Alert archive / Colorado / Tornado Warnings in 1998
Tornado Warning 19, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 15, 1998, 7:22 PM MDT for Morgan County, Colorado. It was in force for 33 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
- Jul 15, 1998, 7:22 PM MDT (01:22 UTC)
- Expired
- Jul 15, 1998, 7:55 PM MDT
- In force
- 33 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Morgan County, CO
The radar
The Denver radar (KFTG), 80 km from the middle of the area, began a volume at 01:24 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.4 hours before the alert went out and 287 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
- 901 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 2298 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 160122 RRA
TORDEN
COC087-160155-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
722 PM MDT WED JUL 15 1998
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN MORGAN COUNTY IN NORTHEAST COLORADO
* UNTIL 755 PM MDT
* AT 718 PM MDT...WEATHER SERVICE DOPPLER RADAR HAS DETECTED A
POSSIBLE TORNADO 2 MILES NORTHEAST OF ADENA SCHOOL...OR ABOUT 9
MILES SOUTH OF FORT MORGAN...MOVING EAST AT 25 MILES PER HOUR.
FORT MORGAN POLICE AS OF 715 PM ALSO REPORTED ROTATION IN THE CLOUDS
OVER THE CITY OF FORT MORGAN. IN ADDITION...THE PUBLIC REPORTED A FUNNEL
CLOUD NEAR THE TOWN OF BRUSH IN SOUTHEAST MORGAN COUNTY.
LOCATIONS IN THE WARNING INCLUDE...ADENA SCHOOL...BRUSH...FORT
MORGAN...GARY...HILLROSE...LOG LANE VILLAGE...SNYDER AND TWELVE-MILE
CORNER.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A C&ULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
BAKER
LAT...LON 4031 10398 4000 10391 4001 10349 4034 10347The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 6:01 PM MDT | Tornado Warning | BOU | Weld | 29 min |
| Jul 15, 6:16 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 29 min |
| Jul 15, 6:47 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Washington | 28 min |
| Jul 15, 6:55 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 60 min |
| Jul 15, 8:10 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln, Washington | 35 min |
Nearby
Tornado Warnings in Colorado, 1998Every tornado warning in 1998Tornadoes 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.