Alert archive / Colorado / Tornado Warnings in 2014

Tornado Warning 25, NWS Denver/Boulder, CO

May 22, 2014Larimer County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 22, 2014, 2:36 PM MDT for Larimer 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 22, 2014, 2:36 PM MDT (20:36 UTC)
Expired: May 22, 2014, 3:00 PM MDT
In force: 24 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Larimer County, CO

The radar

The Cheyenne radar (KCYS), 81 km from the middle of the area, began a volume at 20:37 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 22, 12:34 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 8.6 hours before the alert went out and 226 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: 49 J/kg
Mixed-layer CIN: -195 J/kg
Mixed-layer LCL: 772 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 75 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.

639 
WFUS55 KBOU 222036
TORBOU
COC069-222100-
/O.NEW.KBOU.TO.W.0025.140522T2036Z-140522T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
236 PM MDT THU MAY 22 2014

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN LARIMER COUNTY IN NORTH CENTRAL COLORADO...

* UNTIL 300 PM MDT

* AT 236 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR RED FEATHER LAKES...OR 33 MILES NORTHWEST
  OF FORT COLLINS...AND IS NEARLY STATIONARY.

  HAZARD...TORNADO. 

  SOURCE...WEATHER SPOTTERS REPORTED FUNNEL CLOUD. 

  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...
  RED FEATHER LAKES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING ISSUED
FOR THE SAME AREA.

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 4075 10565 4080 10567 4081 10559 4075 10556
TIME...MOT...LOC 2036Z 241DEG 0KT 4078 10563 

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

$$

COOPER

1 follow-up statement

775 
WWUS55 KBOU 222057
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
257 PM MDT THU MAY 22 2014

COC069-222106-
/O.EXP.KBOU.TO.W.0025.000000T0000Z-140522T2100Z/
LARIMER CO-
257 PM MDT THU MAY 22 2014

...THE TORNADO WARNING FOR NORTHERN LARIMER COUNTY WILL EXPIRE AT 300
PM MDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND EXITED THE 
WARNED AREA. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  
HOWEVER HAIL AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM MDT
THURSDAY EVENING FOR NORTHEAST COLORADO.

LAT...LON 4075 10565 4080 10567 4081 10559 4075 10556
TIME...MOT...LOC 2053Z 241DEG 0KT 4078 10563 

$$

COOPER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 6:15 PM MDT	Tornado Warning Tornado observed	BOU	Washington	30 min
May 22, 12:14 AM MDT	Areal Flood Advisory	BOU	Adams, Weld	91 min
May 22, 12:52 PM MDT	Special Weather Statement	BOU	Larimer	38 min
May 22, 1:50 PM MDT	Special Weather Statement	BOU	Larimer	40 min
May 22, 2:01 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	44 min
May 22, 2:03 PM MDT	Tornado Warning	BOU	Larimer	27 min
May 22, 2:42 PM MDT	Tornado Warning	BOU	Adams, Arapahoe, Denver	33 min
May 22, 2:55 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Denver	50 min
May 22, 3:56 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe	49 min
May 22, 4:06 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert	39 min
May 22, 4:30 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe	45 min
May 22, 4:43 PM MDT	Areal Flood Advisory	BOU	Denver, Jefferson	3 hr
May 22, 5:07 PM MDT	Flash Flood Warning	BOU	Adams, Arapahoe	3 hr
May 22, 5:18 PM MDT	Areal Flood Advisory	BOU	Adams, Arapahoe, Denver, Jefferson	3 hr

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.