Alert archive / Colorado / Tornado Warnings in 2007

Tornado Warning 1, NWS Denver/Boulder, CO

March 24, 2007Phillips County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Mar 24, 2007, 4:22 PM MDT for Phillips County, Colorado. It was in force for 38 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 24, 2007, 4:22 PM MDT (22:22 UTC)
Expired: Mar 24, 2007, 5:00 PM MDT
In force: 38 min
Issued by: NWS Denver/Boulder, CO
Area: Counties, with a storm outline in the text

County Phillips County, CO

The radar

The Goodland radar (KGLD), 143 km from the middle of the area, began a volume at 22:24 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.

What was reported inside it

Time	Report	Where	Remark
Mar 24, 4:22 PM MDT	TORNADO	2 Nw Holyoke, CO	STORM MOVING NORTH AT 15 MPH. MULTIPLE VORTEX TORNADO. SIGHTING ALSO JUST NORTHWEST OF HOLYOKE.
Mar 24, 4:22 PM MDT	TORNADO	S Holyoke, CO	STORM MOVING NORTH AT 15 MPH. MULTIPLE VORTEX TORNADO. SIGHTING ALSO JUST NORTHWEST OF HOLYOKE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.4 hours before the alert went out and 110 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: 3 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 126 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 242224
TORBOU
COC095-242300-
/O.NEW.KBOU.TO.W.0001.070324T2222Z-070324T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
422 PM MDT SAT MAR 24 2007

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL PHILLIPS COUNTY IN NORTHEAST COLORADO

* UNTIL 500 PM MDT

* AT 422 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL         
  CLOUD AND TORNADO JUST SOUTH OF HOLYOKE.  THIS STORM WAS MOVING    
  NORTH AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HOLYOKE.

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.

LAT...LON 4047 10235 4054 10213 4072 10223 4064 10249

$$

1 follow-up statement

000 
WWUS55 KBOU 242235
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
433 PM MDT SAT MAR 24 2007

COC095-242300-
/O.CON.KBOU.TO.W.0001.000000T0000Z-070324T2300Z/
PHILLIPS CO-
433 PM MDT SAT MAR 24 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM MDT FOR CENTRAL
PHILLIPS COUNTY...

AT 433 PM MDT...SEVERE WEATHER SPOTTERS CONTINUED TO REPORT A 
TORNADO JUST NORTHWEST OF HOLYOKE.  THE TORNADO HAS A HISTORY OF 
SKIPPING ALONG THE GROUND.  THIS STORM WAS LOCATED 3 MILES NORTH OF 
HOLYOKE AND MOVING NORTH AT 20 MPH.  

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

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.

LAT...LON 4053 10237 4060 10217 4075 10225 4069 10248

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 7:04 PM MDT	Severe Thunderstorm Warning	BOU	Morgan	48 min
Mar 24, 4:58 AM MDT	Snow Advisory	BOU	Park	13 hr
Mar 24, 4:59 PM MDT	Tornado Warning	BOU	Phillips, Sedgwick	48 min

Nearby

Tornado Warnings in Colorado, 2007 Every tornado warning in 2007 Tornadoes in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.