Alert archive / Colorado / Tornado Warnings in 2000

Tornado Warning 16, NWS Denver/Boulder, CO

July 5, 2000Logan County, Phillips County, Sedgwick County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jul 5, 2000, 8:28 PM MDT for Logan County, Phillips County, Sedgwick County, Colorado. It was in force for 62 min. 6 reports came from 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, with what was reported inside it.

The facts

Issued: Jul 5, 2000, 8:28 PM MDT (02:28 UTC)
Expired: Jul 5, 2000, 9:30 PM MDT
In force: 62 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO

The radar

The Goodland radar (KGLD), 180 km from the middle of the area, began a volume at 02:28 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.

What was reported inside it

Time	Report	Where
Jul 5, 8:45 PM MDT	Hail 4.5	Crook, CO
Jul 5, 8:50 PM MDT	Hail 2.75	Crook, CO
Jul 5, 9:10 PM MDT	Tornado F3	Dailey, CO
Jul 5, 9:10 PM MDT	Hail 1	Dailey, CO
Jul 5, 9:30 PM MDT	Hail 0.75	Haxtun, CO
Jul 5, 9:35 PM MDT	Hail 1.75	Haxtun, 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 5, 5:45 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.5 hours before the alert went out and 112 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: 120 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 3637 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 102 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.

219 
WFUS55 KBOU 060230
TORDEN
COC075-095-115-060330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
828 PM MDT WED JUL 5 2000

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN LOGAN COUNTY IN NORTHEAST COLORADO
  NORTHWESTERN PHILLIPS COUNTY IN NORTHEAST COLORADO
  WESTERN SEDGWICK COUNTY IN NORTHEAST COLORADO

* UNTIL 930 PM MDT

* AT 828 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO 3 MILES EAST OF CROOK...OR
  ABOUT 23 MILES SOUTHEAST OF SIDNEY...MOVING SOUTHEAST AT 15 MPH.

LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...TWIN
BUTTES...SEDGWICK...MARKS BUTTE...HAXTUN...FLEMING...FAIRFIELD AND
CROOK

SPOTTERS HAVE REPORTED FUNNEL CLOUDS NORTH OF CROOK AND GOLF BALL SIZE 
HAIL BETWEEN CROOK AND SEDGWICK.  

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO STRUCTURE
IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.

THIS REPACES THE EARLIER TORNADO WARNING FOR PORTIONS OF LOGAN AND 
SEDGWICK COUNTIES.

LAT...LON 4089 10297 4049 10275 4074 10226 4097 10255

GIMMESTAD
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 7:40 PM MDT	Tornado Warning	BOU	Logan, Sedgwick	65 min
Jul 5, 9:14 PM MDT	Tornado Warning	BOU	Logan, Phillips, Sedgwick	46 min
Jul 5, 9:56 PM MDT	Tornado Warning	BOU	Phillips	34 min

Nearby

Tornado Warnings in Colorado, 2000 Every tornado warning in 2000 Tornadoes in 2000

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; radar from the NEXRAD Level II archive.