Alert archive / Wyoming / High Wind Warnings in 2012

High Wind Warning 22, NWS Riverton, WY

May 27, 2012Fremont County, Natrona County, Sweetwater County, Wyoming

NWS Riverton, WY issued this high wind warning at May 27, 2012, 2:32 AM MDT for Fremont County, Natrona County, Sweetwater County, Wyoming. It took effect at May 27, 2012, 9:00 AM MDT. It was in force for 12 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
May 27, 2012, 2:32 AM MDT (08:32 UTC)
In effect from
May 27, 2012, 9:00 AM MDT
Expired
May 27, 2012, 9:00 PM MDT
In force
12 hr
Issued by
NWS Riverton, WY

Counties Fremont County, WY, Natrona County, WY, Sweetwater County, WY

The radar

The Riverton/Lander radar (KRIW), 65 km from the middle of the area, began a volume at 08:33 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 nearest sounding before it

Riverton, WY (KRIW), launched 00:00Z, 8.5 hours before the alert went out and 62 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, Riverton, WY at 00:00Z on 2012-05-27Temperature 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, Riverton, WY at 00:00Z on 2012-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 276 square meters per square second.1939587897117Sfc1 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
568 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
276 m²/s²
0-3 km storm-relative helicity
393 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.

472 
WWUS75 KRIW 270832
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
232 AM MDT SUN MAY 27 2012

...STRONG WIND WILL IMPACT PORTIONS OF SOUTHERN WYOMING TODAY...

.SURFACE LOW PRESSURE WILL LIFT INTO THE NORTHERN HIGH PLAINS TODAY...RESULTING
IN A TIGHTENING PRESSURE GRADIENT ACROSS SOUTH AND EAST CENTRAL
WYOMING. HIGH WINDS ARE POSSIBLE AS A RESULT.

WYZ019-020-271645-
/O.UPG.KRIW.HW.A.0021.120527T1500Z-120528T0300Z/
/O.NEW.KRIW.HW.W.0022.120527T1500Z-120528T0300Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
232 AM MDT SUN MAY 27 2012

...HIGH WIND WARNING IN EFFECT FROM 9 AM THIS MORNING TO 9 PM MDT
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO 9 PM MDT
THIS EVENING. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 


* TIMING...WIND WILL INCREASE THIS MORNING AND CONTINUE INTO THE
  EVENING.

* WINDS...SOUTHWEST WINDS 30 TO 40 MPH WITH GUSTS TO AROUND 60
  MPH.

* IMPACTS...TRAVEL ALONG HIGHWAY 20 26...ALONG INTERSTATE 25 AND
  HIGHWAYS 135...220 AND 287 WILL BECOME HAZARDOUS DUE TO STRONG
  SOUTHWEST WINDS. THOSE TRAVELING IN HIGH PROFILE VEHICLES AND
  THOSE TOWING LIGHT TRAILERS SHOULD BE ESPECIALLY CAUTIOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF
58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

BERC
2 follow-up statements
427 
WWUS75 KRIW 271503
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
903 AM MDT SUN MAY 27 2012

...STRONG WIND WILL IMPACT PORTIONS OF CENTRAL WYOMING TODAY...

WYZ019-020-280300-
/O.CON.KRIW.HW.W.0022.000000T0000Z-120528T0300Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
903 AM MDT SUN MAY 27 2012

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING. 

* TIMING...STRONG WIND WILL OCCUR THROUGH THE EVENING HOURS.

* WINDS...SOUTHWEST WINDS 35 TO 45 MPH WITH GUSTS FROM 60 TO 65
  MPH. LOCALLY HIGHER WIND GUSTS ARE LIKELY TO OCCUR IN THE GREEN
  MOUNTAINS AND RATTLESNAKE RANGE.

* IMPACTS...TRAVEL ALONG HIGHWAY 20 26...INTERSTATE 25 AND
  HIGHWAYS 135...220...AND 287 WILL BE HAZARDOUS DUE TO STRONG
  SOUTHWEST WINDS. THOSE TRAVELING IN HIGH PROFILE VEHICLES AND
  THOSE TOWING LIGHT TRAILERS SHOULD BE ESPECIALLY CAUTIOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

AR
629 
WWUS75 KRIW 280310
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
910 PM MDT SUN MAY 27 2012


WYZ019-020-280415-
/O.EXP.KRIW.HW.W.0022.000000T0000Z-120528T0300Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
910 PM MDT SUN MAY 27 2012

...HIGH WIND WARNING HAS EXPIRED...

THE HIGH WIND WARNING IS NO LONGER IN EFFECT. 

WINDS HAD SUBSIDED BELOW HIGH WIND THRESHOLDS THIS EVENING. WEST
TO SOUTHWEST WIND AT 25 TO 35 MPH WITH GUSTS NEAR 50 MPH WILL
CONTINUE OVERNIGHT.


$$

AEM

The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 27, 2:16 PM MDTSpecial Weather StatementRIW44 min
May 27, 3:03 PM MDTSpecial Weather StatementRIWBig Horn42 min
May 27, 3:16 PM MDTSpecial Weather StatementRIWJohnson44 min

Nearby

High Wind Warnings in Wyoming, 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.