BE APPROACHING BY LATE THIS AFTERNOON TO HELP SPARK THE DEVELOPMENT OF STORMS. WITH ABUNDANT MOISTURE IN PLACE...LOCALLY HEAVY RAINFALL WILL OCCUR IN AND NEAR THE FOOTHILLS. THIS WOULD INCLUDE THE FRONT RANGE FROM CASTLE ROCK AND DENVER NORTHWARD THROUGH FORT COLLINS. SEVERE STORMS AND LARGE HAIL WILL NOT BE A THREAT TODAY GIVEN THE CLOUD COVER AND LIMITED INSTABILITY. HOWEVER...BE ON THE LOOKOUT FOR HEAVY RAINFALL. RAINFALL RATES WITH THE STRONGER STORMS MAY EXCEED 2 INCHES PER HOUR. A FLASH FLOOD WATCH MAY BE REQUIRED FOR THE FOOTHILLS AND FRONT RANGE CITIES LATER THIS AFTERNOON. SPOTTER ACTIVATION FOR SEVERE WEATHER WILL NOT BE REQUIRED TODAY. HOWEVER...ANY REPORTS OF HEAVY RAINFAVLL WOULD BE GREATLY APPRECIATED. BARJENBRUCH
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 6:01 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 29 min |
| Jul 29, 6:32 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 43 min |
| Jul 29, 7:13 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 32 min |
| Jul 29, 7:39 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 36 min |
| Jul 30, 1:41 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson, Park | 34 min |
| Jul 30, 3:00 PM MDT | Flash Flood Warning | BOU | Arapahoe, Douglas | 3 hr |
| Jul 30, 4:22 PM MDT | Flash Flood Warning | BOU | Elbert, Lincoln | 2 hr |
| Jul 30, 5:00 PM MDT | Flash Flood Warning | BOU | Park | 2 hr |
| Jul 30, 5:14 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 46 min |
| Jul 30, 5:25 PM MDT | Flash Flood Warning | BOU | Elbert, Lincoln | 2 hr |
Nearby
Severe Thunderstorm Warnings in Colorado, 1998Every severe thunderstorm warning in 1998
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; radar from the NEXRAD Level II archive.