Alert archive / Wyoming / High Wind Warnings in 2014

High Wind Warning 7, NWS Riverton, WY

February 11, 20145 counties in Wyoming

NWS Riverton, WY issued this high wind warning at Feb 11, 2014, 8:54 PM MST for 5 counties in Wyoming. It took effect at Feb 12, 2014, 5:00 AM MST. It was in force for 36 hr. 19 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 11, 2014, 8:54 PM MST (03:54 UTC)
In effect from
Feb 12, 2014, 5:00 AM MST
Expired
Feb 13, 2014, 5:00 PM MST
In force
36 hr
Issued by
NWS Riverton, WY

Counties Fremont County, WY, Johnson County, WY, Natrona County, WY, Park County, WY, Sweetwater County, WY

The radar

The Riverton/Lander radar (KRIW), 37 km from the middle of the area, began a volume at 03:55 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.

What was reported inside it

TimeReportWhereRemark
Feb 12, 11:04 AM MSTNON-TSTM WND GST 854 W Clark, WYALSO A GUST TO 85 MPH AT 904 AM.
Feb 12, 11:10 AM MSTNON-TSTM WND GST 7615 Sse Hiland, WYFALES ROCK RAWS SENSOR.
Feb 12, 11:30 AM MSTHIGH SUST WINDS 45Hiland, WY40 TO 45 MPH+ SUSTAINED ALL MORNING.
Feb 12, 11:50 AM MSTNON-TSTM WND GST 7718 Se Jeffrey City, WYCAMP CREEK RAWS SENSOR.
Feb 12, 11:51 AM MSTNON-TSTM WND GST 692 Sw Casper, WYAUTOMATED SENSOR ON THE SOUTHWEST SIDE OF CASPER...OUTER DRIVE.
Feb 12, 5:37 PM MSTHEAVY SNOW 723 Nw Dubois, WYBROOKS LAKE LODGE
Feb 12, 5:46 PM MSTSNOW 416 Ne Dubois, WYCASTLE CREEK SNOTEL
Feb 12, 5:46 PM MSTSNOW 430 Sw Meeteetse, WYKIRWIN SNOTEL
Feb 12, 5:46 PM MSTHEAVY SNOW 914 Ne Pahaska, WYEVENING STAR SNOTEL
Feb 12, 5:46 PM MSTHEAVY SNOW 919 Wsw Wapiti, WYBLACKWATER SNOTEL
Feb 12, 5:46 PM MSTHEAVY SNOW 921 W Clark, WYBEARTOOTH LAKE SNOTEL
Feb 12, 5:47 PM MSTSNOW 118 Sw Cody, WYMARQUETTE SNOTEL
Feb 12, 5:47 PM MSTHEAVY SNOW 826 Wsw Clark, WYWOLVERINE SNOTEL
Feb 12, 5:50 PM MSTSNOW 114 W Crowheart, WYCOLD SPRINGS SNOTEL
Feb 12, 5:51 PM MSTSNOW 118 W Lander, WYHOBBS PARK SNOTEL
Feb 12, 5:51 PM MSTSNOW 16 Wsw Dubois, WYLITTLE WARM SNOTEL
Feb 12, 5:51 PM MSTSNOW 17 Nw Atlantic City, WYSOUTH PASS SNOTEL
Feb 12, 5:51 PM MSTSNOW 212 Sw Lander, WYTOWNSEND CREEK SNOTEL
Feb 12, 5:51 PM MSTSNOW 426 Nw Lander, WYST. LAWRENCE ALT SNOTEL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Riverton, WY (KRIW), launched 00:00Z, 3.9 hours before the alert went out and 31 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 2014-02-12Temperature 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 2014-02-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.1939587897117136Sfc1 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
2226 m above ground
0-6 km bulk shear
83 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
163 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.

596 
WWUS75 KRIW 120354
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
854 PM MST TUE FEB 11 2014

...HIGH WINDS PROBABLE ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING
WEDNESDAY AND WEDNESDAY NIGHT...

.THE COMBINATION OF AN INCREASING SURFACE PRESSURE GRADIENT AND
VERY STRONG WINDS ABOVE THE SURFACE MAY COMBINE TO PRODUCE HIGH
WINDS ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING WEDNESDAY
AND WEDNESDAY NIGHT.

WYZ003-121200-
/O.UPG.KRIW.HW.A.0005.140212T0900Z-140213T1200Z/
/O.NEW.KRIW.HW.W.0007.140212T1200Z-140213T1200Z/
CODY FOOTHILLS-
INCLUDING THE CITIES OF...CODY...MEETEETSE
854 PM MST TUE FEB 11 2014

...HIGH WIND WARNING IN EFFECT FROM 5 AM WEDNESDAY TO 5 AM MST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 5 AM WEDNESDAY TO 5 AM MST
THURSDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  BEGIN TO DEVELOP EARLY WEDNESDAY MORNING WITH THE HIGHEST
  PROBABILITY OCCURRING BY MIDDAY. THE THREAT OF HIGH WINDS EXTENDS
  THROUGH WEDNESDAY NIGHT.

* WIND...WEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...TRAVELERS ALONG HIGHWAY 120 FROM JUST SOUTH OF CODY 
  TO CLARK MAY BE IMPACTED BY VERY STRONG CROSSWINDS FROM THE 
  EARLY HOURS WEDNESDAY THROUGH WEDNESDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WATCH MEANS CONDITIONS ARE FAVORABLE FOR A
HAZARDOUS HIGH WIND EVENT IN AND CLOSE TO THE WATCH AREA.

&&

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.

&&

$$

WYZ019-020-121200-
/O.UPG.KRIW.HW.A.0005.140212T1500Z-140213T0300Z/
/O.NEW.KRIW.HW.W.0007.140212T1500Z-140213T0300Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
854 PM MST TUE FEB 11 2014

...HIGH WIND WARNING IN EFFECT FROM 8 AM TO 8 PM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 8 AM TO 8 PM MST WEDNESDAY. THE
HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  BEGIN TO DEVELOP WEDNESDAY MORNING AND EXTEND INTO WEDNESDAY
  EVENING.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON HIGHWAY 220 BETWEEN MUDDY GAP AND 
  CASPER AND HIGHWAYS 135...287 AND 789 OVER BEAVER RIM TO 
  JEFFREY CITY AND MUDDY GAP MAY BE IMPACTED BY VERY STRONG AND 
  ERRATIC WIND GUSTS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WATCH MEANS CONDITIONS ARE FAVORABLE FOR A
HAZARDOUS HIGH WIND EVENT IN AND CLOSE TO THE WATCH AREA.

&&

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.

&&

$$

WYZ011-121200-
/O.UPG.KRIW.HW.A.0005.140212T1500Z-140213T0300Z/
/O.NEW.KRIW.HW.W.0007.140212T1500Z-140213T0300Z/
SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITY OF...KAYCEE
854 PM MST TUE FEB 11 2014

...HIGH WIND WARNING IN EFFECT FROM 8 AM TO 8 PM MST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 8 AM TO 8 PM MST WEDNESDAY. THE
HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  BEGIN TO DEVELOP WEDNESDAY MORNING...LASTING INTO WEDNESDAY
  EVENING.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 60 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON INTERSTATE 25 MAY BE IMPACTED BY VERY 
  STRONG AND ERRATIC WIND GUSTS ACROSS SOUTHERN JOHNSON COUNTY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WATCH MEANS CONDITIONS ARE FAVORABLE FOR A
HAZARDOUS HIGH WIND EVENT IN AND CLOSE TO THE WATCH AREA.

&&

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.

&&

$$
7 follow-up statements
174 
WWUS75 KRIW 120937
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
237 AM MST WED FEB 12 2014

...HIGH WINDS PROBABLE ACROSS PORTIONS OF NORTHERN AND CENTRAL
WYOMING TODAY TONIGHT...

.THE COMBINATION OF AN INCREASING SURFACE PRESSURE GRADIENT AND
VERY STRONG WINDS ABOVE THE SURFACE WILL COMBINE TO PRODUCE HIGH
WINDS ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING TODAY
THROUGH WEDNESDAY NIGHT.

WYZ003-130000-
/O.CON.KRIW.HW.W.0007.140212T1200Z-140213T1200Z/
CODY FOOTHILLS-
INCLUDING THE CITIES OF...CODY...MEETEETSE
237 AM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  BEGIN TO DEVELOP THIS MORNING WITH THE HIGHEST PROBABILITY OF
  THE STRONGEST WINDS OCCURRING BY MIDDAY. THE THREAT OF HIGH
  WINDS EXTENDS THROUGH TONIGHT.

* WIND...WEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...TRAVELERS ALONG HIGHWAY 120 FROM JUST SOUTH OF CODY 
  TO CLARK MAY BE IMPACTED BY VERY STRONG CROSSWINDS FROM THE 
  EARLY HOURS WEDNESDAY THROUGH WEDNESDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WATCH MEANS CONDITIONS ARE FAVORABLE FOR A
HAZARDOUS HIGH WIND EVENT IN AND CLOSE TO THE WATCH AREA.

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.

&&

$$

WYZ019-020-130000-
/O.CON.KRIW.HW.W.0007.140212T1500Z-140213T0300Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
237 AM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
8 PM MST THIS EVENING...

A HIGH WIND WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
8 PM MST THIS EVENING. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  BEGIN TO DEVELOP THIS MORNING AND EXTEND INTO WEDNESDAY EVENING.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON HIGHWAY 220 BETWEEN MUDDY GAP AND 
  CASPER AND HIGHWAYS 135...287 AND 789 OVER BEAVER RIM TO 
  JEFFREY CITY AND MUDDY GAP MAY BE IMPACTED BY VERY STRONG AND 
  ERRATIC WIND GUSTS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WATCH MEANS CONDITIONS ARE FAVORABLE FOR A
HAZARDOUS HIGH WIND EVENT IN AND CLOSE TO THE WATCH AREA.

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.

&&

$$

WYZ011-130000-
/O.CON.KRIW.HW.W.0007.140212T1500Z-140213T0300Z/
SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITY OF...KAYCEE
237 AM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
8 PM MST THIS EVENING...

A HIGH WIND WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
8 PM MST THIS EVENING. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL 
  BEGIN TO DEVELOP THIS MORNING...LASTING INTO WEDNESDAY 
  EVENING. 

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 60 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON INTERSTATE 25 MAY BE IMPACTED BY VERY 
  STRONG AND ERRATIC WIND GUSTS ACROSS SOUTHERN JOHNSON COUNTY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WATCH MEANS CONDITIONS ARE FAVORABLE FOR A
HAZARDOUS HIGH WIND EVENT IN AND CLOSE TO THE WATCH AREA.

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.

&&

$$
594 
WWUS75 KRIW 121243
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
543 AM MST WED FEB 12 2014

...HIGH WINDS ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING
TODAY AND TONIGHT...

.THE COMBINATION OF AN INCREASING SURFACE PRESSURE GRADIENT AND
VERY STRONG WINDS ABOVE THE SURFACE WILL COMBINE TO PRODUCE HIGH
WINDS ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING TODAY AND
TONIGHT. 

WYZ003-130000-
/O.CON.KRIW.HW.W.0007.000000T0000Z-140213T1200Z/
CODY FOOTHILLS-
INCLUDING THE CITIES OF...CODY...MEETEETSE
543 AM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL 
  BEGIN TO DEVELOP THIS MORNING WITH THE HIGHEST PROBABILITY OF 
  THE STRONGEST WINDS OCCURRING BY MIDDAY. THE THREAT OF HIGH 
  WINDS EXTENDS THROUGH TONIGHT. 

* WIND...WEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...THE STRONG WINDS MAY CAUSE LOSS OF VEHICLE CONTROL OR
  A BLOW OVER TO HIGH PROFILE VEHICLES TRAVELING EMPTY OR WITH A
  LIGHT LOAD...ESPECIALLY ALONG HIGHWAY 120 WHERE VERY STRONG
  CROSSWINDS WILL OCCUR.

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.

&&

$$

WYZ019-020-130000-
/O.CON.KRIW.HW.W.0007.140212T1500Z-140213T0300Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
543 AM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  DEVELOP THIS MORNING...AND LAST THROUGH EARLY EVENING.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON HIGHWAY 220 BETWEEN MUDDY GAP AND CASPER
  AND HIGHWAYS 135...287 AND 789 OVER BEAVER RIM TO JEFFREY CITY
  AND MUDDY GAP WILL BE IMPACTED BY VERY STRONG AND ERRATIC WIND
  GUSTS. LOSS OF VEHICLE CONTROL OR A BLOW OVER TO HIGH PROFILE
  VEHICLES TRAVELING EMPTY OR WITH A LIGHT LOAD WILL BE POSSIBLE.

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.

&&

$$

WYZ011-130000-
/O.CON.KRIW.HW.W.0007.140212T1500Z-140213T0300Z/
SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITY OF...KAYCEE
543 AM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  BEGIN TO DEVELOP THIS MORNING...AND LAST THROUGH EARLY EVENING.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 60 MPH POSSIBLE.

* IMPACTS...THE STRONG WINDS MAY CAUSE LOSS OF VEHICLE CONTROL OR
  A BLOW OVER TO HIGH PROFILE VEHICLES TRAVELING EMPTY OR WITH A
  LIGHT LOAD...INCLUDING THOSE TRAVELING ALONG INTERSTATE 25.

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.

&&

$$

TEAM RIVERTON/21
907 
WWUS75 KRIW 122037
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
137 PM MST WED FEB 12 2014

...HIGH WINDS ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING
TODAY AND TONIGHT...

.THE COMBINATION OF AN INCREASING SURFACE PRESSURE GRADIENT AND
VERY STRONG WINDS ABOVE THE SURFACE WILL COMBINE TO PRODUCE HIGH
WINDS ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING TODAY AND
TONIGHT.  HAVE EXTENDED THE HIGH WIND WARNING FOR THE GREEN 
MOUNTAINS AND NATRONA COUNTY UNTIL MIDNIGHT AS THE POTENTIAL FOR
HIGH WINDS IS EXPECTED TO LAST LONGER THAN ORIGINALLY EXPECTED.

WYZ019-020-130300-
/O.EXT.KRIW.HW.W.0007.000000T0000Z-140213T0700Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
137 PM MST WED FEB 12 2014

...HIGH WIND WARNING NOW IN EFFECT UNTIL MIDNIGHT MST TONIGHT...

THE HIGH WIND WARNING IS NOW IN EFFECT UNTIL MIDNIGHT MST
TONIGHT. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  LAST THROUGH LATE EVENING.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON HIGHWAY 220 BETWEEN MUDDY GAP AND 
  CASPER AND HIGHWAYS 135...287 AND 789 OVER BEAVER RIM TO 
  JEFFREY CITY AND MUDDY GAP WILL BE IMPACTED BY VERY STRONG AND 
  ERRATIC WIND GUSTS. LOSS OF VEHICLE CONTROL OR A BLOW OVER TO 
  HIGH PROFILE VEHICLES TRAVELING EMPTY OR WITH A LIGHT LOAD 
  WILL BE POSSIBLE. 

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.

&&

$$

WYZ003-130300-
/O.CON.KRIW.HW.W.0007.000000T0000Z-140213T1200Z/
CODY FOOTHILLS-
INCLUDING THE CITIES OF...CODY...MEETEETSE
137 PM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  CONTINUE THROUGH TONIGHT.

* WIND...WEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...THE STRONG WINDS MAY CAUSE LOSS OF VEHICLE CONTROL 
  OR A BLOW OVER TO HIGH PROFILE VEHICLES TRAVELING EMPTY OR 
  WITH A LIGHT LOAD...ESPECIALLY ALONG HIGHWAY 120 WHERE VERY 
  STRONG CROSSWINDS WILL OCCUR. 

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.

&&

$$

WYZ011-130300-
/O.CON.KRIW.HW.W.0007.000000T0000Z-140213T0300Z/
SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITY OF...KAYCEE
137 PM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  LAST THROUGH EARLY EVENING.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 60 MPH POSSIBLE.

* IMPACTS...THE STRONG WINDS MAY CAUSE LOSS OF VEHICLE CONTROL 
  OR A BLOW OVER TO HIGH PROFILE VEHICLES TRAVELING EMPTY OR 
  WITH A LIGHT LOAD...INCLUDING THOSE TRAVELING ALONG INTERSTATE 
  25. 

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.

&&

$$
074 
WWUS75 KRIW 130257
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
757 PM MST WED FEB 12 2014

...HIGH WINDS CONTINUE ACROSS PORTIONS OF NORTHERN AND CENTRAL
WYOMING TONIGHT...

.THE COMBINATION OF AN INCREASING SURFACE PRESSURE GRADIENT AND
VERY STRONG WINDS ABOVE THE SURFACE WILL COMBINE TO PRODUCE HIGH
WINDS ACROSS PORTIONS OF NORTHERN AND CENTRAL WYOMING TONIGHT.

WYZ011-130400-
/O.EXP.KRIW.HW.W.0007.000000T0000Z-140213T0300Z/
SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITY OF...KAYCEE
757 PM MST WED FEB 12 2014

...HIGH WIND WARNING WILL EXPIRE AT 8 PM MST THIS EVENING...

THE HIGH WIND WARNING WILL EXPIRE AT 8 PM MST THIS EVENING. 

THE THREAT OF HIGH WINDS HAS ENDED ACROSS THE AREA AND THEREFORE THE
HIGH WIND WARNING WILL BE ALLOWED TO EXPIRE AT 8 PM.

$$

WYZ003-131200-
/O.CON.KRIW.HW.W.0007.000000T0000Z-140213T1200Z/
CODY FOOTHILLS-
INCLUDING THE CITIES OF...CODY...MEETEETSE
757 PM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  CONTINUE TONIGHT.

* WIND...WEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...THE STRONG WINDS MAY CAUSE LOSS OF VEHICLE CONTROL 
  OR A BLOW OVER TO HIGH PROFILE VEHICLES TRAVELING EMPTY OR 
  WITH A LIGHT LOAD...ESPECIALLY ALONG HIGHWAY 120 WHERE VERY 
  STRONG CROSSWINDS WILL OCCUR. 

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.

&&

$$

WYZ019-020-130700-
/O.CON.KRIW.HW.W.0007.000000T0000Z-140213T0700Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER
757 PM MST WED FEB 12 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT.

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  LAST THROUGH MIDNIGHT.

* WIND...SOUTHWEST 35 TO 45 MPH WITH GUSTS OVER 65 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON HIGHWAY 220 BETWEEN MUDDY GAP AND 
  CASPER AND HIGHWAYS 135...287 AND 789 OVER BEAVER RIM TO 
  JEFFREY CITY AND MUDDY GAP WILL BE IMPACTED BY VERY STRONG AND 
  ERRATIC WIND GUSTS. LOSS OF VEHICLE CONTROL OR A BLOW OVER TO 
  HIGH PROFILE VEHICLES TRAVELING EMPTY OR WITH A LIGHT LOAD 
  WILL BE POSSIBLE. 

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.

&&

$$
569 
WWUS75 KRIW 130653
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1153 PM MST WED FEB 12 2014

...HIGH WINDS CONTINUE ACROSS PORTIONS OF CENTRAL WYOMING
THE REST OF TONIGHT AND THURSDAY...

.THE COMBINATION OF AN INCREASING SURFACE PRESSURE GRADIENT AND
VERY STRONG WINDS ABOVE THE SURFACE WILL COMBINE TO PRODUCE HIGH
WINDS ACROSS PORTIONS OF CENTRAL WYOMING.

WYZ020-130800-
/O.CAN.KRIW.HW.W.0007.000000T0000Z-140213T0700Z/
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITY OF...CASPER
1153 PM MST WED FEB 12 2014

...HIGH WIND WARNING IS CANCELLED...

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

WEST TO SOUTHWEST WINDS ACROSS THE AREA WILL BE GUSTY THROUGH THE
DAY...HOWEVER THE WIND SPEEDS WILL REMAIN BELOW HIGH WIND
CRITERIA AND NOT BE AS STRONG AS WEDNESDAY. EXPECT WINDS TO BLOW
20 TO 30 MPH WITH PEAK GUSTS BETWEEN 45 AND 55 MPH TODAY.


$$

WYZ003-130800-
/O.CAN.KRIW.HW.W.0007.000000T0000Z-140213T1200Z/
CODY FOOTHILLS-
INCLUDING THE CITIES OF...CODY...MEETEETSE
1153 PM MST WED FEB 12 2014

...HIGH WIND WARNING IS CANCELLED...

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

WEST TO SOUTHWEST WINDS ACROSS THE AREA WILL BE GUSTY THROUGH THE
DAY...HOWEVER THE WIND SPEEDS WILL REMAIN BELOW HIGH WIND
CRITERIA AND NOT BE AS STRONG AS WEDNESDAY. EXPECT WINDS TO BLOW
20 TO 30 MPH WITH PEAK GUSTS BETWEEN 45 AND 55 MPH TODAY.


$$

WYZ019-131500-
/O.EXT.KRIW.HW.W.0007.000000T0000Z-140214T0000Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
INCLUDING THE CITY OF...JEFFREY CITY
1153 PM MST WED FEB 12 2014

...HIGH WIND WARNING NOW IN EFFECT UNTIL 5 PM MST THURSDAY...

THE HIGH WIND WARNING HAS BEEN EXTENDED UNTIL 5 PM MST THURSDAY.

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  LAST THROUGH THURSDAY AFTERNOON.

* WIND...SOUTHWEST 30 TO 40 MPH WITH GUSTS OVER 60 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON HIGHWAY 220 BETWEEN MUDDY GAP AND ALCOVA AND
  HIGHWAYS 135...287 AND 789 OVER BEAVER RIM TO JEFFREY CITY AND
  MUDDY GAP WILL BE IMPACTED BY VERY STRONG AND ERRATIC WIND
  GUSTS. LOSS OF VEHICLE CONTROL OR A BLOW OVER TO HIGH PROFILE
  VEHICLES TRAVELING EMPTY OR WITH A LIGHT LOAD WILL BE POSSIBLE.

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.

&&

$$
738 
WWUS75 KRIW 130917
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
217 AM MST THU FEB 13 2014

...HIGH WINDS CONTINUE ACROSS PORTIONS OF CENTRAL WYOMING TODAY...

.THE COMBINATION OF AN INCREASING SURFACE PRESSURE GRADIENT AND
VERY STRONG WINDS ABOVE THE SURFACE WILL COMBINE TO PRODUCE HIGH
WINDS ACROSS PORTIONS OF CENTRAL WYOMING.

WYZ019-140000-
/O.CON.KRIW.HW.W.0007.000000T0000Z-140214T0000Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
INCLUDING THE CITY OF...JEFFREY CITY
217 AM MST THU FEB 13 2014

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

* SUMMARY AND TIMING...STRONG TO POTENTIALLY DAMAGING WINDS WILL
  LAST THROUGH THIS AFTERNOON.

* WIND...SOUTHWEST 30 TO 40 MPH WITH GUSTS OVER 60 MPH POSSIBLE.

* IMPACTS...TRAVELERS ON HIGHWAY 220 BETWEEN MUDDY GAP AND 
  ALCOVA AND HIGHWAYS 135...287 AND 789 OVER BEAVER RIM TO 
  JEFFREY CITY AND MUDDY GAP WILL BE IMPACTED BY VERY STRONG AND 
  ERRATIC WIND GUSTS. LOSS OF VEHICLE CONTROL OR A BLOW OVER TO 
  HIGH PROFILE VEHICLES TRAVELING EMPTY OR WITH A LIGHT LOAD 
  WILL BE POSSIBLE. 

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.

&&

$$
050 
WWUS75 KRIW 140012
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
512 PM MST THU FEB 13 2014


WYZ019-140115-
/O.EXP.KRIW.HW.W.0007.000000T0000Z-140214T0000Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
INCLUDING THE CITY OF...JEFFREY CITY
512 PM MST THU FEB 13 2014

...HIGH WIND WARNING HAS EXPIRED...

THE HIGH WIND WARNING IS NO LONGER IN EFFECT. WINDS HAVE DECREASED
BELOW HIGH WIND THRESHOLDS...BUT VERY WINDY CONDITIONS WITH WEST
WIND 30 TO 35 MPH WITH GUSTS OF 50 TO 55 MPH WILL CONTINUE THROUGH
8 PM BEFORE DIMINISHING. 

$$

What forecasters said that day

The local office's own words before this high wind warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Riverton, WY wrote its last area forecast discussion before this high wind warning went out at Feb 11, 2:11 PM MST, 6 hours 43 minutes earlier.

Area forecast discussion, Feb 11, 2:11 PM MST, 6 hours 43 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
211 PM MST TUE FEB 11 2014

.SHORT TERM...TONIGHT THROUGH WEDNESDAY

COMPLEX FORECAST WITH SNOW AND STRONG WINDS OVER THE WEST
SPREADING INTO THE BIGHORN MOUNTAINS...AND HIGH WINDS ALONG AND
NEAR THE EAST SLOPES OF THE MOUNTAINS AND THROUGH THE WIND CORRIDOR
FROM NORTHWEST SWEETWATER COUNTY...ACROSS SOUTHERN FREMONT COUNTY...
NATRONA COUNTY AND INTO SOUTHERN JOHNSON COUNTY. HAVE UPGRADED WINTER
STORM WATCH TO A WARNING AND ISSUED WINTER WEATHER ADVISORY FOR
EAST SLOPES OF WIND RIVER MOUNTAINS AND THE DUBOIS ZONE FROM
DUBOIS TO NEAR TOGWOTEE PASS...AND ACROSS THE LOWER ELEVATIONS OF
SUBLETTE AND SOUTHERN LINCOLN COUNTIES. SNOWFALL WILL TAPER OFF IN
THE WEST THIS EVENING BUT NOT COMPLETELY END IN THE MOUNTAINS AND THEN
EARLY IN THE MORNING THE EASTERN EDGE OF THE PACIFIC JET STREAM
AND DEEP MOISTURE PLUME WILL BEGIN TO MOVE INTO WESTERN WYOMING.
THE JET WILL SUPPORT VERY STRONG WINDS IN THE MOUNTAINS AND LIKELY
PRODUCE MOUNTAIN WAVES ALONG THE EAST SLOPES OF THE ABSAROKA...
WIND RIVER AND BIGHORN MOUNTAINS. IT APPEARS THAT THE WAVE LENGTH
BETWEEN THE ABSAROKA WAVE WILL COME INTO PHASE WITH THE WAVE IN THE
LEE OF THE SOUTHERN BIGHORN MOUNTAINS.  THIS IS A RATHER RARE OCCURRENCE
AND IS ESSENTIAL FOR STRONG WEST DOWNSLOPE WINDS ALONG AND NEAR THE
EAST SLOPES OF THE BIGHORN MOUNTAINS. AT LEAST THE HIGH RESOLUTION
MODELS HAVE THE WAVES IN PHASE...NOW WE WILL SEE IF IT ACTUALLY
HAPPENS. TEMPERATURE WARM UP WILL CONTINUE WITH SOME PESKY COLD POOLS
IN THE BIG HORN...WIND RIVER AND GREEN RIVER BASINS. BUT EVEN
THESE AREAS WILL MODIFY SOME.  SNOWFALL STILL LOOKS GOOD IN THE WESTERN
MOUNTAINS. THE STRONG WINDS WILL HAMPER MEASUREMENT WITH
SIGNIFICANT BLOWING AND DRIFTING EXPECTED.

.MID TERM...WEDNESDAY NIGHT THROUGH FRIDAY

WINTER STORM WILL BE ONGOING AT THE START OF THIS PERIOD AND
CONTINUE AT LEAST INTO THURSDAY MORNING BEFORE POSSIBLY TAPER OFF.
TEMPERATURES ARE ALSO QUITE WARM WITH THIS SYSTEM BY THE LATTER
STAGES SO THE VALLEYS MAY DEAL WITH A CHANGEOVER OR MIXTURE AT TIMES
LIMITING OVERALL SNOWFALL AMOUNTS FOR THE LAST THIRD OF THE STORM OR
SO. OTHERWISE...IDEA OF A 1 TO 2 FEET IN THE MOUNTAINS LOOKS GOOD
WITH 5 TO 10...6 TO 12 INCH RANGE FOR THE LOWER ELEVATIONS
ESPECIALLY WEDNESDAY AND WEDNESDAY NIGHT. EAST OF THE DIVIDE...WE'LL
BE LOOKING AT POTENTIAL HIGH WINDS INTO THE EVENING ACROSS THE WIND
CORRIDOR UP INTO SRN JOHNSON. POTENTIAL MOUNTAIN WAVE IN SRN JOHNSON
WITH STRONG WINDS WORKING VERY CLOSE TO THE SURFACE. UP IN THE CODY
FOOTHILLS...THE MOUNTAIN WAVE SIGNATURE IS LONGER LASTING AND THUS
THE WATCH WILL BE EXTENDED THROUGH WEDNESDAY NIGHT. LCL WRF STILL
SHOWING UPSTREAM INVERSION JUST ABOVE MOUNTAIN TOP ALONG WITH RIGHT
FRONT QUAD OF THE JET APPROACHING. THE FROUDE NUMBER IS ALSO RIGHT
AROUND ONE INTO WEDNESDAY NIGHT...ESPECIALLY OVER THE MAIN ABSAROKA
FRONT SO WILL BE INTERESTING TO WATCH HOW THIS EVOLVES. WIND INTO
THE BARRIER IS AROUND 45KTS GIVE OR TAKE SO IF WE GET A SIGNIFICANT
MOUNTAIN WAVE EPISODE IT WILL LIKELY COME OFF THE HIGHER
MOUNTAINS...LIKE ABOVE CLARK. GAP FLOW SIGNATURE IS ALSO MODERATE
WITH H7 BARRIER DIFFERENCE OF 10 TO 13C. WINDS WILL ALSO LIKELY BE
QUITE STRONG FROM DUBOIS DOWN TO NEAR RIVERTON WEDNESDAY NIGHT WITH
THREAT FOR HIGH WINDS INCREASING THURSDAY WITH 160KT SEWD MOVING JET
ALONG WITH A COLD FRONT MOVING THROUGH. WILL HAVE TO WATCH THIS
CLOSELY FOR A POTENTIAL HIGH WIND EPISODE FROM DUBOIS DOWN TO
RIVERTON. THE EAST SLOPE OF THE WINDS AND LANDER FOOTHILLS WILL ALSO
BE CLOSE WITH ONLY THE WNW FLOW HAMPERING IT SOME. TEMPERATURES WILL
DEFINITELY BE WARMING UP WITH MIXED ATMOSPHERE AND FAIRLY MILD MID
LEVEL TEMPERATURES. NOT GOING WITH THE SOARING MAV GUIDANCE BUT
CLOSER TO THE MET/ECE WITH 40S AND SOME 50S EAST OF THE DIVIDE
THURSDAY AND FRIDAY.

ON FRIDAY...WE GET ANOTHER IMPRESSIVE LOOKING ISENTROPIC UPGLIDE
SIGNATURE WITH ACTIVE JET STREAM AND GOOD OROGRAPHIC POTENTIAL. WARM
MID LEVEL TEMPERATURES AGAIN MAKING THE VALLEYS TRICKY FOR RAIN/SNOW
LINE BUT MOUNTAINS SHOULD SEE ANOTHER SIGNIFICANT SNOW STORM
STARTING FRIDAY AND CONTINUING INTO THE MEDIUM RANGE PERIOD. MORE
WIND EAST OF THE DIVIDE WITH SOME HIGH WINDS POSSIBLE IN THE CODY
FOOTHILLS...WIND CORRIDOR AND DUBOIS TO RIVERTON AREA WITH
BORDERLINE HIGH WINDS ALONG THE EAST SLOPE OF THE WINDS AND LANDER
FOOTHILLS. ACTIVE PERIOD TO SAY THE LEAST!

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY

SOUTHWEST FLOW CONTINUES TO DRAW WARM MOIST AIR UP INTO MUCH OF THE
FORECAST AREA FRIDAY EVENING AS SWIFT WESTERLY FLOW PERSISTS ALOFT.
SNOW WILL CONTINUE TO PILE UP ACROSS THE WESTERN MOUNTAINS AS A
SHORT WAVE CONTINUES TO TRACK EAST...A POSSIBLE RAIN SNOW MIX ACROSS
THE WESTERN VALLEYS WILL EVENTUALLY TURN TO ALL SNOW FRIDAY NIGHT.
WINDY TO EVEN HIGH WINDS WILL BE POSSIBLE IN THE KRKS-KCPR WIND
CORRIDOR FRIDAY AFTERNOON/EVENING AS THE LEE TROUGH DEVELOPS WITH
700MB FLOW AROUND 50KT. WARM AND WINDY CONDITIONS EAST OF THE DIVIDE
WILL EVENTUALLY GIVE WAY TO COOLER NORTHERLY FLOW AS ANOTHER COLD
FRONT MOVES SOUTH EAST OF THE DIVIDE...SOME SNOW WILL ALSO ACCOMPANY
THE FRONT WITH SOME ACCUMULATION POSSIBLE IN FAVORED UPSLOPE AREAS.

ALTHOUGH PRECIPITATION IS LIKELY OVER THE WEST SATURDAY...THERE WILL
BE PROBABLY BE A LULL IN THE INTENSITY/COVERAGE OF THE
PRECIPITATION...BEFORE MORE WIDESPREAD AND HEAVIER PRECIPITATION
AFFECT WESTERN WYOMING SATURDAY NIGHT AND SUNDAY. AGAIN COULD SEE
SIGNIFICANT MOUNTAIN SNOWFALL WHILE THE LOWER ELEVATIONS WILL
PROBABLY SEE RAIN AND SNOW AS ANOTHER PUSH OF VERY MILD AIR ARRIVES
WITH A PASSING RIDGE ON SATURDAY. AREAS EAST OF THE DIVIDE WILL
REMAIN MAINLY DRY DUE TO DOWNSLOPING...BUT COULD SEE SOME
PRECIPITATION SPILL EAST OF THE DIVIDE LATE SUNDAY INTO SUNDAY NIGHT
AS THE SHORTWAVE AND ASSOCIATED PACIFIC COLD FRONT ZIP EASTWARD
ACROSS THE FORECAST AREA...BREAKING DOWN THE WARM RIDGE.

GLOBAL MODELS THEN SHOW MAINLY DRY CONDITIONS WITH ONLY A HINT OF
SOME LIGHT SNOWFALL OVER THE NORTHWESTERN MOUNTAINS MONDAY AND
TUESDAY. HOWEVER BREEZY TO WINDY CONDITIONS WILL CONTINUE...FURTHER
ENHANCING THE MILD AIRMASS...RISING INTO THE 90TH PERCENTILE FOR
THIS TIME OF YEAR...WELL ABOVE NORMAL...POSSIBLY TRANSLATING TO
WIDESPREAD HIGHS IN THE MID TO UPPER 50S EAST OF THE DIVIDE.

&&

.AVIATION.../00Z ISSUANCE/

EAST OF THE DIVIDE...KCOD/KCPR/KLND/KRIW/KWRL ROUTES

VFR CONDITIONS WILL PREVAIL OVER THE LOWER ELEVATIONS OF THE REGION
THROUGH 00Z THURSDAY. ALONG AND NEAR THE CONTINENTAL DIVIDE IN THE
MOUNTAINS AND OVER THE BIGHORN MOUNTAINS...AT ELEVATIONS ABOVE
9000 FEET...MVFR TO IFR CEILINGS AND VISIBILITIES REDUCED IN
SNOW...BLOWING SNOW AND FOG WITH HIGHER MOUNTAINS BECOMING
FREQUENTLY OBSCURED...WILL CONTINUE THROUGH 00Z THURSDAY. STRONG
DOWNSLOPE WINDS ALONG AND NEAR THE EAST SLOPES OF THE MOUNTAINS
WILL PRODUCE AREAS OF LOW LEVEL WIND SHEAR.

WEST OF THE DIVIDE...KBPI/KJAC/KPNA/KRKS ROUTES

MVFR TO IFR CEILINGS AND VISIBILITIES REDUCED IN SNOW...BLOWING
SNOW AND FOG WITH MOUNTAINS FREQUENTLY OBSCURED...WILL CONTINUE
THROUGH 00Z THURSDAY. KJAC AND KAFO WILL HAVE THE BEST CHANCES FOR
REDUCED CEILINGS AND VISIBILITIES...FOLLOWED BY KBPI...KPNA AND
KEMM. SNOW WILL INCREASE IN COVERAGE OVER WESTERN WY DURING THE
DAY WEDNESDAY. EXPECT WINDY CONDITIONS AT KRKS.

&&

.FIRE WEATHER...

NO FIRE WEATHER CONCERNS THIS WEEK. BASIN INVERSIONS WILL CONTINUE
TO ERODE IN THE WIND RIVER AND ABSAROKA FOOTHILLS IN ADDITION TO
THE USUAL WIND CORRIDOR FROM KRKS TO KCPR...WITH THE RETURN OF
GUSTY WEST TO SOUTHWEST WINDS BECOMING VERY STRONG BY WEDNESDAY.
OTHERWISE...LIGHT TO MODERATE SNOW IN THE WESTERN MOUNTAINS TODAY
WILL GIVE WAY TO HEAVY SNOW ON WEDNESDAY...BECOMING QUITE HEAVY AT
TIMES THROUGH THURSDAY AS A SERIES OF UPPER LEVEL DISTURBANCES MOVE
THROUGH THE REGION.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WATCH FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING
WYZ011-019-020.

WINTER WEATHER ADVISORY FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY
WYZ015-016-026-027.

WINTER STORM WARNING FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY
WYZ001-002-012>014-023>025.

HIGH WIND WATCH FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT
WYZ003.

&&

SHORT TERM...C.BAKER
MID TERM...SKRBAC
LONG TERM...ALLEN
AVIATION...C.BAKER
FIRE WEATHER...C.BAKER
Hazardous weather outlook, Feb 11, 3:00 PM MST, 5 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
300 PM MST TUE FEB 11 2014

WYZ001>020-022>030-121400-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
300 PM MST TUE FEB 11 2014

...WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES FOR PORTIONS
OF WESTERN WYOMING WEDNESDAY THROUGH THURSDAY AFTERNOON...

...HIGH WIND WATCHES OVER PORTIONS OF NORTHERN AND CENTRAL WYOMING
LATE TONIGHT AND WEDNESDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

LIGHT SNOW ACROSS THE WESTERN MOUNTAINS AND VALLEYS. VERY STRONG
WINDS COULD DEVELOP OVER THE CODY FOOTHILLS LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

WEDNESDAY AND THURSDAY...A MAJOR SNOWSTORM IS EXPECTED TO IMPACT MUCH
OF WESTERN WYOMING. PLEASE SEE THE WINTER STORM WARNING FOR MORE
DETAILS. ALSO STRONG TO POTENTIALLY DAMAGING WINDS COULD IMPACT THE
CODY FOOTHILLS...AND THE WIND CORRIDOR FROM JEFFREY CITY TO CASPER
WEDNESDAY.

FRIDAY THROUGH SUNDAY...PERIODS OF SIGNIFICANT SNOWFALL WILL
CONTINUE AT TIMES IN THE WESTERN MOUNTAINS AND POSSIBLY VALLEYS.
STRONG WEST WINDS WILL BLOW OFF AND ON THROUGH THE PERIOD...
ESPECIALLY IN THE WIND CORRIDOR FROM ROCK SPRINGS TO CASPER AND
NEAR THE EAST SLOPE OF THE ABSAROKA AND WIND RIVER MOUNTAINS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

TEAM RIVERTON

In the hours before

Special weather statement, Feb 11, 5:10 PM MST, 3 hours 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
510 PM MST TUE FEB 11 2014

WYZ010-120130-
NORTHEAST JOHNSON COUNTY-
510 PM MST TUE FEB 11 2014

...SNOW SHOWERS MOVING THROUGH NORTHERN JOHNSON COUNTY...

A BAND OF MODERATE TO HEAVY SNOW SHOWERS WILL MOVE THROUGH
NORTHERN JOHNSON COUNTY UNTIL 630 PM. VISIBILITY WILL BE REDUCED TO
LESS THAN ONE HALF MILE AT TIMES. ROADS WILL BE SLUSHY AND SLICK
DUE TO THE QUICK ACCUMULATING SNOWFALL. AROUND AN INCH OF SNOW IS
POSSIBLE FROM THE HEAVY SNOW SHOWERS. MOTORISTS SHOULD BE PREPARED
FOR RAPIDLY CHANGING WEATHER CONDITIONS.

AR

Nearby

High Wind Warnings in Wyoming, 2014Every high wind warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.