Alert archive / Colorado / Tornado Warnings in 2008

Tornado Warning 16, NWS Denver/Boulder, CO

May 23, 2008Morgan County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 23, 2008, 4:31 PM MDT for Morgan County, Colorado. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 23, 2008, 4:31 PM MDT (22:31 UTC)
Expired
May 23, 2008, 5:15 PM MDT
In force
44 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon

County Morgan County, CO

The radar

The Denver radar (KFTG), 86 km from the middle of the area, began a volume at 22:34 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.

IssuedProductOfficeLasted
May 23, 12:41 PM MDTTornado WatchSPC6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.5 hours before the alert went out and 67 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2008-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2008-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
974 m above ground
0-6 km bulk shear
87 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
149 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.

000 
WFUS55 KBOU 232231
TORBOU
COC087-232315-
/O.NEW.KBOU.TO.W.0016.080523T2231Z-080523T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
431 PM MDT FRI MAY 23 2008

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  MORGAN COUNTY IN NORTHEAST COLORADO

* UNTIL 515 PM MDT

* AT 431 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
  NORTHWEST OF ADENA SCHOOL...OR 6 MILES SOUTH OF FORT MORGAN. THIS
  STORM WAS MOVING NORTH AT 41 MPH.  ANOTHER POSSIBLE TORNADO
  WAS LOCATED NORTH OF WELDONA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WELDONA...
  TWELVE-MILE CORNER...SNYDER...LOG LANE VILLAGE...JACKSON
  RESERVOIR...GOODRICH...GARY...FORT MORGAN...BRUSH...ANTELOPE
  SPRINGS...ADENA SCHOOL AND ADENA.

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 SAFE SHELTER IS AVAILABLE...LIE FLAT IN
THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR
HANDS.

LAT...LON 4000 10348 4001 10397 4052 10415 4053 10414
      4053 10368 4052 10360
TIME...MOT...LOC 2231Z 173DEG 36KT 4024 10384

$$
BARJENBRUCH
2 follow-up statements
000 
WWUS55 KBOU 232301
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
501 PM MDT FRI MAY 23 2008

COC087-232315-
/O.CON.KBOU.TO.W.0016.000000T0000Z-080523T2315Z/
MORGAN CO-
501 PM MDT FRI MAY 23 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR NORTH
CENTRAL MORGAN COUNTY...

AT 501 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
STORM WAS LOCATED 10 MILES NORTHWEST OF ANTELOPE SPRINGS...OR 18
MILES NORTH OF FORT MORGAN. THIS STORM WAS MOVING NORTH AT 41 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ANTELOPE SPRINGS.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM MDT FRIDAY EVENING FOR
NORTHEASTERN COLORADO.

LAT...LON 4038 10367 4032 10391 4052 10398 4053 10384
      4052 10383 4052 10369 4052 10368
TIME...MOT...LOC 2301Z 173DEG 36KT 4052 10389

$$
BARJENBRUCH
000 
WWUS55 KBOU 232312
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
512 PM MDT FRI MAY 23 2008

COC087-232321-
/O.EXP.KBOU.TO.W.0016.000000T0000Z-080523T2315Z/
MORGAN CO-
512 PM MDT FRI MAY 23 2008

...THE TORNADO WARNING FOR NORTH CENTRAL MORGAN COUNTY WILL EXPIRE AT
515 PM MDT...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND MOVED NORTH
OF MORGAN COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM MDT FRIDAY EVENING FOR
NORTHEASTERN COLORADO.

LAT...LON 4038 10367 4032 10391 4052 10398 4053 10384
      4052 10383 4052 10369 4052 10368
TIME...MOT...LOC 2311Z 173DEG 36KT 4062 10391

$$
BARJENBRUCH

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 4:14 AM MDTFlash Flood WatchBOUBoulder, Larimer, Weld15 hr
May 23, 3:35 PM MDTTornado WarningBOUWeld25 min
May 23, 3:49 PM MDTTornado WarningBOUMorgan41 min
May 23, 3:54 PM MDTTornado WarningBOUWeld21 min
May 23, 4:01 PM MDTSevere Thunderstorm WarningBOULarimer42 min
May 23, 4:22 PM MDTTornado WarningBOUWeld38 min
May 23, 5:47 PM MDTSevere Thunderstorm WarningBOUWeld16 min

Nearby

Tornado Warnings in Colorado, 2008Every tornado warning in 2008Tornadoes in 2008

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.