Alert archive / Colorado / Tornado Warnings in 1998

Tornado Warning 6, NWS Denver/Boulder, CO

May 24, 1998Arapahoe County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 24, 1998, 1:34 PM MDT for Arapahoe County, Colorado. It was in force for 26 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 24, 1998, 1:34 PM MDT (19:34 UTC)
Expired: May 24, 1998, 2:00 PM MDT
In force: 26 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Arapahoe County, CO

The radar

The Denver radar (KFTG), 18 km from the middle of the area, began a volume at 19:34 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 nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 7.6 hours before the alert went out and 120 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1490 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

865 
WFUS1 KDEN 241935 RRA
TORDEN
COC005-242000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
134 PM MDT SUN MAY 24 1998

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
     WESTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO

* UNTIL 200 PM MDT

* AT 132 PM MDT...AMATEUR RADIO WEATHER SPOTTERS REPORTED A TORNADO
  NEAR SMOKY HILL...OR ABOUT 18 MILES SOUTHEAST OF DOWNTOWN DENVER...
  MOVING NORTHEAST AT 15 MILES PER HOUR.  ANOTHER TORNADO WAS REPORTED 
  NEAR DENVER INTERNATIONAL AIRPORT.  

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3957 10475 3953 10467 3974 10433 3974 10452

BARJENBRUCH

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 10:16 AM MDT	Severe Thunderstorm Warning	BOU	Lincoln, Washington	44 min
May 24, 10:16 AM MDT	Severe Thunderstorm Warning	BOU	Elbert	44 min
May 24, 10:59 AM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	46 min
May 24, 10:59 AM MDT	Severe Thunderstorm Warning	BOU	Washington	46 min
May 24, 1:03 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Douglas, Elbert	42 min
May 24, 1:55 PM MDT	Tornado Warning	BOU	Adams	35 min
May 24, 2:16 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	49 min
May 24, 2:37 PM MDT	Severe Thunderstorm Warning	BOU	Weld	38 min
May 24, 3:07 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	38 min
May 24, 3:15 PM MDT	Tornado Warning	BOU	Lincoln	30 min
May 24, 3:44 PM MDT	Tornado Warning	BOU	Lincoln	31 min
May 24, 4:18 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	27 min

Nearby

Tornado Warnings in Colorado, 1998 Every tornado warning in 1998 Tornadoes 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.