Alert archive / Colorado / High Wind Warnings in 2012

High Wind Warning 9, NWS Denver/Boulder, CO

April 15, 20128 counties in Colorado

NWS Denver/Boulder, CO issued this high wind warning at Apr 15, 2012, 10:10 AM MDT for 8 counties in Colorado. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 15, 2012, 10:10 AM MDT (16:10 UTC)
Expired
Apr 15, 2012, 2:12 PM MDT
In force
4 hr
Issued by
NWS Denver/Boulder, CO

Counties Elbert County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 109 km from the middle of the area, began a volume at 16:07 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, 4.2 hours before the alert went out and 34 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 2012-04-15Temperature 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 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
1028 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
15 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.

875 
WWUS75 KBOU 151610
NPWBOU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
1010 AM MDT SUN APR 15 2012

...STRONG WINDS OVER THE NORTHEAST PLAINS TODAY...

.VERY STRONG NORTHERLY WINDS ARE EXPECTED ACROSS THE NORTHEAST
PLAINS OF COLORADO TODAY. NORTH TO NORTHWEST WINDS 30 TO 45 MPH
WILL OCCUR WITH SOME GUSTS TO 60 MPH. THE WIND WILL BE STRONGEST
NEAR THE NEBRASKA AND KANSAS BORDERS. DRIVERS OF LIGHTWEIGHT OR
HIGH PROFILE VEHICLES...IN PARTICULAR ALONG INTERSTATE 76...WILL
BE ESPECIALLY SUSCEPTIBLE TO STRONG AND SUDDEN CROSSWINDS.

COZ042-044-046-048>051-160000-
/O.NEW.KBOU.HW.W.0009.120415T1610Z-120416T0000Z/
NORTHEAST WELD COUNTY-MORGAN COUNTY-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-
PHILLIPS COUNTY-
INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES...
RAYMER...STONEHAM...BRUSH...FORT MORGAN...GOODRICH...WIGGINS...
AGATE...HUGO...LIMON...MATHESON...CROOK...MERINO...STERLING...
PEETZ...AKRON...COPE...LAST CHANCE...OTIS...JULESBURG...OVID...
SEDGWICK...AMHERST...HAXTUN...HOLYOKE
1010 AM MDT SUN APR 15 2012

...HIGH WIND WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 6 PM MDT THIS EVENING. 

* TIMING...STRONG WINDS WILL CONTINUE UNTIL MID AFTERNOON...THEN
  START TO DECREASE.

* WINDS...NORTH TO NORTHWEST WINDS 30 TO 45 MPH CAN BE EXPECTED
  WITH GUSTS TO AROUND 60 MPH.

* IMPACTS...DRIVERS OF LIGHTWEIGHT AND HIGH PROFILE VEHICLES...
  ESPECIALLY ALONG INTERSTATE 76...WILL HAVE TO EXERCISE EXTREME
  CAUTION AND BE PREPARED FOR STRONG AND SUDDEN CROSSWINDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY
DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY.

&&

$$
1 follow-up statement
289 
WWUS75 KBOU 152012
NPWBOU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
212 PM MDT SUN APR 15 2012


.ALTHOUGH IT WILL REMAIN WINDY ACROSS THE NORTHEAST PLAINS OF
COLORADO THIS AFTERNOON...THE WIND IS NO LONGER EXPECTED TO REACH
WARNING CRITERIA. THEREFORE THE HIGH WIND WARNING HAS BEEN
CANCELLED.

COZ042-044-046-048>051-152115-
/O.CAN.KBOU.HW.W.0009.000000T0000Z-120416T0000Z/
NORTHEAST WELD COUNTY-MORGAN COUNTY-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-
PHILLIPS COUNTY-
INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES...
RAYMER...STONEHAM...BRUSH...FORT MORGAN...GOODRICH...WIGGINS...
AGATE...HUGO...LIMON...MATHESON...CROOK...MERINO...STERLING...
PEETZ...AKRON...COPE...LAST CHANCE...OTIS...JULESBURG...OVID...
SEDGWICK...AMHERST...HAXTUN...HOLYOKE
212 PM MDT SUN APR 15 2012

...HIGH WIND WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE HIGH
WIND WARNING. 



$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 2:51 PM MDTSpecial Weather StatementBOUAdams24 min

Nearby

High Wind Warnings in Colorado, 2012Every high wind warning in 2012

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.