Alert archive / Colorado / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 63, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 26, 1998, 5:30 PM MDT for Weld County, Colorado. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- May 26, 1998, 5:30 PM MDT (23:30 UTC)
- Expired
- May 26, 1998, 6:10 PM MDT
- In force
- 40 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Weld County, CO
The radar
The Cheyenne radar (KCYS), 73 km from the middle of the area, began a volume at 23:34 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 26, 2:45 PM MDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.5 hours before the alert went out and 124 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1671 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
405
WUUS1 KDEN 262332 RRA
SVRDEN
COC123-270010-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
530 PM MDT TUE MAY 26 1998
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL WELD COUNTY IN NORTHEAST COLORADO
* UNTIL 610 PM MDT
* AT 528 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER BARNESVILLE...OR ABOUT 14 MILES EAST OF
GREELEY...MOVING NORTHEAST AT 45 MILES PER HOUR.
HAIL UP TO 1 1/2 INCHES IN DIAMETER IS POSSIBLE WITH THIS SEVERE
THUNDERSTORM. BRIEF FUNNEL CLOUDS OR SMALL TORNADOES ARE ALSO POSSIBLE
WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR
IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.
BAKER
LAT...LON 4049 10465 4033 10442 4072 10383 4095 10412What 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, May 26, 4:41 PM MDT, 49 minutes before
COZ046-262315-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
441 PM MDT TUE MAY 26 1998
...THUNDERSTORM IN
EAST CENTRAL ELBERT AND NORTH CENTRAL LINCOLN COUNTIES OF
COLORADO
AT 429 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM 13 MILES NORTHWEST OF LIMON...MOVING NORTHEAST AT 35
MILES PER HOUR.
PERSONS IN OR NEAR LIMON
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE
OF SAFETY IF BAD WEATHER APPROACHES.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.
TASpecial weather statement, May 26, 4:41 PM MDT, 49 minutes before
COZ046-262315-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
441 PM MDT TUE MAY 26 1998
...THUNDERSTORM IN
EAST CENTRAL ELBERT AND NORTH CENTRAL LINCOLN COUNTIES OF
COLORADO
AT 429 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM 13 MILES NORTHWEST OF LIMON...MOVING NORTHEAST AT 35
MILES PER HOUR.
PERSONS IN OR NEAR LIMON
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE
OF SAFETY IF BAD WEATHER APPROACHES.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.
TASpecial weather statement, May 26, 4:48 PM MDT, 42 minutes before
COZ040-043-045-262330-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
448 PM MDT TUE MAY 26 1998
...THUNDERSTORMS IN A LINE MOVING NORTHEAST ACROSS SOUTHWESTERN
WELD...AND NORTH CENTRAL ADAMS COUNTIES OF COLORADO
AT 443 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM ALONG A LINE EXTENDING FROM 7 MILES WEST OF PLATTEVILLE
TO 2 MILES NORTH OF FORT LUPTON IN SOUTH CENTRAL WELD COUNTY WAS MOVING
NORTHEAST AT 20 MILES PER HOUR.
RADAR INDICATED SEVERAL WEAK CIRCULATIONS ALONG THIS LINE WHICH COULD
LEAD TO THE DEVELOPMENT OF FUNNEL CLOUDS AND/OR SMALL BRIEF TORNADOES.
PERSONS IN OR NEAR FORT LUPTON...GILCREST...HUDSON...JOHNSTOWN...
KERSEY...LA SALLE...MILLIKEN...MILTON RESERVOIR...PLATTEVILLE...
PROSPECT VALLEY AND ROGGEN
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE QUICKLY
TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.
BAKERSpecial weather statement, May 26, 4:48 PM MDT, 42 minutes before
COZ040-043-045-262330-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
448 PM MDT TUE MAY 26 1998
...THUNDERSTORMS IN A LINE MOVING NORTHEAST ACROSS SOUTHWESTERN
WELD...AND NORTH CENTRAL ADAMS COUNTIES OF COLORADO
AT 443 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM ALONG A LINE EXTENDING FROM 7 MILES WEST OF PLATTEVILLE
TO 2 MILES NORTH OF FORT LUPTON IN SOUTH CENTRAL WELD COUNTY WAS MOVING
NORTHEAST AT 20 MILES PER HOUR.
RADAR INDICATED SEVERAL WEAK CIRCULATIONS ALONG THIS LINE WHICH COULD
LEAD TO THE DEVELOPMENT OF FUNNEL CLOUDS AND/OR SMALL BRIEF TORNADOES.
PERSONS IN OR NEAR FORT LUPTON...GILCREST...HUDSON...JOHNSTOWN...
KERSEY...LA SALLE...MILLIKEN...MILTON RESERVOIR...PLATTEVILLE...
PROSPECT VALLEY AND ROGGEN
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE QUICKLY
TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.
BAKERSpecial weather statement, May 26, 4:48 PM MDT, 42 minutes before
COZ040-043-045-262330-
SPECIAL WEATHER STATEMENT ...CORRECTION...
NATIONAL WEATHER SERVICE DENVER CO
448 PM MDT TUE MAY 26 1998
...THUNDERSTORMS IN A LINE MOVING NORTHEAST ACROSS SOUTHWESTERN
WELD...AND NORTH CENTRAL ADAMS COUNTIES OF COLORADO
AT 443 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES WEST OF PLATTEVILLE
TO 2 MILES NORTH OF FORT LUPTON IN SOUTH CENTRAL WELD COUNTY WAS MOVING
NORTHEAST AT 20 MILES PER HOUR.
RADAR INDICATED SEVERAL WEAK CIRCULATIONS ALONG THIS LINE WHICH COULD
LEAD TO THE DEVELOPMENT OF FUNNEL CLOUDS AND/OR SMALL BRIEF TORNADOES.
PERSONS IN OR NEAR FORT LUPTON...GILCREST...HUDSON...JOHNSTOWN...
KERSEY...LA SALLE...MILLIKEN...MILTON RESERVOIR...PLATTEVILLE...
PROSPECT VALLEY AND ROGGEN
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE QUICKLY
TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.
BAKERSpecial weather statement, May 26, 4:48 PM MDT, 42 minutes before
COZ040-043-045-262330-
SPECIAL WEATHER STATEMENT ...CORRECTION...
NATIONAL WEATHER SERVICE DENVER CO
448 PM MDT TUE MAY 26 1998
...THUNDERSTORMS IN A LINE MOVING NORTHEAST ACROSS SOUTHWESTERN
WELD...AND NORTH CENTRAL ADAMS COUNTIES OF COLORADO
AT 443 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES WEST OF PLATTEVILLE
TO 2 MILES NORTH OF FORT LUPTON IN SOUTH CENTRAL WELD COUNTY WAS MOVING
NORTHEAST AT 20 MILES PER HOUR.
RADAR INDICATED SEVERAL WEAK CIRCULATIONS ALONG THIS LINE WHICH COULD
LEAD TO THE DEVELOPMENT OF FUNNEL CLOUDS AND/OR SMALL BRIEF TORNADOES.
PERSONS IN OR NEAR FORT LUPTON...GILCREST...HUDSON...JOHNSTOWN...
KERSEY...LA SALLE...MILLIKEN...MILTON RESERVOIR...PLATTEVILLE...
PROSPECT VALLEY AND ROGGEN
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE QUICKLY
TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.
BAKERThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 4:30 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 35 min |
| May 26, 4:58 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Washington | 32 min |
| May 26, 5:03 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 3 hr |
| May 26, 5:58 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 57 min |
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.