Alert archive / Colorado / Tornado Warnings in 2014

Tornado Warning 12, NWS Denver/Boulder, CO

May 7, 2014Logan County, Phillips County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 7, 2014, 5:30 PM MDT for Logan County, Phillips County, Colorado. It was in force for 30 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 7, 2014, 5:30 PM MDT (23:30 UTC)
Expired: May 7, 2014, 6:00 PM MDT
In force: 30 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Observed
Hail: 1.25 in

Counties Logan County, CO, Phillips County, CO

The radar

The Goodland radar (KGLD), 155 km from the middle of the area, began a volume at 23:33 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.

Issued	Product	Office	Lasted
May 7, 12:37 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 11.5 hours before the alert went out and 90 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: 97 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 776 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 29 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.

182 
WFUS55 KBOU 072330
TORBOU
COC075-095-080000-
/O.NEW.KBOU.TO.W.0012.140507T2330Z-140508T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
530 PM MDT WED MAY 7 2014

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN PHILLIPS COUNTY IN NORTHEAST COLORADO...
  SOUTHEASTERN LOGAN COUNTY IN NORTHEAST COLORADO...

* UNTIL 600 PM MDT

* AT 530 PM MDT...A CONFIRMED TORNADO WAS LOCATED 5 MILES WEST OF
  HIGHLAND CENTER...OR 9 MILES NORTH OF CLARKVILLE...MOVING NORTHEAST
  AT 20 MPH.

  HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL. 

  SOURCE...PUBLIC CONFIRMED TORNADO. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* LOCATIONS IMPACTED INCLUDE...
  HAXTUN...PAOLI...HIGHLAND CENTER AND FAIRFIELD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4044 10276 4070 10283 4074 10250 4045 10244
TIME...MOT...LOC 2330Z 212DEG 16KT 4050 10268 

TORNADO...OBSERVED
HAIL...1.25IN

$$

RJK

2 follow-up statements

526 
WWUS55 KBOU 072340
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
540 PM MDT WED MAY 7 2014

COC075-095-080000-
/O.CON.KBOU.TO.W.0012.000000T0000Z-140508T0000Z/
PHILLIPS CO-LOGAN CO-
540 PM MDT WED MAY 7 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR WESTERN
PHILLIPS AND SOUTHEASTERN LOGAN COUNTIES...
    
AT 540 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER HIGHLAND CENTER...OR 11 MILES NORTH OF CLARKVILLE...
MOVING NORTHEAST AT 25 MPH.

HAZARD...TORNADO AND PING PONG BALL SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
HAXTUN...PAOLI...HIGHLAND CENTER AND FAIRFIELD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4044 10275 4071 10268 4074 10250 4045 10244
TIME...MOT...LOC 2340Z 224DEG 23KT 4055 10260 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

RPK

938 
WWUS55 KBOU 072351
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
551 PM MDT WED MAY 7 2014

COC075-080000-
/O.CAN.KBOU.TO.W.0012.000000T0000Z-140508T0000Z/
LOGAN CO-

551 PM MDT WED MAY 7 2014

...THE TORNADO WARNING FOR SOUTHEASTERN LOGAN COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED INTO 
SOUTHWEST PHILLIPS COUNTY.  THUS THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM MDT
WEDNESDAY EVENING FOR NORTHEAST COLORADO.

LAT...LON 4044 10266 4071 10265 4074 10250 4045 10244
TIME...MOT...LOC 2350Z 226DEG 23KT 4060 10252 

$$

COC095-080000-
/O.CON.KBOU.TO.W.0012.000000T0000Z-140508T0000Z/
PHILLIPS CO-
551 PM MDT WED MAY 7 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR WESTERN
PHILLIPS COUNTY...
    
AT 550 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR PAOLI...OR 11 MILES WEST OF HOLYOKE...MOVING
NORTHEAST AT 25 MPH.

HAZARD...TORNADO AND PING PONG BALL SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
HAXTUN...PAOLI...HIGHLAND CENTER AND FAIRFIELD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4044 10266 4071 10265 4074 10250 4045 10244
TIME...MOT...LOC 2350Z 226DEG 23KT 4060 10252 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

RPK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 8:46 PM MDT	Special Weather Statement	BOU	Weld	29 min
May 6, 11:23 PM MDT	Special Weather Statement	BOU	Weld	52 min
May 6, 11:49 PM MDT	Severe Thunderstorm Warning	BOU	Weld	41 min
May 7, 1:31 PM MDT	Special Weather Statement	BOU	Larimer	44 min
May 7, 1:45 PM MDT	Severe Thunderstorm Warning	BOU	Larimer, Weld	45 min
May 7, 1:51 PM MDT	Tornado Warning	BOU	Weld	24 min
May 7, 1:51 PM MDT	Tornado Warning	BOU	Weld	24 min
May 7, 2:26 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Washington	49 min
May 7, 2:32 PM MDT	Severe Thunderstorm Warning	BOU	Weld	43 min
May 7, 2:33 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	27 min
May 7, 2:39 PM MDT	Tornado Warning	BOU	Weld	36 min
May 7, 2:56 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	34 min
May 7, 3:00 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	45 min
May 7, 3:01 PM MDT	Severe Thunderstorm Warning	BOU	Weld	44 min
May 7, 3:04 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Washington	41 min
May 7, 3:27 PM MDT	Tornado Warning	BOU	Weld	33 min
May 7, 3:30 PM MDT	Tornado Warning	BOU	Washington	45 min
May 7, 3:57 PM MDT	Severe Thunderstorm Warning	BOU	Washington	48 min
May 7, 4:00 PM MDT	Severe Thunderstorm Warning	BOU	Weld	30 min
May 7, 4:15 PM MDT	Tornado Warning	BOU	Washington	45 min
May 7, 4:26 PM MDT	Tornado Warning	BOU	Weld	34 min
May 7, 4:50 PM MDT	Tornado Warning	BOU	Logan, Phillips, Washington	40 min
May 7, 4:52 PM MDT	Tornado Warning	BOU	Phillips	23 min
May 7, 4:57 PM MDT	Tornado Warning	BOU	Logan, Sedgwick	48 min
May 7, 5:10 PM MDT	Tornado Warning	BOU	Phillips	35 min
May 7, 5:17 PM MDT	Special Weather Statement	BOU	Broomfield	43 min
May 7, 5:24 PM MDT	Special Weather Statement	BOU	Broomfield	36 min
May 7, 5:30 PM MDT	Severe Thunderstorm Warning	BOU	Boulder	45 min
May 7, 5:38 PM MDT	Tornado Warning	BOU	Phillips, Sedgwick	37 min

Nearby

Tornado Warnings in Colorado, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.