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Living vicariously through winter in late summer - Colorado snow / cold OBS


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Denver 9:00pm - 64 degrees, going to need to get down to 38 degrees to match the all time 1 day SEPT temp change of 55 degrees

snow, with temps in the low-mid 30's, is falling at a number of locations in northern / central Wyoming

Rain has moved into Cheyenne with the temp of 40 degrees, down 46 degrees from the 1:00pm high of 86

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Temperature spreads yesterday:

Denver - 93 / 43

Cheyenne - 86 / 32

Light rain beginning to transition in metro Denver, snowing now at Centennial Airport

Looks like a heavier batch of precip moving into Laramie, currently 26 degrees with a wind chill of 10

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guess I should have included Wyoming in the title as that's where most of the snow has fallen at this point, now appears any possible accumulation for Denver would be this evening, current point & click is for 2-4" tonight

Some pics from various Wyoming roadway cams:

I90MoskeeRdWest.jpg.7af0f7fc379ac12629aad8ac341db57a.jpg

WYO28RedCanyonSouthwest.jpg.a88a5d440a6a2d29c8f8db1d474949eb.jpg

WYO22TetonPassValley.jpg.0c5dabd09a074d2394f0e76585a85327.jpg

US26287WindRiverLakeEast.jpg.35a6a63bb6e462a6078dbde132e76d8e.jpg

 

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Multiple 80mph + gusts at the Rock Springs Airport, ASOS

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1259 PM MDT TUE SEP 8 2020

...24-HOUR SNOWFALL TOTALS AND PEAK WIND GUSTS ACROSS WESTERN AND 
CENTRAL WYOMING AS OF MIDDAY TUESDAY...

A STRONG EARLY SEASON WINTRY WEATHER SYSTEM PRODUCED WIDESPREAD 
LIGHT SNOW ACROSS THE REGION WITH UPSLOPE FAVORED AREAS SEEING 
HEAVIER SNOW. THE HIGHEST SNOW TOTALS GENERALLY OCCURRED IN THE 
FOOTHILLS ADJACENT TO THE EAST SLOPES OF THE WIND RIVER MOUNTAINS 
AND AROUND CASPER AND CASPER MOUNTAIN. THE COLD FRONT THE PUSHED 
THROUGH THE STATE MONDAY ALSO PRODUCED STRONG WIND GUSTS ACROSS THE 
AREA, MOST NOTABLY SOUTHWEST WYOMING.

FOLLOWING ARE THE PRELIMINARY 24-HOUR SNOWFALL TOTALS ENDING AT 1230 
PM TUESDAY ALONG WITH A LISTING OF PEAK WIND GUSTS OF 30 MPH OR MORE.

LOCATION                     AMOUNT    TIME/DATE       PROVIDER             

...FREMONT COUNTY...
7 NW LANDER                  10.0 IN   0802 AM 09/08   PUBLIC               
ATLANTIC CITY                10.0 IN   0800 AM 09/08   COOP                 
LANDER 6 SW                  9.6 IN    0700 AM 09/08   COCORAHS             
7 SW LANDER                  9.0 IN    0800 AM 09/08   PUBLIC               
10 WNW DUBOIS                8.0 IN    1233 PM 09/08   PUBLIC               
DUBOIS                       8.0 IN    0600 AM 09/08   COOP                 
FORT WASHAKIE 3.7 SE         7.1 IN    0715 AM 09/08   COCORAHS             
LANDER 1SW                   7.0 IN    0900 AM 09/08   COCORAHS             
LANDER                       6.0 IN    0803 AM 09/08   PUBLIC               
LANDER 1W                    5.1 IN    0930 AM 09/08   COCORAHS             
3 SW BURRIS                  5.0 IN    1232 PM 09/08   PUBLIC               
3 E DUBOIS                   4.5 IN    0757 AM 09/08   PUBLIC               
PAVILLION                    4.0 IN    0801 AM 09/08   PUBLIC               
LANDER 2NNW                  4.0 IN    0700 AM 09/08   COCORAHS             
NWS RIVERTON                 3.5 IN    0600 AM 09/08   NWS                
RIVERTON                     2.9 IN    0700 AM 09/08   COOP                 
4 WNW RIVERTON               2.8 IN    1229 PM 09/08   PUBLIC               
HUDSON                       2.5 IN    0630 AM 09/08   UCOOP                
RIVERTON 1 SE                1.3 IN    0715 AM 09/08   COCORAHS             

...HOT SPRINGS COUNTY...
THERMOPOLIS                  4.0 IN    0759 AM 09/08   PUBLIC               
THERMOPOLIS 6 NNE            3.0 IN    0600 AM 09/08   COCORAHS             
THERMOPOLIS 9NE              0.7 IN    0700 AM 09/08   COOP                 

...JOHNSON COUNTY...
BUFFALO 4 SSW                 6.0 IN    0700 AM 09/08   COCORAHS             
BUFFALO                       3.0 IN    0801 AM 09/08   PUBLIC               
KAYCEE 17 E                  2.1 IN    0700 AM 09/08   COCORAHS             
KAYCEE 17 NNW                2.0 IN    0700 AM 09/08   COCORAHS             
13 SSE BUFFALO                1.0 IN    0759 AM 09/08   PUBLIC               
BUFFALO 13 SSE                1.0 IN    0700 AM 09/08   COCORAHS             

...LINCOLN COUNTY...
AFTON                        0.8 IN    0800 AM 09/08   COOP                 
AFTON                        0.5 IN    0801 AM 09/08   PUBLIC               
THAYNE  5NNE                 0.5 IN    0700 AM 09/08   COCORAHS             
BEDFORD 3SE                  0.5 IN    0700 AM 09/08   COOP                 

...NATRONA COUNTY...
CASPER MOUNTAIN             17.0 IN    0812 AM 09/08   TRAINED SPOTTER                     
CASPER 10 WSW                9.0 IN    0730 AM 09/08   COCORAHS             
POWDER RIVER                 8.0 IN    0600 AM 09/08   COOP                 
4 SW MILLS                   7.1 IN    1229 PM 09/08   PUBLIC               
CASPER                       6.4 IN    0600 AM 09/08   OFFICIAL NWS OBS     
CASPER 1S                    6.1 IN    0700 AM 09/08   COCORAHS             
3 E EVANSVILLE               6.0 IN    0759 AM 09/08   PUBLIC               
ALCOVA                       3.0 IN    0801 AM 09/08   PUBLIC               
CASPER 18 SW                 2.0 IN    0700 AM 09/08   COCORAHS             

...PARK COUNTY...
MEETEETSE 2.0 SE             11.0 IN   0700 AM 09/08   COCORAHS             
EAST ENTRANCE - YNP          2.0 IN    0600 AM 09/08   COOP                 
CODY                         1.0 IN    0802 AM 09/08   PUBLIC               
CODY 2WSW                    1.0 IN    0700 AM 09/08   COCORAHS             
CODY 2NE                     1.0 IN    0700 AM 09/08   COCORAHS             

...SUBLETTE COUNTY...
PINEDALE 14 NW               0.8 IN    0600 AM 09/08   COCORAHS             

...SWEETWATER COUNTY...
GREEN RIVER                  5.0 IN    0802 AM 09/08   PUBLIC               
ROCK SPRINGS                 3.0 IN    0801 AM 09/08   PUBLIC               
ROCK SPRINGS 1 S             2.5 IN    0600 AM 09/08   COCORAHS             

...TETON COUNTY...
MORAN JUNCTION               2.5 IN    1012 PM 09/07   LAW ENFORCEMENT      
JACKSON 12 NE                2.0 IN    0937 AM 09/08   COCORAHS             
WILSON 3 SSW                 2.0 IN    0800 AM 09/08   COCORAHS             
JACKSON 5 NW                 1.9 IN    0700 AM 09/08   COCORAHS             
JACKSON                      0.1 IN    0900 AM 09/08   COOP                 

...WASHAKIE COUNTY...
TEN SLEEP                    1.0 IN    0850 AM 09/08   TRAINED SPOTTER      
TEN SLEEP                    0.3 IN    0700 AM 09/08   COCORAHS             


24-HOUR PEAK WIND GUSTS ENDING 1230 PM TUESDAY


                             SPEED     TIME/DATE       PROVIDER             

...BIG HORN COUNTY...
GREYBULL 30 E                44 MPH    1258 AM 09/08   RAWS                 
COWLEY AIRPORT               44 MPH    1255 PM 09/07   AWOS                 
LOVELL                       41 MPH    0115 PM 09/07   CWOP                 
HYATTVILLE 5 ENE             39 MPH    0552 PM 09/07   RAWS                 

...FREMONT COUNTY...
SOUTH PASS CITY 8 W          71 MPH    0650 AM 09/08   RAWS                 
SOUTH PASS CITY 2 W (WYDOT)  64 MPH    0656 AM 09/08   MESOWEST             
RIVERTON AIRPORT             48 MPH    0616 PM 09/07   ASOS                 
SOUTH PASS                   47 MPH    1055 PM 09/07   AWOS                 
ATLANTIC CITY 10 NE (WYDOT)  45 MPH    0536 AM 09/08   MESOWEST             
HUDSON 3 NNW                 44 MPH    0346 PM 09/07   RAWS                 
DUBOIS                       42 MPH    0340 PM 09/07   CWOP                 
MUDDY GAP 7 SW               41 MPH    0650 PM 09/07   RAWS                 
SHOSHONI                     40 MPH    0501 PM 09/07   CWOP                 
RIVERTON                     39 MPH    0445 AM 09/08   AWS                  
PAVILLION                    39 MPH    0545 PM 09/07   CWOP                 
DUBOIS AIRPORT               39 MPH    0535 PM 09/07   AWOS                 
ELKHORN                      36 MPH    0757 PM 09/07   RAWS                 
RIVERTON                     35 MPH    0545 PM 09/07   CWOP                 


...HOT SPRINGS COUNTY...
MEETEETSE 10 S               38 MPH    0742 PM 09/07   RAWS                 
THERMOPOLIS                  34 MPH    0310 PM 09/07   CWOP                 
KIRBY                        31 MPH    0747 PM 09/07   CWOP                 

...JOHNSON COUNTY...
I25 US87 - TISDALE DIVIDE    39 MPH    0642 PM 09/07   MESOWEST             
STORY 6 SE (WYDOT)           39 MPH    0316 PM 09/07   MESOWEST             
UCROSS 28 SE (WYDOT)         39 MPH    0256 PM 09/07   MESOWEST             
BARNUM 7 SW                  33 MPH    0646 AM 09/08   RAWS                 
KAYCEE                       31 MPH    1245 PM 09/07   CWOP                 

...LINCOLN COUNTY...
KEMMERER AIRPORT             62 MPH    0335 AM 09/08   AWOS                 
SAGE JUNCTION 2.7 E (UPR)    52 MPH    0230 AM 09/08   MESOWEST             
COKEVILLE 4 S (UPR)          52 MPH    0130 AM 09/08   MESOWEST             
STAR VALLEY RANCH            51 MPH    0601 PM 09/07   CWOP                 
SAGE JUNCTION 4 E (WYDOT)    50 MPH    1206 AM 09/08   MESOWEST             
FOSSIL BUTTE NATL MONUMENT 4 44 MPH    0436 AM 09/08   MESOWEST             
GRANGER 6 NW (WACNET)        40 MPH    1000 PM 09/07   MESOWEST             
B-T PORT NO. 4               40 MPH    0235 PM 09/07   RAWS                 
THAYNE                       39 MPH    0800 PM 09/07   CWOP                 
COKEVILLE (UTAH CLIMA)       38 MPH    0100 AM 09/08   MESOWEST             
DIAMONDVILLE 4 E (UPR)       36 MPH    0650 AM 09/08   MESOWEST             
BEDFORD                      36 MPH    0800 PM 09/07   CWOP                 
COKEVILLE 15 NE              36 MPH    0700 PM 09/07   RAWS                 
ETNA                         35 MPH    0545 PM 09/07   CWOP                 
ETNA                         34 MPH    0547 PM 09/07   CWOP                 
AFTON AIRPORT                33 MPH    0755 PM 09/07   AWOS                 

...NATRONA COUNTY...
CASPER AIRPORT               47 MPH    0316 PM 09/07   ASOS                 
HILAND 2.4 SE (WYDOT)        46 MPH    0534 PM 09/07   MESOWEST             
MILLS 2 NE (WYDOT)           46 MPH    0306 PM 09/07   MESOWEST             
I25 US87 - SMOKEY GAP        44 MPH    0446 PM 09/07   MESOWEST             
BAR NUNN 13.6 N (WYDOT)      43 MPH    0446 PM 09/07   MESOWEST             
NATRONA (WYDOT)              43 MPH    0412 PM 09/07   MESOWEST             
ALCOVA 7 W (WYDOT)           43 MPH    0326 PM 09/07   MESOWEST             
HILAND 16 S                  42 MPH    0810 AM 09/08   RAWS                 
I25 - HAT SIX                42 MPH    0432 AM 09/08   MESOWEST             
CASPER 8 S                   39 MPH    0552 PM 09/07   RAWS                 
CASPER                       38 MPH    0301 PM 09/07   CWOP                 
DEVILS GATE                  34 MPH    0600 PM 09/07   MESOWEST             
BAR NUNN                     32 MPH    0417 PM 09/07   CWOP                 
CASPER 2.1 SW (WYDOT)        30 MPH    0316 PM 09/07   MESOWEST             

...PARK COUNTY...
SYLVAN PASS 14 S - YNP       55 MPH    1008 PM 09/07   RAWS                 
MEETEETSE 8 N (WYDOT)        54 MPH    0406 PM 09/07   MESOWEST             
POWELL AIRPORT               45 MPH    0215 PM 09/07   AWOS                 
FRANNIE                      44 MPH    0350 PM 09/07   CWOP                 
DRY CREEK                    43 MPH    0546 PM 09/07   RAWS                 
CLARK                        43 MPH    0116 PM 09/07   CWOP                 
POWELL                       42 MPH    0100 PM 09/07   CWOP                 
POWELL                       41 MPH    0200 PM 09/07   CWOP                 
CODY AIRPORT                 36 MPH    0129 PM 09/07   AWOS                 
CRANDALL                     36 MPH    0112 PM 09/07   RAWS                 
PAHASKA 3 E                  33 MPH    0257 PM 09/07   RAWS                 
CODY                         31 MPH    0331 PM 09/07   CWOP                 

...SUBLETTE COUNTY...
PINEDALE AIRPORT             55 MPH    0510 AM 09/08   AWOS                 
BOULDER 3.3 W (WACNET)       50 MPH    1100 PM 09/07   MESOWEST             
BIG PINEY AIRPORT            45 MPH    1004 AM 09/08   ASOS                 
BIG PINEY 21 W               45 MPH    0709 PM 09/07   RAWS                 
PINEDALE 7 NE                44 MPH    0326 AM 09/08   RAWS                 
PINEDALE                     37 MPH    1025 PM 09/07   CWOP                 
DANIEL 9 S (WACNET)          33 MPH    0800 PM 09/07   MESOWEST             
BIG PINEY 4 W (UCC-AGNET)    33 MPH    0315 PM 09/07   MESOWEST             
BIG PINEY 11 W (WACNET)      32 MPH    0700 PM 09/07   MESOWEST             

...SWEETWATER COUNTY...
ROCK SPRINGS AIRPORT         86 MPH    1024 AM 09/08   ASOS                 
ROCK SPRINGS AIRPORT         86 MPH    0450 AM 09/08   ASOS                 
ROCK SPRINGS AIRPORT         83 MPH    0459 AM 09/08   ASOS                 
FARSON (WYDOT)               68 MPH    0242 AM 09/08   MESOWEST             
GREEN RIVER 1.2 NE (WYDOT)   67 MPH    0336 AM 09/08   MESOWEST             
ROCK SPRINGS 15 SE           61 MPH    1044 AM 09/08   RAWS                 
RELIANCE 5.2 SE (WYDOT)      61 MPH    0536 PM 09/07   MESOWEST             
RELIANCE 8 E (UPR)           60 MPH    1025 AM 09/08   MESOWEST             
SUPERIOR 6 SE (WYDOT)        60 MPH    0912 AM 09/08   MESOWEST             
WAMSUTTER 10.5 E (WYDOT)     60 MPH    0506 AM 09/08   MESOWEST             
SHUTE CREEK                  57 MPH    0312 AM 09/08   MESOWEST             
GREEN RIVER 9 W (UPR)        55 MPH    0115 AM 09/08   MESOWEST             
RED DESERT 16 W (UPR)        54 MPH    0640 AM 09/08   MESOWEST             
POINT OF ROCKS 5.5 SE (UPR)  53 MPH    0540 AM 09/08   MESOWEST             
WAMSUTTER 10 E (UPR)         53 MPH    0210 AM 09/08   MESOWEST             
POINT OF ROCKS 1.1 W (WYDOT) 50 MPH    0942 AM 09/08   MESOWEST             
ROCK SPRINGS 6 SW (UPR)      44 MPH    1030 AM 09/08   MESOWEST             
GRANGER 3 NE                 39 MPH    0255 AM 09/08   MESOWEST             
ROCK SPRINGS 3 NW            35 MPH    0525 AM 09/08   AWS                  
MCKINNON                     32 MPH    0331 AM 09/08   CWOP                 

...TETON COUNTY...
JACKSON HOLE MOUNTAIN RESORT 58 MPH    1130 PM 09/07   MESOWEST
TETON SADDLE (SNOWNET)       50 MPH    1000 AM 09/08   MESOWEST
WILSON 4.3 W (WYDOT)         48 MPH    0616 AM 09/08   MESOWEST
JACKSON HOLE AIRPORT         48 MPH    0539 PM 09/07   AWOS
MOOSE 4 N                    39 MPH    0458 PM 09/07   RAWS
MORAN JUNCTION 23 E (WYDOT)  38 MPH    0806 PM 09/07   MESOWEST
LAKE YELLOWSTONE - YNP       32 MPH    0653 PM 09/07   ASOS 
HOBACK                       31 MPH    0634 PM 09/07   CWOP                   

...WASHAKIE COUNTY...
WORLAND AIRPORT              48 MPH    0503 PM 09/07   ASOS                 
WORLAND 10 SSE               44 MPH    0517 PM 09/07   RAWS                 
RELIANCE 5 SE (WYDOT)        41 MPH    0501 PM 09/07   CWOP                 
BIG TRAILS 15 SSW            35 MPH    0840 PM 09/07   RAWS             
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Chatted with a friend in Jackson Hole last night. The amount of thunder and lightning he was having was unbelievable. I could hear the thunder on the phone for much of the conversation. I could hear the wind howling, and he said his anemometer was hitting the 55 mph range quite a bit. They had thunder snow as well, albeit for only about 2" of snow. He said it was quite the wild weather day there. 

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8 minutes ago, iceman56 said:

3rd greatest 24 hour temperature range since 1872 in DEN and for it to occur in early Sept. is even more dramatic:

Screen_Shot_2020_09_09_at_7_34_14_AM.png

The list you updated from NWS Denver is for calendar day temp changes, 12:00am-11:59pm not for any 24hr period so that does not apply. The actual 1 Day temp change for 9/7 was 50 degrees, 93 / 43.

For this event the 24 hour temp change was 60 degrees, 93 degrees to 33 degrees. Where that falls in terms of the greatest temp change during any 24hr. period I don't know.

 

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4 hours ago, colonel_kurtz said:

The list you updated from NWS Denver is for calendar day temp changes, 12:00am-11:59pm not for any 24hr period so that does not apply. The actual 1 Day temp change for 9/7 was 50 degrees, 93 / 43.

For this event the 24 hour temp change was 60 degrees, 93 degrees to 33 degrees. Where that falls in terms of the greatest temp change during any 24hr. period I don't know.

 

I assumed the chart was the temperature difference from one day to the next - dropping or rising, not necessarily based on any 24 hour period.   From CBS 4 in Denver:

Monday night an unprecedented cold front sweep into Colorado causing a 62 degree drop from the high of 93 degrees on Monday to the low of 31 degrees on Tuesday. It was the biggest 2 day temperature swing ever recorded in Denver in September.

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