Alert archive / Wyoming / High Wind Warnings in 2017

High Wind Warning 10, NWS Riverton, WY

March 4, 2017Fremont County, Natrona County, Sweetwater County, Wyoming

NWS Riverton, WY issued this high wind warning at Mar 4, 2017, 5:56 AM MST for Fremont County, Natrona County, Sweetwater County, Wyoming. It was in force for 56 hr. 3 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
Mar 4, 2017, 5:56 AM MST (12:56 UTC)
Expired
Mar 6, 2017, 2:00 PM MST
In force
56 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 13:01 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
Mar 5, 7:03 PM MSTNON-TSTM WND GST 701 S Lander, WYLANDER AIRPORT .
Mar 5, 7:43 PM MSTNON-TSTM WND GST 608 E Rock Springs, WYROCK SPRINGS AIRPORT .
Mar 5, 10:30 PM MSTNON-TSTM WND GST 646 Wsw Bar Nunn, WYCASPER AIRPORT.

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 12:00Z, 0.9 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 12:00Z on 2017-03-04Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2017-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3165 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

190 
WWUS75 KRIW 041256
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
556 AM MST Sat Mar 4 2017

...Occasional strong winds through Sunday evening...

.Occasional strong southwest winds will occur before a cold
frontal passage Sunday night. The strongest winds are expected
this morning and again Sunday afternoon and evening. 

WYZ019-020-042300-
/O.UPG.KRIW.HW.A.0009.170305T1500Z-170306T0500Z/
/O.NEW.KRIW.HW.W.0010.170304T1256Z-170306T0500Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
556 AM MST Sat Mar 4 2017

...HIGH WIND WARNING IN EFFECT UNTIL 10 PM MST SUNDAY...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect until 10 PM MST Sunday. The High Wind
Watch is no longer in effect. 

* TIMING...Occasional strong southwest winds with the strongest
  winds expected this morning and again Sunday afternoon and
  evening.  

* WINDS...Southwest 25 to 40 mph with gusts over 60 mph. Wind
  gusts of 60 mph have been observed on Wyoming Boulevard on the
  south side of Casper early Saturday morning.  

* IMPACTS...Strong cross winds on area roads and highways
  including Wyoming Boulevard on the south side of Casper, and
  highways 220 and 287; considerable blowover risk to high profile
  lightweight vehicles. Snow showers could combine with the winds
  to produce a period of blowing snow with limited visibility
  Sunday evening.

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.

&&

$$
11 follow-up statements
208 
WWUS75 KRIW 042127
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
227 PM MST Sat Mar 4 2017

...After decreasing late Saturday, winds will increase again 
Sunday...

.Occasional strong southwest wind is expected to increase again
around sunrise Sunday and continue into Sunday evening ahead of an
approaching cold front. The strongest wind will be in extreme
southeast Fremont County, southwest Natrona County, and along the
face and foothills of Casper Mountain. 

WYZ019-020-051400-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T0500Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
227 PM MST Sat Mar 4 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM MST SUNDAY...

* TIMING...After decreasing late Saturday, strong southwest wind
  will increase around sunrise Sunday. The strongest wind will
  blow late Sunday morning through early Sunday evening.

* WINDS...Southwest 25 to 40 mph with gusts around 60 mph, mainly
  in extreme southeast Fremont County, southwest Natrona County,
  and along and near the foothills of Casper Mountain. This area
  includes Wyoming Boulevard on the south side of Casper.

* IMPACTS...Strong cross winds on area roads and highways
  including Wyoming Boulevard on the south side of Casper, and US
  highways 220 and 287. There will be a a considerable blowover
  risk to high-profile, lightweight vehicles.

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.

&&

$$
087 
WWUS75 KRIW 050800
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
100 AM MST Sun Mar 5 2017

...Winds will increase again this morning...continuing into this
evening before decreasing some...

.Occasional strong southwest wind is expected to increase around
sunrise and continue into this evening ahead of an approaching 
cold front. The strongest wind will be in extreme southeast 
Fremont County, southwest Natrona County, and along the face and 
foothills of Casper Mountain.

WYZ019-020-052300-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T0500Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
100 AM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM MST THIS
EVENING...

* TIMING...Strong southwest wind will increase around sunrise. The
  strongest wind will blow later this morning through early
  evening.

* WINDS...Southwest 25 to 40 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$
648 
WWUS75 KRIW 051955
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1255 PM MST Sun Mar 5 2017

...Very strong winds will continue through this evening from
Jeffrey City to the Casper area...
...Very strong winds are then expected to develop across the lower
elevations of Johnson County later this evening through 2 pm
Monday...

.Very strong to high winds will continue in extreme southeast 
Fremont County, southwest Natrona County, and along the face and 
foothills of Casper Mountain. A strong cold will move towards
Johnson County later tonight with high winds expected ahead of and
behind cold frontal passage.

WYZ010-011-060500-
/O.NEW.KRIW.HW.W.0011.170306T0600Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
1255 PM MST Sun Mar 5 2017

...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 2 PM
MST MONDAY...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect from 11 PM this evening to 2 PM MST
Monday. 

* TIMING...Strong west wind will increase further later this
  evening ahead of a strong cold front which will arrive later
  tonight into Monday morning. Very strong west winds will shift
  to the north by morning and continue much of Monday.

* WINDS...West 30 to 40 mph with gusts around 60 mph...shifting to
  the north early Monday morning.

* IMPACTS...Strong cross winds on area roads and highways
  including Interstate 25 and 90. There will be a a considerable
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$

WYZ019-020-060500-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T0500Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
1255 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM MST THIS
EVENING...

* TIMING...Strong southwest wind will continue through this
  evening ahead of a strong cold front.

* WINDS...Southwest 25 to 40 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$
448 
WWUS75 KRIW 052122
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
222 PM MST Sun Mar 5 2017

...Very strong winds will continue through this evening from
Jeffrey City to the Casper area... ...Very strong winds are then
expected to develop across the lower elevations of Johnson County
later this evening through 2 pm Monday...

.Very strong to high winds will continue in extreme southeast
Fremont County, southwest Natrona County, and along the face and
foothills of Casper Mountain. A strong cold will move towards
Johnson County later tonight with high winds expected ahead of
and behind cold frontal passage.

WYZ019-020-060500-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T0500Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
222 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM MST THIS
EVENING...

* TIMING...Strong southwest wind will continue through this 
  evening ahead of a strong cold front. 

* WINDS...Southwest 25 to 40 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$

WYZ010-011-060515-
/O.CON.KRIW.HW.W.0011.170306T0600Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
222 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
2 PM MST MONDAY...

* TIMING...Strong west wind will increase further later this
  evening ahead of a strong cold front which will arrive later
  tonight into Monday morning. Very strong west winds will shift
  to the north by morning and continue much of Monday. A period of
  snow will also accompany the cold front. 

* WINDS...West 30 to 40 mph with gusts around 60 mph...shifting 
  to the north early Monday morning. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Interstate 25 and 90. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

* Other Impacts...The cold frontal passage will also be
  accompanied by a period of snow showers with near zero
  visibility due to the 50 to 60 mph winds and potential for 1 to
  2 inches of snow from late tonight through early Monday
  afternoon. 

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.

&&

$$
792 
WWUS75 KRIW 052218
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
318 PM MST Sun Mar 5 2017

...Very strong to high winds across parts of Central Wyoming
tonight into Monday...

.Very strong to high winds will continue in extreme southeast
Fremont County, southwest Natrona County, and along the face and
foothills of Casper Mountain. A strong cold will move across the
area tonight with high winds expected around the Lander Foothills
this evening and across the lower elevations of Johnson County
later this evening into early Monday afternoon.

WYZ018-060630-
/O.EXB.KRIW.HW.W.0010.000000T0000Z-170306T0700Z/
Lander Foothills-
Including the city of Lander
318 PM MST Sun Mar 5 2017

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

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect until midnight MST tonight. 

* TIMING...Strong south to southwest wind ahead of a late evening
  cold front will produce the threat of high winds through
  midnight. Winds will remain strong at times though through Monday.

* WINDS...Southwest 30 to 40 mph with gusts 60 to 65 mph

* IMPACTS...Strong cross winds between Lander and Fort Washakie.
  There will be a a considerable blowover risk to high-profile,
  lightweight vehicles. 

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.

&&

$$

WYZ019-020-060500-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T0500Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
318 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 PM MST THIS
EVENING...

* TIMING...Strong southwest wind will continue through this 
  evening ahead of a strong cold front. 

* WINDS...Southwest 25 to 40 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$

WYZ010-011-060630-
/O.CON.KRIW.HW.W.0011.170306T0600Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
318 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
2 PM MST MONDAY...

* TIMING...Strong west wind will increase further later this 
  evening ahead of a strong cold front which will arrive later 
  tonight into Monday morning. Very strong west winds will shift 
  to the north by morning and continue much of Monday. A period 
  of snow will also accompany the cold front. 

* WINDS...West 30 to 40 mph with gusts around 60 mph...shifting 
  to the north early Monday morning. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Interstate 25 and 90. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

* Other Impacts...The cold frontal passage will also be 
  accompanied by a period of snow showers with near zero 
  visibility due to the 50 to 60 mph winds and potential for 1 
  to 2 inches of snow from late tonight through early Monday 
  afternoon. 

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.

&&

$$

Team Riverton
202 
WWUS75 KRIW 060255
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
755 PM MST Sun Mar 5 2017

...Very strong to high winds across parts of Central Wyoming
tonight into Monday...

.Very strong to high winds will continue in extreme southeast
Fremont County, southwest Natrona County, and along the face and
foothills of Casper Mountain. A strong cold will move across the
area tonight with high winds expected around the Lander Foothills
this evening and across the lower elevations of Johnson County
later this evening into early Monday afternoon.

WYZ019-020-060700-
/O.EXT.KRIW.HW.W.0010.000000T0000Z-170306T2100Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
755 PM MST Sun Mar 5 2017

...HIGH WIND WARNING NOW IN EFFECT UNTIL 2 PM MST MONDAY...

* TIMING...Locally strong southwest wind gusts will continue
  tonight ahead of a strong cold front...then increase some
  through Monday morning and into the afternoon. 

* WINDS...Southwest 25 to 35 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$

WYZ010-011-060700-
/O.CON.KRIW.HW.W.0011.170306T0600Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
755 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
2 PM MST MONDAY...

* TIMING...Strong west wind will increase further later this 
  evening ahead of a strong cold front which will arrive later 
  tonight into Monday morning. Very strong west winds will shift 
  to the north by morning and continue much of Monday. A period 
  of snow will also accompany the cold front. 

* WINDS...West 30 to 40 mph with gusts around 60 mph...shifting 
  to the north early Monday morning. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Interstate 25 and 90. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

* Other Impacts...The cold frontal passage will also be 
  accompanied by a period of snow showers with near zero 
  visibility due to the 50 to 60 mph winds and potential for 1 
  to 2 inches of snow from late tonight through early Monday 
  afternoon. 

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.

&&

$$

WYZ018-060700-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T0700Z/
Lander Foothills-
Including the city of Lander
755 PM MST Sun Mar 5 2017

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

* TIMING...Strong south to southwest wind ahead of a late evening
  cold front will produce the threat of high wind gusts through 
  midnight. Winds will remain strong at times though through 
  Monday. 

* WINDS...Southwest 20 to 30 mph with gusts 55 to 65 mph

* IMPACTS...Strong cross winds between Lander and Fort Washakie. 
  There will be a a considerable blowover risk to high-profile, 
  lightweight vehicles. 

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.

&&

$$
774 
WWUS75 KRIW 060654
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1154 PM MST Sun Mar 5 2017

...Very strong to high winds across parts of Central Wyoming
tonight into Monday...

.Very strong to high winds will continue in extreme southeast
Fremont County, southwest Natrona County, and along the face and
foothills of Casper Mountain. A strong cold will move across the
area tonight with high winds expected around the Lander Foothills
this evening and across the lower elevations of Johnson County
later this evening into early Monday afternoon.

WYZ018-060800-
/O.EXP.KRIW.HW.W.0010.000000T0000Z-170306T0700Z/
Lander Foothills-
Including the city of Lander
1154 PM MST Sun Mar 5 2017

...HIGH WIND WARNING WILL EXPIRE AT MIDNIGHT MST TONIGHT...

Winds have decreased this evening and are quite light at the
moment. Winds will increase later today and become gusty, however
should remain well below warning criteria.

$$

WYZ019-020-061000-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T2100Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
1154 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST MONDAY...

* TIMING...Locally strong southwest wind gusts will continue 
  tonight ahead of a strong cold front...then increase some 
  through Monday morning and into the afternoon. 

* WINDS...Southwest 25 to 35 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$

WYZ010-011-061000-
/O.CON.KRIW.HW.W.0011.000000T0000Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
1154 PM MST Sun Mar 5 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST MONDAY...

* TIMING...Strong west wind will increase further later this 
  evening ahead of a strong cold front which will arrive later 
  tonight into Monday morning. Very strong west winds will shift 
  to the north by morning and continue much of Monday. A period 
  of snow will also accompany the cold front. 

* WINDS...West 30 to 40 mph with gusts around 60 mph...shifting 
  to the north early Monday morning. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Interstate 25 and 90. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

* Other Impacts...The cold frontal passage will also be 
  accompanied by a period of snow showers with near zero 
  visibility due to the 50 to 60 mph winds and potential for 1 
  to 2 inches of snow from late tonight through early Monday 
  afternoon. 

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.

&&

$$
470 
WWUS75 KRIW 060826
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
126 AM MST Mon Mar 6 2017

...Strong to high winds across parts of Central Wyoming today...

.Very strong to high winds will continue in extreme southeast
Fremont County, southwest Natrona County, and along the face and
foothills of Casper Mountain. A strong cold will move across the
area this morning with high winds expected across the lower 
elevations of Johnson County into this afternoon. Snow may also
accompany this wind at times.

WYZ019-020-062100-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T2100Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
126 AM MST Mon Mar 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* TIMING...Locally strong southwest wind gusts will increase once
  again this morning...lasting into this afternoon.

* WINDS...Southwest 25 to 35 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

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.

&&

$$

WYZ010-011-062100-
/O.CON.KRIW.HW.W.0011.000000T0000Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
126 AM MST Mon Mar 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* TIMING...Strong west winds will shift to the north or northwest
  this morning behind a cold front and continue into the
  afternoon. A period of snow will also accompany the cold
  front...reducing visibilities at times to less than a mile. 

* WINDS...West 30 to 40 mph with gusts around 60 mph...shifting 
  to the north early Monday morning. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Interstate 25 and 90. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles. 

* Other Impacts...The cold frontal passage will also be
  accompanied by a period of snow showers with very poor
  visibility due to the 50 to 60 mph winds and the potential for 1
  to 2 inches of snow through early afternoon.


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.

&&

$$
686 
WWUS75 KRIW 061250
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
550 AM MST Mon Mar 6 2017

...Strong to high winds across parts of Central Wyoming today...

.Very strong to high winds will continue in extreme southeast
Fremont County, southwest Natrona County, and along the face and
foothills of Casper Mountain. A strong cold will move across the
area this morning with high winds expected across the lower
elevations of Johnson County into this afternoon. Snow may also
accompany this wind at times.

WYZ019-020-062100-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T2100Z/
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-
Including the cities of Jeffrey City and Casper
550 AM MST Mon Mar 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* TIMING...Locally strong southwest wind gusts will increase 
  once again this morning...lasting into this afternoon. 

* WINDS...Southwest 25 to 35 mph with gusts 50 to 60 mph, mainly 
  in extreme southeast Fremont County, southwest Natrona County, 
  and along and near the foothills of Casper Mountain. This area 
  includes Wyoming Boulevard on the south side of Casper. 

* IMPACTS...Strong cross winds on area roads and highways 
  including Wyoming Boulevard on the south side of Casper, and 
  US highways 220 and 287. There will be a a considerable 
  blowover risk to high-profile, lightweight vehicles.

* OTHER IMPACTS...Periods of snow showers with very poor
  visibility with potential for 1 to perhaps 2 inches of snow by
  early afternoon.

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.

&&

$$

WYZ010-011-062100-
/O.CON.KRIW.HW.W.0011.000000T0000Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
550 AM MST Mon Mar 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* TIMING...Strong northwest to north wind, as well as snow and
  blowing snow will continue through early afternoon. Visibility
  in snow could be under a mile at times.

* WINDS...Northwest to north 30 to 40 mph with gusts around 60
  mph.

* IMPACTS...Considerable blowover risk to high-profile,
  lightweight vehicles on west to east orientated roadways,
  including Interstate 90.

* Other Impacts...Periods of snow with with very poor visibility
  at times due to the 50 to 60 mph winds, with the potential for 1
  to 2 inches of snow through early afternoon. Roads will also be
  slick in most areas.

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.

&&

$$

Team Riverton/21
805 
WWUS75 KRIW 061708
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1008 AM MST Mon Mar 6 2017

...Strong to high winds across parts of Central Wyoming today...

.Very strong to high winds will continue in extreme southeast
Fremont County and southwest Natrona County through early this
afternoon. A strong cold will move across the area this morning 
with high winds expected across the lower elevations of Johnson 
County into this afternoon. Snow will also accompany this wind
creating blizzard conditions at times.

WYZ020-061815-
/O.CAN.KRIW.HW.W.0010.000000T0000Z-170306T2100Z/
Natrona County Lower Elevations-
Including the city of Casper
1008 AM MST Mon Mar 6 2017

...HIGH WIND WARNING IS CANCELLED...

The National Weather Service in Riverton has cancelled the High
Wind Warning. 

The high wind warning has been replaced by a winter weather
advisory. Snow will continue through mid afternoon with a total of
3 to 5 inches expected for many areas.

$$

WYZ019-062100-
/O.CON.KRIW.HW.W.0010.000000T0000Z-170306T2100Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
1008 AM MST Mon Mar 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* TIMING...Very strong west wind will continue once again this
  morning...lasting into this afternoon. An automated wind sensor
  near Muddy Gap reported a peak wind gust of 77 mph between 850
  and 950 am this morning. Most areas were blowing 40 to 50 mph.

* WINDS...Southwest 25 to 35 mph with gusts over 60 mph, mainly in
  extreme southeast Fremont County and southwest Natrona County.

* IMPACTS...Strong cross winds on area roads and highways
  including US highways 220 and 287. There will be a a 
considerable blowover risk to high- profile, lightweight 
vehicles. 

* OTHER IMPACTS...Periods of snow showers with very poor 
  visibility with potential for 1 to perhaps 2 inches of snow by 
  early afternoon. 

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.

&&

$$

WYZ010-011-062100-
/O.CON.KRIW.HW.W.0011.000000T0000Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
1008 AM MST Mon Mar 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* TIMING...Strong northwest to north wind, as well as snow and 
  blowing snow will continue through early afternoon. Visibility 
  in snow could be under a mile at times. 

* WINDS...Northwest to north 30 to 40 mph with gusts around 60 
  mph. 

* IMPACTS...Considerable blowover risk to high-profile, 
  lightweight vehicles on west to east orientated roadways, 
  including Interstate 90. 

* Other Impacts...Periods of snow with with very poor visibility 
  at times due to the 50 to 60 mph winds, with the potential for 
  1 to 2 inches of snow through early afternoon. Roads will also 
  be slick in most areas. 

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.

&&

$$
336 
WWUS75 KRIW 062056
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
156 PM MST Mon Mar 6 2017

WYZ019-062200-
/O.EXP.KRIW.HW.W.0010.000000T0000Z-170306T2100Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
156 PM MST Mon Mar 6 2017

...HIGH WIND WARNING WILL EXPIRE AT 2 PM MST THIS AFTERNOON...

The threat of high winds has diminished but very strong winds will
continue the next several days. See our latest special weather
statement for more details on the continued wind threat through at
least mid week.

$$

WYZ010-011-062200-
/O.EXP.KRIW.HW.W.0011.000000T0000Z-170306T2100Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
156 PM MST Mon Mar 6 2017

...HIGH WIND WARNING WILL EXPIRE AT 2 PM MST THIS AFTERNOON...

Snow and wind is gradually diminishing across the area. The high
wind warning for the area will be allowed to expire on time at 2
pm. Snowfall amounts have varied widely from less than an inch to
reports over 4 inches further south from Kaycee into the southeast
part of the county.

$$

Skrbac

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 Mar 4, 2:14 AM MST, 3 hours 42 minutes earlier.

Area forecast discussion, Mar 4, 2:14 AM MST, 3 hours 42 minutes before
Area Forecast Discussion
National Weather Service Riverton WY
214 AM MST Sat Mar 4 2017

.SHORT TERM...Saturday through Monday night

All is mainly quiet at this late hour on Friday night. The one
exception is across the southwestern wind corridor where we have had
some 50 mph gusts. We threw around the idea of a high wind warning
for today, but decided on a Special Weather Statement since the
really strong wind should hold off until Sunday afternoon. As for
today, the storm moving in from the west today continues to look
less impressive, at least through Saturday night. Just about all
areas look to have a mainly dry morning and many areas will be dry
all through the day. In addition, with warmer temperatures in the
valleys, some of the precipitation in the lower elevations may fall
as rain. Even tonight, most of the models have backed off with the
heaviest precipitation holding until Sunday. Meanwhile, another mild
and dry day will be found East of the Divide. We will continue the
trend of raising temperatures a few degrees each day with the snow
continuing to melt. With the gradual melting of the snow and the
thawing of the ground allowing for some absorption of the run off,
the flooding risk looks to be less than back in February. However,
it is NOT zero so it will still have to be watched.

Sunday looks to be the active day as the cold front moves across the
state. The heavy snow will move into the west as the front and
trough axis approach and the left front quadrant of the jet
approach. This has been the pattern all winter and will continue
with this system. It does look like a quick hitter though so snow
amounts should stay in the advisory range for a vast majority of
areas. The heavy snow in the west should end by later Sunday night
as a decent area of negative vorticity advection moves in from
the west. Meanwhile, the story east of the Divide will be wind.
With the tightening of the pressure gradient, 700 millibar winds
increasing to 60 to 65 knots, downward momentum from the right
front quadrant of the jet and good mixing from the approaching
front, high winds look likely across the southwestern wind
corridor. As a result, we will continue the high wind watch. The
strongest winds should hold off until later Sunday afternoon into
Sunday evening as the front approaches in this vicinity.
Meanwhile, strong winds will be possible in places like Dubois
and maybe even Riverton behind the front Sunday night as the flow
turns northwest. Temperatures will be mild once again and snow
melt will continue. Some showers will be possible Sunday evening
with the frontal passage, but the flow does not look favorable for
prolonged upslope flow. The exception, however, will be across
the Bighorn range and northern Johnson County. Conditions could
get nasty for a time later Sunday night into Monday morning with
snow and a strong northwest wind.

Most snow should die off by Monday afternoon with only some light
orographic snow continuing in the west. Another wave may move into
the west later Monday night but timing with that system is a bit
inconsistent at this time. So, we kept things generic. Meanwhile,
most areas east of the Divide will be blustery and cooler, but
not anything unusual for early March.

.LONG TERM...TUESDAY THROUGH SATURDAY

Synopsis...A moist westerly flow will bring light snow to the
western mountains and far west valleys Tuesday, with windy
conditions across the southern half of Wyoming.  Drier and warmer
conditions will prevail Wednesday and Thursday, light snow tapering
off across the west Tuesday night and Wednesday.  A cold front will
spread chances of mountain snow and valley rain across the north and
west on Friday.

Discussion...Synoptic pattern Tuesday morning features deep closed
low pressure system over southern Ontario, Rex Block over the Bering
Sea, central Pacific, WNW extends between these two features across
the NW U.S. and Northern Rockies.  Both GFS and ECMWF show broad
ridge developing across the western and central U.S. midweek between
upper low over the NE Pacific and eastern Canada.  Spread between
the two models increases afterwards with GFS shoving the NE Pacific
low inland Friday and Saturday while ECWMF shows less changes to
synoptic pattern over the Pacific and western U.S., maintaining
broad ridge across the western U.S. with Pacific shortwaves riding
over the top of the ridge.  Forecast based more on ECMWF, favoring
less drastic changes to upstream Rex Block.

Isentropic upglide pattern takes shape across the west Tuesday for
widespread stratiform snow event from around sunrise Tuesday through
Tuesday evening.  Windy conditions are expected along the lee slopes
of the divide and along the Intestate 80 corridor.   Significant
warmup in store for the area Wednesday and Thursday with westerly
flow remaining fairly strong, H7 temperatures rising to 0c to 4C on
Thursday, so some 60+ degree readings likely in the warmest spots.

Confidence remains low on Friday and Saturday forecast, but hinted
at ECMWF's shortwave and associated cold front moving through area
Friday with cooling trend and introduction of PoPs across the west
and north.  Impacts with this system appear minimal overall.   Mild
westerly flow is still the best bet next weekend with chances of
precipitation confined mainly to the west.

&&

.AVIATION.../12Z ISSUANCE/

VFR conditions will prevail across the forecast area through most
of the forecast period. Gusty west to southwest winds will develop
in the lee of the Continental Divide and across the wind Corridor
from South Pass to Casper this morning...persisting through much
of the rest of the forecast period. Additionally, low level wind
shear will also be present and persistent across the region. Mid
to low level clouds will begin to increase across west and northwest
Wyoming late in the forecast period ahead of an approaching storm
system...with possible MVFR in lower CIGS at KJAC and KPNA near the end
of the forecast period.

&&

.FIRE WEATHER...

A slow warming trend will continue today for most areas. A system
will move into the west and bring some rain and snow but amounts
should remain on the light side today and tonight. Meanwhile, dry
conditions are expected East of the Divide with some gusty winds
across the southwestern Wind Corridor. Mixing and smoke dispersal
will be generally fair to poor. Snow will return to the west on
Sunday. High winds are likely from the Red Desert through Natrona
County on Sunday, especially in the afternoon and evening. Mixing
and smoke dispersal will improve to fair to good for most areas.
&&

.RIW WATCHES/WARNINGS/ADVISORIES...
High Wind Watch from Sunday morning through Sunday evening for
WYZ019-020.

&&

SHORT TERM...Hattings
LONG TERM...AEM
AVIATION...Braun
FIRE WEATHER...Hattings
Hazardous weather outlook, Mar 4, 2:22 AM MST, 3 hours 34 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Riverton WY
222 AM MST Sat Mar 4 2017

WYZ001>020-022>030-051100-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
222 AM MST Sat Mar 4 2017

...High Wind Watch for the Green Mountains and Natrona County
Sunday and Sunday evening...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Strong winds likely across from the Red Desert through Casper. Light
snow in the western mountains.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Sunday and Sunday Evening...Moderate to possibly heavy snow likely
in the west. High winds possible from Rock Springs through Casper
with strong winds possible in many areas East of the Divide.

Sunday night and Monday...Moderate snow and strong wind possible
in the Bighorn Mountains and Johnson County.

Tuesday...Snow likely in the western mountains and far west
valleys.  Windy conditions across southern Wyoming.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report any snowfall amounts and wind gusts
past 50 mph. Thank you.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 4, 2:44 PM MSTWinter Weather AdvisoryRIWFremont, Lincoln, Sublette, Sweetwater, Teton38 hr

Nearby

High Wind Warnings in Wyoming, 2017Every high wind warning in 2017

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.