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Urgent - winter weather message
national weather service billings mt
402 am mst tue feb 21 2012
.a prolonged period of heavy snow and strong winds will impact the
beartooth/absaroka mountains..along with the big horn mountains
through wednesday night. Up to 2 feet of new snow can be expected
along with wind gusts to 65 mph...creating very dangerous
conditions in the high country.
Wyz098-220000-
/o.new.kbyz.ws.w.0004.120221t1900z-120223t1200z/
northeast big horn mountains-
including the locations of...burgess jct
402 am mst tue feb 21 2012
...winter storm warning in effect from noon today to 5 am mst
thursday...
The national weather service in billings has issued a winter
storm warning for heavy snow and blowing snow...which is in
effect from noon today to 5 am mst thursday.
* timing...snow will increase in coverage and intensity this
afternoon and continue through wednesday night. The period of
heaviest snow will be late tonight into wednesday evening.
* snow accumulation...14 to 20 inches of snow can be expected with
northwest facing slopes picking up to 2 feet.
* winds...west to northwest winds of 30 to 45 mph with gusts to 65
mph will cause substantial blowing and drifting snow along with
whiteout conditions.
* impacts...the combination of heavy snow and very strong winds
will produce whiteout conditions. These conditions will be very
dangerous to be exposed too. Those with travel plans or
recreation activities in the mountains...should strongly
consider the nature of this critical winter weather situation.
Precautionary/preparedness actions...
A winter storm warning means a significant amount of snow is
expected or occurring. Strong winds are also possible. This will
make travel very hazardous or impossible.
Urgent - weather message
national weather service billings mt
325 pm mst tue feb 21 2012
mtz036>038-057-058-wyz099-222230-
/o.upg.kbyz.hw.a.0003.120222t1300z-120223t0600z/
/o.exb.kbyz.hw.w.0005.120222t1300z-120223t0600z/
powder river-carter-southern big horn-northern big horn-
southern rosebud-sheridan foothills-
including the cities of...broadus...ekalaka...pryor...
Lodge grass...hardin...crow agency...lame deer...sheridan
325 pm mst tue feb 21 2012
...high wind warning in effect from 6 am to 11 pm mst wednesday...
The national weather service in billings has issued a high wind
warning...which is in effect from 6 am to 11 pm mst wednesday.
* timing...expect increasing winds wednesday morning...becoming
very strong during the day and persisting into the evening
hours.
* impacts...during the strongest winds on wednesday property
damage may occur...especially for uncompleted construction
projects. Power lines could become loose and cause fast moving
grass fires. Travel for high profile vehicles may become
impossible.
* winds...expect winds of 40 to 55 mph with gusts around 75 mph
possible during the day on wednesday.
Precautionary/preparedness actions...
Winds of these magnitudes can cause property damage without extra
precautions. Motorists in high profile vehicles should use
caution until the winds subside.
Urgent - winter weather message
national weather service riverton wy
227 pm mst tue feb 21 2012
...moist strong west pacific flow will bring snow and strong
winds to the western and northern mountains through wednesday
night...
.moist strong west pacific flow will continue to bring snow and
strong winds to the western and northern mountains tonight through
wednesday night. Periods of moderate to heavy snow will continue.
Winds will increase becoming quite strong on the passes and upper
mountain ridges as the storm intensifies through tonight and
wednesday. The snow should taper off through wednesday night but
very strong winds are expected to keep significant blowing and
drifting snow going through the night.
Snowfall up to four feet may fall in the tetons with other areas
seeing one to two to three feet. Some of the higher mountain
areas may see wind gusts over 90 mph wednesday as the peak winds
occur.
Wyz013-221000-
/o.con.kriw.ws.w.0003.000000t0000z-120223t1200z/
jackson hole-
including the city of...jackson
227 pm mst tue feb 21 2012
...winter storm warning remains in effect until 5 am mst
thursday...
A winter storm warning remains in effect until 5 am mst thursday.
* summary and timing...snow will continue with moderate to heavy
snowfall expected this afternoon through mid day wednesday.
* snow accumulations...12 to 24 inches by early thursday. As of 2
pm 2 to 4 inches of snow has been reported in jackson hole.
* wind and visibility...south wind at 15 to 20 mph with gusts to
30 mph today...increasing to 25 to 35 mph with gusts near 50
mph on wednesday. Widespread limited visibility below a
quarter mile.
* impacts...area roads will become increasingly snow-packed
through the day today. Increasing wind will result in areas of
blowing and drifting snow and limited visibility this
afternoon through wednesday...especially along highway 390
around teton village and highway 191 from moose to moran
junction.
Precautionary/preparedness actions...
A winter storm warning for heavy snow means severe winter weather
conditions are expected or occurring. Significant amounts of
snow are forecast that will make travel dangerous. Only travel in
an emergency. If you must travel...keep an extra flashlight...
Food...and water in your vehicle in case of an emergency.
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.
High Wind Warning, Cody-Dubois-Lander-Casper and SouthEastern Wy, 2-21-2012
Urgent - weather message
national weather service riverton wy
251 pm mst tue feb 21 2012
...high winds in store east of the divide today and wednesday...
.a strong surface pressure gradient will combine with a strong
upper level jet to produce areas of high winds along and near the
east slopes of the mountains tonight into wednesday night. The high
wind threat will become more significant through wednesday evening.
Wyz020-221000-
/o.upg.kriw.hw.a.0009.120222t0900z-120223t0300z/
/o.exb.kriw.hw.w.0010.120222t0900z-120223t0300z/
natrona county lower elevations-
including the city of...casper
251 pm mst tue feb 21 2012
...high wind warning in effect from 2 am to 8 pm mst wednesday...
The national weather service in riverton has issued a high wind
warning...which is in effect from 2 am to 8 pm mst wednesday. The
high wind watch is no longer in effect.
* summary and timing...high winds may develop late tonight
continuing off and on through early wednesday evening.
* wind...west winds of 35 to 45 mph with gusts to 65 mph are
expected. Some wind gusts over 75 mph may occur on casper
mountain.
* impacts...strong and possibly damaging winds may develop.
Travel with light weight and high profile vehicles may become
dangerous on interstate 25 and highways 20 26...220 and 486 as
well as wyoming boulevard on the south side of casper.
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.
Hydrologic outlook
national weather service riverton wy
949 am mst fri mar 9 2012
..increased potential for ice jam flooding continues through early
next week...
...increased potential for snowmelt runoff flooding below 8000
feet continues through early next week...
Afternoon temperatures are expected to warm into the 50s to lower
60s across basins east of the continental divide saturday through
tuesday. Across basins west of the continental divide...afternoon
temperatures are expected to warm to near 50 saturday and sunday...
Cooling into the 40s by monday.
Rivers that are still iced over across the region are expected to
show significant ice breakup this weekend and into early next week.
As the ice breaks up and moves downstream...there will be an
increased chance of ice jamming that may result in flooding.
Bridges and areas where the river makes a sharp turn or bend are
most susceptible to ice jamming.
Snowmelt runoff below 8000 feet is expected to increase
significantly saturday through tuesday. As the excess runoff moves over
frozen and saturated ground...there will be an increased potential for
minor flooding. Low lying areas that include road crossings will be most
susceptible to flooding.
Report any significant ice jam flooding and or low land flooding to
emergency officials.
Urgent - fire weather message
national weather service rapid city sd
221 pm mdt tue mar 13 2012
...red flag warning continues through early this evening for low
relative humidities and gusty southwest winds for much of
northeast wyoming and western south dakota...
.unusually warm conditions will continue through early this
evening as high pressure dominates the weather pattern. A tight
pressure gradient will continue to bring gusty southwest winds
to the area through this afternoon...before slowly diminishing
this evening.
Sdz260>266-wyz259-297>299-140300-
/o.con.kunr.fw.w.0004.000000t0000z-120314t0300z/
northern black hills-northwestern south dakota plains-
southern black hills-southwestern south dakota-badlands area-
south central south dakota-central south dakota plains-
southern campbell-northern campbell-
lower elevations of crook and weston counties-wyoming black hills-
221 pm mdt tue mar 13 2012
...red flag warning remains in effect until 9 pm mdt this evening
for gusty southwest winds and low relative humidities for fire
zones 260 through 266 in south dakota...and fire zones 259...
297...298...and 299 in northeast wyoming...
A red flag warning remains in effect until 9 pm mdt this evening.
* winds...southwest 20 to 35 mph with gusts 45 mph across
western south dakota...and 25 to 40 mph with gusts to 50 mph
across northeast wyoming.
* relative humidity...falling to 10 to 15 percent during the
afternoon.
* temperatures...in the 70s to around 80 during the afternoon.
Some 60s in the black hills.
Precautionary/preparedness actions...
A red flag warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures will
create explosive fire growth potential.
Fire Weather Watch, NorthEastern Wyoming, 3-14-2012
Urgent - fire weather message
national weather service rapid city sd
251 pm mdt wed mar 14 2012
...fire weather watch in effect from friday morning through friday
evening for gusty southwest winds and low relative humidities for
northeast wyoming and western south dakota...
.an upper level ridge of high pressure will bring much above
average temperatures and dry conditions to the area on friday.
Near record temperatures are possible. In addition...low pressure
at the surface will move across southern canada...bringing very
gusty southwest winds to the northern plains. The combination of
gusty winds and a hot and dry atmosphere could bring critical fire
weather conditions to the area on friday.
Wyz259-297-298-151200-
/o.new.kunr.fw.a.0003.120316t1500z-120317t0300z/
southern campbell-northern campbell-
lower elevations of crook and weston counties-
251 pm mdt wed mar 14 2012
...fire weather watch in effect from friday morning through
friday evening for gusty southwest winds and low relative
humidities for fire zones 259...297...and 298 in northeast
wyoming...
The national weather service in rapid city has issued a fire
weather watch for gusty southwest winds and low relative
humidities...which is in effect from friday morning through
friday evening.
* affected area...fire weather zone 259 southern campbell...fire
weather zone 297 northern campbell and fire weather zone 298
lower elevations of crook and weston counties.
* winds...southwest 20 to 30 mph with gusts to 40 mph.
* relative humidity...falling to 15 to 20 percent in the
afternoon.
* temperatures...rising into the upper 60s to mid 70s.
Precautionary/preparedness actions...
A fire weather watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
red flag warnings.
Red Flag Warning, Extreme Eastern Edge of Wyoming, 3-16-2012
Urgent - fire weather message
national weather service rapid city sd
441 am mdt fri mar 16 2012
...red flag warning in effect from mid morning through this
evening for gusty southwest winds and low relative humidities for
northeast wyoming and western south dakota...
.an upper level ridge of high pressure will bring much above
average temperatures and dry conditions to the area today. Gusty
southwest winds combined with near record high temperatures will
produce critical fire weather conditions.
Sdz260-262-wyz299-161830-
/o.con.kunr.fw.w.0005.120316t1500z-120317t0300z/
northern black hills-southern black hills-wyoming black hills-
441 am mdt fri mar 16 2012
...red flag warning remains in effect from 9 am this morning to
9 pm mdt this evening for gusty southwest winds and low relative
humidities for fire zones 260 and 262 in south dakota...and fire
zone 299 in northeast wyoming...
* affected area...fire weather zone 260 northern black hills...
Fire weather zone 262 southern black hills and fire weather
zone 299 wyoming black hills.
* winds...southwest 15 to 25 mph.
* relative humidity...as low as 15 percent.
* temperatures...rising into the mid 60s to mid 70.
Precautionary/preparedness actions...
A red flag warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures will
create explosive fire growth potential.
Urgent - fire weather message
national weather service rapid city sd
223 pm mdt sun mar 18 2012
...red flag warning until 900 pm mdt this evening for gusty
winds...low humidity...and possible isolated thunderstorms with
dry lightning over northeastern wyoming...
...red flag warning until 900 pm mdt this evening for gusty winds
and low humidity over western and south central south dakota...
...red flag warning from 1100 am to 800 pm mdt on monday for gusty
winds and low humidity over western and south central south
dakota...
.a low pressure system over north central wyoming will produce
gusty southerly winds this afternoon and early evening. Due to
much warmer than average temperatures...very low humidity...gusty
southerly winds...and very dry fuels...critical fire weather
conditions will persist through early this evening. An isolated
thunderstorm or two is possible across northeastern wy late this
afternoon or early evening and could produce dry lightning.
On monday...gusty southwesterly winds will develop ahead of an
approaching cold front. Temperatures will be lower...but a very
dry airmass in place will drop relative humidities to around 15
percent across much of western and south central south dakota in
the afternoon. Critical fire weather conditions are expected to
develop over these areas in the afternoon and persist until around
sunset. A cold front will finally move through the area monday
night...bringing lower temperatures and higher humidities for
tuesday.
Wyz259-297>299-190300-
/o.con.kunr.fw.w.0007.000000t0000z-120319t0300z/
southern campbell-northern campbell-
lower elevations of crook and weston counties-wyoming black hills-
223 pm mdt sun mar 18 2012
...red flag warning remains in effect until 9 pm mdt this evening
for gusty winds...low humidity and possible dry lightning for
wyoming fire weather zones 259...and 297-299...
* affected area...fire weather zone 259 southern campbell...fire
weather zone 297 northern campbell...fire weather zone 298
lower elevations of crook and weston counties and fire weather
zone 299 wyoming black hills.
* winds...southerly at 15 to 30 mph with gusts to 40 mph.
* relative humidity...10 to 18 percent this afternoon.
* temperatures...highs will be in the upper 60s to mid 70s.
* lightning...isolated thunderstorms could develop late this
afternoon or early evening. If they do...dry lightning is
likely.
Precautionary/preparedness actions...
A red flag warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures will
create explosive fire growth potential.
Urgent - fire weather message
national weather service billings mt
201 pm mdt sun mar 25 2012
mtz130>133-wyz274-260815-
/o.upg.kbyz.fw.a.0002.120326t1800z-120327t1200z/
/o.new.kbyz.fw.w.0003.120326t1800z-120327t1200z/
northern rosebud/northern treasure counties-
northern cheyenne indian reservation/ashland ranger district
custer natl forest-custer county-
sioux ranger district custer national forest-sheridan county-
201 pm mdt sun mar 25 2012
...red flag warning in effect from noon monday to 6 am mdt
tuesday for low humidities...unseasonably warm
temperatures...strong gusty winds...thunderstorms...and a wind
shift with a cold front for all of southeast montana...parts of
northwest south dakota...and parts of north central wyoming...
The national weather service in billings has issued a red flag
warning...which is in effect from noon monday to 6 am mdt
tuesday. The fire weather watch is no longer in effect.
* affected area...in montana...fire zones...130...131...132...133
in wyoming...fire zone....274
* impacts...critical fire conditions are expected monday afternoon
and night as a result of unseasonably warm temperatures...low
humidities...gusty winds...isolated thunderstorms...and a
strong cold frontal passage with a dramatic wind shift.
* cold front...a strong cold front will move across the areas
early monday evening. This front will produce strong and gusty
west to northwest winds of 20 to 35 mph with gusts to 45 mph.
* wind...south to southeast winds of 10 to 20 mph with gusts to 30
mph are expected monday afternoon. Winds will shift to the west
and northwest early monday evening with winds increasing to 20
to 35 mph with gusts to 45 mph.
* thunderstorms...isolated thunderstorms ahead of the cold front
monday afternoon into monday evening will increase the potential
for lightning generated fires.
* humidity...as low as 15 percent monday afternoon and evening.
* temperatures...in the mid to upper 70s.
Precautionary/preparedness actions...
A red flag warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures will
create explosive fire growth potential.
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High Wind Warning, Sheridan County, 2-21-2012
