Alert archive / Colorado / Tornado Warnings in 2007

Tornado Warning 32, NWS Denver/Boulder, CO

May 5, 2007Logan County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 5, 2007, 12:37 PM MDT for Logan County, Colorado. It was in force for 28 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 5, 2007, 12:37 PM MDT (18:37 UTC)
Expired
May 5, 2007, 1:05 PM MDT
In force
28 min
Issued by
NWS Denver/Boulder, CO
Area
Counties, with a storm outline in the text

County Logan County, CO

The radar

The Denver radar (KFTG), 135 km from the middle of the area, began a volume at 18:37 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, 6.6 hours before the alert went out and 81 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 2007-05-05Temperature 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 2007-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.193958Sfc1 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
657 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
89 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 051838
TORBOU
COC075-051915-
/O.NEW.KBOU.TO.W.0032.070505T1837Z-070505T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
1237 PM MDT SAT MAY 5 2007

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

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

* UNTIL 115 PM MDT

* AT 1237 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES
  NORTHEAST OF MERINO...OR ABOUT 10 MILES SOUTHWEST OF STERLING. RADAR
  ALSO INDICATES ANOTHER STRONG STORM WITH A POSSIBLE TORNADO 
  NEAR PAWNEE PASS ON HIGHWAY 14.  ANOTHER STRONG STORM CONTINUES TO 
  MOVE NORTHEAST ALONG I-76 NEAR ILIFF.  ALL STORMS ARE MOVING NORTHEAST
  AT 20 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WILLARD...
  WESTPLAINS...PROCTOR...PAWNEE PASS...PADRONI...NORTH STERLING
  RESERVOIR...MERINO...LOGAN CORNERS...ILIFF...ATWOOD AND STERLING.

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.

LAT...LON 4044 10347 4044 10303 4087 10287 4089 10357
      4052 10355 4053 10347

$$
2 follow-up statements
000 
WWUS55 KBOU 051849
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
1247 PM MDT SAT MAY 5 2007

COC075-051915-
/O.CON.KBOU.TO.W.0032.000000T0000Z-070505T1915Z/
LOGAN CO-
1247 PM MDT SAT MAY 5 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 115 PM MDT FOR LOGAN
COUNTY...

AT 1247 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
STORM WAS LOCATED NEAR ATWOOD...OR ABOUT 7 MILES SOUTHWEST OF
STERLING. THIS STORM WAS MOVING NORTHEAST AT 20 MPH.  ANOTHER SEVERE 
STORM CAPABLE OF PRODUCING A TORNADO CONTINUED TO MOVE NORTHEAST ALONG
I-76 ABOUT 3 MILES SOUTHWEST OF PROCTOR.  THIS STORM IS ALSO MOVING
NORTHEAST AT 20 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILLARD...WESTPLAINS...PROCTOR...PAWNEE PASS...PADRONI...NORTH
STERLING RESERVOIR...MERINO...LOGAN CORNERS...ILIFF...ATWOOD AND
STERLING.

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 SAFE
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER
YOUR HEAD.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

LAT...LON 4044 10347 4044 10303 4087 10287 4089 10357
      4052 10355 4053 10347

$$
000 
WWUS55 KBOU 051905
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
105 PM MDT SAT MAY 5 2007

COC075-051915-
/O.CAN.KBOU.TO.W.0032.000000T0000Z-070505T1915Z/
LOGAN CO-
105 PM MDT SAT MAY 5 2007

...THE TORNADO WARNING FOR LOGAN COUNTY IS CANCELLED...

THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND IS NO
LONGER EXPECTED TO PRODUCE SEVERE WEATHER.

LAT...LON 4044 10347 4044 10303 4087 10287 4089 10357
      4052 10355 4053 10347

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 6:21 PM MDTSevere Thunderstorm WarningBOUArapahoe39 min
May 4, 6:39 PM MDTSevere Thunderstorm WarningBOULincoln38 min
May 4, 6:41 PM MDTTornado WarningBOUArapahoe31 min
May 4, 6:58 PM MDTTornado WarningBOUWashington47 min
May 4, 8:15 PM MDTTornado WarningBOULincoln45 min
May 4, 8:42 PM MDTTornado WarningBOUElbert, Lincoln48 min
May 4, 8:44 PM MDTTornado WarningBOUWashington46 min
May 4, 9:00 PM MDTTornado WarningBOULincoln45 min
May 4, 9:28 PM MDTTornado WarningBOULincoln47 min
May 4, 9:32 PM MDTTornado WarningBOUWashington43 min
May 4, 10:15 PM MDTTornado WarningBOULincoln30 min
May 4, 11:00 PM MDTSevere Thunderstorm WarningBOUPhillips, Sedgwick60 min
May 4, 11:22 PM MDTTornado WarningBOUPhillips, Sedgwick38 min
May 5, 11:25 AM MDTSevere Thunderstorm WarningBOULogan16 min
May 5, 11:58 AM MDTTornado WarningBOULogan47 min
May 5, 4:01 PM MDTTornado WarningBOUAdams29 min

Nearby

Tornado Warnings in Colorado, 2007Every tornado warning in 2007Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.