Alert archive / Colorado / Tornado Warnings in 2014

Tornado Warning 1, NWS Denver/Boulder, CO

May 7, 2014Weld County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 7, 2014, 1:51 PM MDT for Weld County, Colorado. It was in force for 24 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, 1:51 PM MDT (19:51 UTC)
Expired
May 7, 2014, 2:15 PM MDT
In force
24 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Weld County, CO

The radar

The Cheyenne radar (KCYS), 30 km from the middle of the area, began a volume at 19:54 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 7, 12:37 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 7.9 hours before the alert went out and 178 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 2014-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 97 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2014-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.19395878Sfc1 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
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.

566 
WFUS55 KBOU 071951
TORBOU
COC123-072015-
/O.NEW.KBOU.TO.W.0001.140507T1951Z-140507T2015Z/

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

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN WELD COUNTY IN NORTHEAST COLORADO...

* UNTIL 215 PM MDT
    
* AT 150 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR CARR...OR 19 MILES SOUTH OF CHEYENNE...
  MOVING NORTHEAST AT 15 MPH.

  HAZARD...TORNADO. 

  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...
  NATURAL FORT...CARR AND ROCKPORT. 

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 4082 10477 4078 10494 4095 10495 4096 10494
      4099 10478
TIME...MOT...LOC 1950Z 245DEG 12KT 4088 10490 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

BAKER
1 follow-up statement
946 
WWUS55 KBOU 072023
SVSBOU

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

COC123-072031-
/O.EXP.KBOU.TO.W.0001.000000T0000Z-140507T2015Z/
WELD CO-
223 PM MDT WED MAY 7 2014

...THE TORNADO WARNING FOR NORTHWESTERN WELD COUNTY HAS EXPIRED...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...LARGE HAIL AND DAMAGING WINDS REMAIN LIKELY
AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.

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

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR 
NORTHWESTERN WELD COUNTY IN NORTHEAST COLORADO UNTIL UNTIL 230 PM 
MDT.



LAT...LON 4082 10477 4078 10494 4095 10495 4096 10494
      4099 10478
TIME...MOT...LOC 2021Z 245DEG 12KT 4088 10490 

$$

RPK

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 8:46 PM MDTSpecial Weather StatementBOUWeld29 min
May 6, 11:23 PM MDTSpecial Weather StatementBOUWeld52 min
May 6, 11:49 PM MDTSevere Thunderstorm WarningBOUWeld41 min
May 7, 1:31 PM MDTSpecial Weather StatementBOULarimer44 min
May 7, 1:45 PM MDTSevere Thunderstorm WarningBOULarimer, Weld45 min
May 7, 1:51 PM MDTTornado WarningBOUWeld24 min
May 7, 2:26 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe, Washington49 min
May 7, 2:32 PM MDTSevere Thunderstorm WarningBOUWeld43 min
May 7, 2:33 PM MDTSevere Thunderstorm WarningBOULarimer27 min
May 7, 2:39 PM MDTTornado WarningBOUWeld36 min
May 7, 2:56 PM MDTSevere Thunderstorm WarningBOULarimer34 min
May 7, 3:00 PM MDTSevere Thunderstorm WarningBOULarimer45 min
May 7, 3:01 PM MDTSevere Thunderstorm WarningBOUWeld44 min
May 7, 3:04 PM MDTSevere Thunderstorm WarningBOUAdams, Morgan, Washington41 min
May 7, 3:27 PM MDTTornado WarningBOUWeld33 min
May 7, 3:30 PM MDTTornado WarningBOUWashington45 min
May 7, 3:57 PM MDTSevere Thunderstorm WarningBOUWashington48 min
May 7, 4:00 PM MDTSevere Thunderstorm WarningBOUWeld30 min
May 7, 4:15 PM MDTTornado WarningBOUWashington45 min
May 7, 4:26 PM MDTTornado WarningBOUWeld34 min
May 7, 4:50 PM MDTTornado WarningBOULogan, Phillips, Washington40 min
May 7, 4:52 PM MDTTornado WarningBOUPhillips23 min
May 7, 4:57 PM MDTTornado WarningBOULogan, Sedgwick48 min
May 7, 5:10 PM MDTTornado WarningBOUPhillips35 min
May 7, 5:17 PM MDTSpecial Weather StatementBOUBroomfield43 min
May 7, 5:24 PM MDTSpecial Weather StatementBOUBroomfield36 min
May 7, 5:30 PM MDTSevere Thunderstorm WarningBOUBoulder45 min
May 7, 5:30 PM MDTTornado Warning Tornado observedBOULogan, Phillips30 min
May 7, 5:38 PM MDTTornado WarningBOUPhillips, Sedgwick37 min

Nearby

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