Alert archive / Wyoming / Winter Storm Warnings in 2013
Winter Storm Warning 10, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter storm warning at Apr 21, 2013, 10:01 PM MDT for Albany County, Carbon County, Wyoming. It took effect at Apr 22, 2013, 12:00 AM MDT. It was in force for 24 hr. 1 report 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
- Apr 21, 2013, 10:01 PM MDT (04:01 UTC)
- In effect from
- Apr 22, 2013, 12:00 AM MDT
- Expired
- Apr 22, 2013, 11:53 PM MDT
- In force
- 24 hr
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY
The radar
The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 04:01 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 22, 1:37 PM MDT | SNOW 1.8 | 6 W Buford, WY | 0.20 INCH LIQUID. |
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, 4.0 hours before the alert went out and 230 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.
- Mixed-layer CAPE
- 278 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 2149 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
969 WWUS45 KCYS 220401 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 1001 PM MDT SUN APR 21 2013 ...LATE SEASON WINTER STORM TO BRING ACCUMULATING SNOWS TO SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE... .A COLD FRONT WILL MOVE SOUTH ACROSS THE AREA FROM LATE TONIGHT THROUGH EARLY MONDAY MORNING. MUCH COLDER AIR AND GUSTY NORTH TO NORTHEAST WINDS WILL OCCUR BEHIND THE FRONT WITH WIDESPREAD SNOW AND BLOWING SNOW DEVELOPING AFTER MIDNIGHT. THE HEAVIEST SNOW IS EXPECTED OVER THE SNOWY AND SIERRA MADRE MOUNTAIN RANGES...WHERE A WINTER STORM WARNING IS IN EFFECT. LESSER ACCUMULATIONS ARE EXPECTED OVER THE HIGH PLAINS OF SOUTHEAST WYOMING AND THE NORTHERN NEBRASKA PANHANDLE...BUT THE COMBINATION OF SNOW AND BLOWING SNOW WILL MAKE FOR HAZARDOUS TRAVEL. WYZ112-114-221615- /O.UPG.KCYS.WS.A.0009.130422T1200Z-130423T0600Z/ /O.NEW.KCYS.WS.W.0010.130422T0600Z-130423T1200Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 1001 PM MDT SUN APR 21 2013 ...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MDT TUESDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT UNTIL 6 AM MDT TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...SNOW WILL DEVELOP OVER THE SNOWY AND SIERRA MADRE MOUNTAIN RANGES BY EARLY MONDAY MORNING...BECOMING HEAVY AT TIMES ON MONDAY AFTERNOON AND NIGHT. * TOTAL SNOW ACCUMULATIONS...8 TO 14 INCHES. HIGHER AMOUNTS ARE POSSIBLE OVER NORTH AND NORTHEAST FACING SLOPES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH MAY CAUSE BLOWING AND DRIFTING SNOW WITH VISIBILITIES LESS THAN ONE QUARTER MILE AT TIMES. * IMPACTS...TRAVEL AND OUTDOOR RECREATION ACTIVITIES MAY BECOME DIFFICULT...IF NOT IMPOSSIBLE MONDAY MORNING THROUGH TUESDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... AVOID TRAVEL IN THE WARNING AREA. IF YOU ARE PLANNING TO TRAVEL IN THE WARNING AREA...LISTEN TO THE LATEST WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE. IF YOU MUST TRAVEL IN THE WARNING AREA...USE EXTREME CAUTION WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS...TAKE ALONG A WINTER SURVIVAL KIT. IF YOU BECOME STRANDED IN A RURAL AREA...STAY WITH YOUR VEHICLE UNTIL HELP ARRIVES. TO KEEP WARM IN YOUR VEHICLE...RUN YOUR ENGINE 10 MINUTES EACH HOUR...AND MAKE SURE THE EXHAUST PIPE IS CLEAR OF SNOW TO AVOID CARBON MONOXIDE POISONING. && $$ NEZ002-095-WYZ101>103-221615- /O.CON.KCYS.WW.Y.0026.130422T0600Z-130423T0000Z/ DAWES-NORTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE- INCLUDING THE CITIES OF...CHADRON...HARRISON...DOUGLAS... GLENROCK...LUSK 1001 PM MDT SUN APR 21 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT MONDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT MONDAY. * TIMING...SNOW WILL DEVELOP EARLY MONDAY MORNING AND CONTINUE THROUGH MONDAY AFTERNOON. * TOTAL SNOW ACCUMULATIONS...GENERALLY 3 TO 5 INCHES. HIGHER AMOUNTS NEAR 5 TO 9 INCHES ARE POSSIBLE OVER THE NORTHERN LARAMIE RANGE...ESPECIALLY ON NORTH FACING SLOPES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE LIKELY. THIS WILL LEAD TO AREAS OF BLOWING SNOW REDUCING VISIBILITIES TO UNDER A HALF MILE AT TIMES. * IMPACTS...AREA ROADS WILL BECOME SNOW COVERED AND SLICK. DRIVING WILL BECOME HAZARDOUS SHORTLY AFTER MIDNIGHT TONIGHT WITH SLICK ROADS AND REDUCED VISIBILITIES THROUGH MONDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ WYZ106>108-115>118-221615- /O.CON.KCYS.WW.Y.0026.130422T1200Z-130423T0600Z/ CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-LARAMIE VALLEY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY- INCLUDING THE CITIES OF...BORDEAUX...GLENDO...WHEATLAND... CHUGWATER...GUERNSEY...TORRINGTON...LARAMIE...VEDAUWOO...BUFORD... PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER...CHEYENNE 1001 PM MDT SUN APR 21 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT MDT MONDAY NIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT MDT MONDAY NIGHT. * TIMING...SNOW WILL DEVELOP AFTER MIDNIGHT TONIGHT WITH THE PASSAGE OF THE COLD FRONT AND CONTINUE THROUGH MONDAY NIGHT. * TOTAL SNOW ACCUMULATIONS...GENERALLY 2 TO 4 INCHES OVER THE SOUTHEAST WYOMING PLAINS. HIGHER AMOUNTS NEAR 3 TO 6 INCHES ARE EXPECTED OVER THE CENTRAL AND SOUTHERN LARAMIE RANGE. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE EXPECTED. THESE WINDS WILL CREATE AREAS OF BLOWING SNOW WITH VISIBILITIES REDUCED TO LESS THAN A HALF MILE AT TIMES. * IMPACTS...AREA ROADS WILL BECOME SNOW COVERED AND SLICK. DRIVING WILL BECOME HAZARDOUS SHORTLY AFTER MIDNIGHT TONIGHT WITH SLICK ROADS AND REDUCED VISIBILITIES THROUGH MONDAY NIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ HAMMER/LIEBL
4 follow-up statements
670 WWUS45 KCYS 221042 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 442 AM MDT MON APR 22 2013 ...A LATE SEASON WINTER STORM WILL BRING ACCUMULATING SNOW TO SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE THROUGH TONIGHT... .A COLD FRONT WILL MOVE SOUTH ACROSS ALL OF SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE BY LATE THIS MORNING. MUCH COLDER AIR AND GUSTY NORTHERLY WINDS WILL OCCUR BEHIND THE FRONT WITH WIDESPREAD SNOW AND BLOWING SNOW DEVELOPING FROM NORTH TO SOUTH DURING THE DAY. THE HEAVIEST SNOW IS EXPECTED OVER THE SNOWY AND SIERRA MADRE MOUNTAIN RANGES...WHERE A WINTER STORM WARNING IS IN EFFECT. LESSER ACCUMULATIONS ARE EXPECTED OVER THE HIGH PLAINS OF SOUTHEAST WYOMING AND THE NORTHERN NEBRASKA PANHANDLE...BUT THE COMBINATION OF SNOW AND BLOWING SNOW WILL MAKE FOR HAZARDOUS TRAVEL. NEZ002-095-WYZ101>103-222200- /O.CAN.KCYS.WW.Y.0026.000000T0000Z-130423T0000Z/ /O.NEW.KCYS.WW.Y.0027.130422T1200Z-130423T0000Z/ DAWES-NORTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE- INCLUDING THE CITIES OF...CHADRON...HARRISON...DOUGLAS... GLENROCK...LUSK 442 AM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT THIS EVENING. * TIMING...SNOW WILL DEVELOP BY MID MORNING AND CONTINUE THROUGH THE AFTERNOON. * TOTAL SNOW ACCUMULATIONS...GENERALLY 2 TO 4 INCHES. HIGHER AMOUNTS NEAR 5 TO 9 INCHES ARE POSSIBLE OVER THE NORTHERN LARAMIE RANGE...ESPECIALLY ON NORTH FACING SLOPES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE LIKELY. THIS WILL LEAD TO AREAS OF BLOWING SNOW REDUCING VISIBILITIES TO UNDER A HALF MILE AT TIMES. * IMPACTS...AREA ROADS WILL BECOME SNOW COVERED AND SLICK. DRIVING WILL BECOME HAZARDOUS SHORTLY AFTER MIDNIGHT TONIGHT WITH SLICK ROADS AND REDUCED VISIBILITIES THROUGH MONDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ WYZ112-114-222200- /O.CON.KCYS.WS.W.0010.000000T0000Z-130423T1200Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 442 AM MDT MON APR 22 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY. * TIMING...SNOW WILL CONTINUE OVER THE SNOWY AND SIERRA MADRE MOUNTAIN RANGES THROUGH TONIGHT. THE SNOW WILL BE HEAVY AT TIMES THIS AFTERNOON AND EARLY TONIGHT. * TOTAL SNOW ACCUMULATIONS...6 TO 12 INCHES. HIGHER AMOUNTS ARE POSSIBLE OVER NORTH AND NORTHEAST FACING SLOPES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH WILL CAUSE BLOWING AND DRIFTING SNOW WITH VISIBILITIES LESS THAN ONE QUARTER MILE AT TIMES. * IMPACTS...TRAVEL AND OUTDOOR RECREATION ACTIVITIES MAY BECOME DIFFICULT...IF NOT IMPOSSIBLE THROUGH TUESDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... AVOID TRAVEL IN THE WARNING AREA. IF YOU ARE PLANNING TO TRAVEL IN THE WARNING AREA...LISTEN TO THE LATEST WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE. IF YOU MUST TRAVEL IN THE WARNING AREA...USE EXTREME CAUTION WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS...TAKE ALONG A WINTER SURVIVAL KIT. IF YOU BECOME STRANDED IN A RURAL AREA... STAY WITH YOUR VEHICLE UNTIL HELP ARRIVES. TO KEEP WARM IN YOUR VEHICLE...RUN YOUR ENGINE 10 MINUTES EACH HOUR...AND MAKE SURE THE EXHAUST PIPE IS CLEAR OF SNOW TO AVOID CARBON MONOXIDE POISONING. && $$ WYZ119-222200- /O.EXB.KCYS.WW.Y.0026.130422T1800Z-130423T0600Z/ EAST LARAMIE COUNTY- INCLUDING THE CITIES OF...BURNS...CARPENTER...ALBIN...PINE BLUFFS 442 AM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT. * TIMING...SNOW WILL DEVELOP THIS MORNING AND CONTINUE THROUGH TONIGHT. * TOTAL SNOW ACCUMULATIONS...GENERALLY 2 TO 4 INCHES OVER THE SOUTHEAST WYOMING PLAINS. HIGHER AMOUNTS NEAR 3 TO 6 INCHES ARE EXPECTED OVER THE CENTRAL AND SOUTHERN LARAMIE RANGE. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE EXPECTED. THESE WINDS WILL CREATE AREAS OF BLOWING SNOW WITH VISIBILITIES REDUCED TO LESS THAN A HALF MILE AT TIMES. * IMPACTS...AREA ROADS WILL BECOME SNOW COVERED AND SLICK. DRIVING WILL BECOME HAZARDOUS SHORTLY AFTER MIDNIGHT TONIGHT WITH SLICK ROADS AND REDUCED VISIBILITIES THROUGH MONDAY NIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ WYZ106>108-115>118-222200- /O.EXT.KCYS.WW.Y.0026.130422T1800Z-130423T0600Z/ CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-LARAMIE VALLEY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY- INCLUDING THE CITIES OF...BORDEAUX...GLENDO...WHEATLAND... CHUGWATER...GUERNSEY...TORRINGTON...LARAMIE...VEDAUWOO...BUFORD... PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER...CHEYENNE 442 AM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT. * TIMING...SNOW WILL DEVELOP OVER THE AREA THIS MORNING AND WILL THEN CONTINUE THROUGH MONDAY NIGHT. * TOTAL SNOW ACCUMULATIONS...GENERALLY 2 TO 4 INCHES OVER THE SOUTHEAST WYOMING PLAINS. HIGHER AMOUNTS NEAR 3 TO 6 INCHES ARE EXPECTED OVER THE CENTRAL AND SOUTHERN LARAMIE RANGE. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE EXPECTED. THESE WINDS WILL CREATE AREAS OF BLOWING SNOW WITH VISIBILITIES REDUCED TO LESS THAN A HALF MILE AT TIMES. * IMPACTS...AREA ROADS WILL BECOME SNOW COVERED AND SLICK. DRIVING WILL BECOME HAZARDOUS SHORTLY AFTER MIDNIGHT TONIGHT WITH SLICK ROADS AND REDUCED VISIBILITIES THROUGH MONDAY NIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ WEILAND
900 WWUS45 KCYS 222132 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 332 PM MDT MON APR 22 2013 ...A LATE SEASON WINTER STORM WILL BRING ACCUMULATING SNOW TO SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE THROUGH TONIGHT... .A STRONG COLD FRONT WILL MOVE SOUTH ACROSS NORTHERN COLORADO THROUGH EARLY EVENING. MUCH COLDER AIR HAS BEGAN TO INFILTRATE SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE LATE THIS AFTERNOON ALONG WITH GUSTY NORTHERLY WINDS. AREAS OF SNOW WILL CONTINUE THROUGH EARLY TUESDAY MORNING...ESPECIALLY FROM THE SNOWY AND SIERRA MADRE MOUNTAINS EASTWARD ALONG THE COLORADO AND WYOMING STATE LINE. THE HEAVIEST SNOW WILL OCCUR OVER THE MOUNTAINS...WHERE A WINTER STORM WARNING IS IN EFFECT. LESSER ACCUMULATIONS ARE EXPECTED OVER THE HIGH PLAINS OF SOUTHEAST WYOMING AND THE NORTHERN NEBRASKA PANHANDLE...BUT TRAVEL WILL REMAIN HAZARDOUS DUE TO A COMBINATION OF SNOW AND BLOWING SNOW. WYZ112-114-231200- /O.CON.KCYS.WS.W.0010.000000T0000Z-130423T1200Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 332 PM MDT MON APR 22 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY. * TIMING...MODERATE TO HEAVY SNOW WILL CONTINUE OVER THE SNOWY AND SIERRA MADRE MOUNTAIN RANGES THROUGH TONIGHT. * TOTAL SNOW ACCUMULATIONS...8 TO 14 INCHES. HIGHER AMOUNTS ARE POSSIBLE OVER NORTH AND NORTHEAST FACING SLOPES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH WILL CAUSE BLOWING AND DRIFTING SNOW WITH VISIBILITIES LESS THAN ONE QUARTER MILE AT TIMES. * IMPACTS...TRAVEL AND OUTDOOR RECREATION ACTIVITIES MAY BECOME DIFFICULT...IF NOT IMPOSSIBLE THROUGH TUESDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... AVOID TRAVEL IN THE WARNING AREA. IF YOU ARE PLANNING TO TRAVEL IN THE WARNING AREA...LISTEN TO THE LATEST WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE. IF YOU MUST TRAVEL IN THE WARNING AREA...USE EXTREME CAUTION WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS...TAKE ALONG A WINTER SURVIVAL KIT. IF YOU BECOME STRANDED IN A RURAL AREA... STAY WITH YOUR VEHICLE UNTIL HELP ARRIVES. TO KEEP WARM IN YOUR VEHICLE...RUN YOUR ENGINE 10 MINUTES EACH HOUR...AND MAKE SURE THE EXHAUST PIPE IS CLEAR OF SNOW TO AVOID CARBON MONOXIDE POISONING. && $$ WYZ119-230600- /O.CON.KCYS.WW.Y.0026.000000T0000Z-130423T0600Z/ EAST LARAMIE COUNTY- INCLUDING THE CITIES OF...BURNS...CARPENTER...ALBIN...PINE BLUFFS 332 PM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT. * TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. * TOTAL SNOW ACCUMULATIONS...2 TO 4 INCHES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE EXPECTED. THESE WINDS WILL CREATE AREAS OF BLOWING SNOW WITH VISIBILITIES REDUCED TO LESS THAN A HALF MILE AT TIMES. * IMPACTS...ROADS MAY BECOME SLICK AND SNOW COVERED ALONG WITH REDUCED VISIBILITIES IN SNOW AND BLOWING SNOW. TRAVEL WILL REMAIN HAZARDOUS THROUGH TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ NEZ002-095-WYZ101>103-230000- /O.CON.KCYS.WW.Y.0027.000000T0000Z-130423T0000Z/ DAWES-NORTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE- INCLUDING THE CITIES OF...CHADRON...HARRISON...DOUGLAS... GLENROCK...LUSK 332 PM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING. * TIMING...SNOW WILL CONTINUE THROUGH LATE AFTERNOON. * TOTAL SNOW ACCUMULATIONS...GENERALLY 2 TO 4 INCHES. HIGHER AMOUNTS NEAR 5 TO 9 INCHES ARE POSSIBLE OVER THE NORTHERN LARAMIE RANGE...ESPECIALLY ON NORTH FACING SLOPES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE LIKELY. THIS WILL LEAD TO AREAS OF BLOWING SNOW REDUCING VISIBILITIES TO UNDER A HALF MILE AT TIMES. * IMPACTS...ROADS MAY BECOME SLICK AND SNOW COVERED ALONG WITH REDUCED VISIBILITIES. TRAVEL WILL REMAIN HAZARDOUS THROUGH EARLY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ WYZ106>108-115>118-230600- /O.CON.KCYS.WW.Y.0026.000000T0000Z-130423T0600Z/ CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-LARAMIE VALLEY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY- INCLUDING THE CITIES OF...BORDEAUX...GLENDO...WHEATLAND... CHUGWATER...GUERNSEY...TORRINGTON...LARAMIE...VEDAUWOO...BUFORD... PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER...CHEYENNE 332 PM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT. * TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. * TOTAL SNOW ACCUMULATIONS...GENERALLY 2 TO 4 INCHES OVER THE SOUTHEAST WYOMING PLAINS. HIGHER AMOUNTS NEAR 3 TO 6 INCHES ARE EXPECTED OVER THE CENTRAL AND SOUTHERN LARAMIE RANGE. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE EXPECTED. THESE WINDS WILL CREATE AREAS OF BLOWING SNOW WITH VISIBILITIES REDUCED TO LESS THAN A HALF MILE AT TIMES. * IMPACTS...ROADS MAY BECOME SLICK AND SNOW COVERED ALONG WITH REDUCED VISIBILITIES IN SNOW AND BLOWING SNOW. TRAVEL WILL REMAIN HAZARDOUS THROUGH TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ HAMMER/LIEBL
079 WWUS45 KCYS 222356 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 556 PM MDT MON APR 22 2013 ...SNOW ENDING ACROSS EAST CENTRAL WYOMING AND THE NORTHERN NEBRASKA PANHANDLE... ...ACCUMULATING SNOW STILL POSSIBLE OVER THE MOUNTAINS AND ADJACENT HIGH PLAINS OF SOUTHEAST WYOMING... .A STRONG COLD FRONT WILL MOVE SOUTH ACROSS NORTHERN COLORADO THROUGH THIS EVENING. MUCH COLDER AIR HAS BEGAN TO INFILTRATE SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE LATE THIS AFTERNOON ALONG WITH GUSTY NORTHERLY WINDS. AREAS OF SNOW WILL CONTINUE THROUGH EARLY TUESDAY MORNING...ESPECIALLY FROM THE SNOWY AND SIERRA MADRE MOUNTAINS EASTWARD ALONG THE COLORADO AND WYOMING STATE LINE. THE HEAVIEST SNOW WILL OCCUR OVER THE MOUNTAINS...WHERE A WINTER STORM WARNING IS IN EFFECT. LESSER ACCUMULATIONS ARE EXPECTED OVER THE HIGH PLAINS OF SOUTHEAST WYOMING...BUT TRAVEL WILL REMAIN HAZARDOUS DUE TO A COMBINATION OF SNOW AND BLOWING SNOW. NEZ002-095-WYZ101>103-230100- /O.EXP.KCYS.WW.Y.0027.000000T0000Z-130423T0000Z/ DAWES-NORTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE- INCLUDING THE CITIES OF...CHADRON...HARRISON...DOUGLAS... GLENROCK...LUSK 556 PM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM MDT THIS EVENING... THE WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM MDT THIS EVENING. THE ACCUMULATING SNOW HAS ENDED ACROSS SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE. LOCALLY REDUCED VISIBILITIES TO NEAR ONE MILE ARE STILL POSSIBLE IN BLOWING SNOW AS NORTHEAST WINDS WILL GUST BETWEEN 20 AND 30 MPH THROUGH LATE EVENING...BUT THE THREAT FOR SEVERE WINTER WEATHER CONDITIONS HAS ENDED. THUS... THE WINTER WEATHER ADVISORY HAS BEEN ALLOWED TO EXPIRE. $$ WYZ112-114-231200- /O.CON.KCYS.WS.W.0010.000000T0000Z-130423T1200Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 556 PM MDT MON APR 22 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY. * TIMING...MODERATE TO HEAVY SNOW WILL CONTINUE OVER THE SNOWY AND SIERRA MADRE MOUNTAIN RANGES THROUGH TONIGHT. * TOTAL SNOW ACCUMULATIONS...8 TO 14 INCHES. HIGHER AMOUNTS ARE POSSIBLE OVER NORTH AND NORTHEAST FACING SLOPES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH WILL CAUSE BLOWING AND DRIFTING SNOW WITH VISIBILITIES LESS THAN ONE QUARTER MILE AT TIMES. * IMPACTS...TRAVEL AND OUTDOOR RECREATION ACTIVITIES MAY BECOME DIFFICULT...IF NOT IMPOSSIBLE THROUGH TUESDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... AVOID TRAVEL IN THE WARNING AREA. IF YOU ARE PLANNING TO TRAVEL IN THE WARNING AREA...LISTEN TO THE LATEST WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE. IF YOU MUST TRAVEL IN THE WARNING AREA...USE EXTREME CAUTION WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS...TAKE ALONG A WINTER SURVIVAL KIT. IF YOU BECOME STRANDED IN A RURAL AREA... STAY WITH YOUR VEHICLE UNTIL HELP ARRIVES. TO KEEP WARM IN YOUR VEHICLE...RUN YOUR ENGINE 10 MINUTES EACH HOUR...AND MAKE SURE THE EXHAUST PIPE IS CLEAR OF SNOW TO AVOID CARBON MONOXIDE POISONING. && $$ WYZ119-230600- /O.CON.KCYS.WW.Y.0026.000000T0000Z-130423T0600Z/ EAST LARAMIE COUNTY- INCLUDING THE CITIES OF...BURNS...CARPENTER...ALBIN...PINE BLUFFS 556 PM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT. * TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. * TOTAL SNOW ACCUMULATIONS...2 TO 4 INCHES. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE EXPECTED. THESE WINDS WILL CREATE AREAS OF BLOWING SNOW WITH VISIBILITIES REDUCED TO LESS THAN A HALF MILE AT TIMES. * IMPACTS...ROADS MAY BECOME SLICK AND SNOW COVERED ALONG WITH REDUCED VISIBILITIES IN SNOW AND BLOWING SNOW. TRAVEL WILL REMAIN HAZARDOUS THROUGH TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ WYZ106>108-115>118-230600- /O.CON.KCYS.WW.Y.0026.000000T0000Z-130423T0600Z/ CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-LARAMIE VALLEY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY- INCLUDING THE CITIES OF...BORDEAUX...GLENDO...WHEATLAND... CHUGWATER...GUERNSEY...TORRINGTON...LARAMIE...VEDAUWOO...BUFORD... PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER...CHEYENNE 556 PM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT. * TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. * TOTAL SNOW ACCUMULATIONS...GENERALLY 2 TO 4 INCHES OVER THE SOUTHEAST WYOMING PLAINS. HIGHER AMOUNTS NEAR 3 TO 6 INCHES ARE EXPECTED OVER THE CENTRAL AND SOUTHERN LARAMIE RANGE. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH ARE EXPECTED. THESE WINDS WILL CREATE AREAS OF BLOWING SNOW WITH VISIBILITIES REDUCED TO LESS THAN A HALF MILE AT TIMES. * IMPACTS...ROADS MAY BECOME SLICK AND SNOW COVERED ALONG WITH REDUCED VISIBILITIES IN SNOW AND BLOWING SNOW. TRAVEL WILL REMAIN HAZARDOUS THROUGH TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ HAMMER/LIEBL
675 WWUS45 KCYS 230553 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 1153 PM MDT MON APR 22 2013 ...SNOWFALL EVENT COMING TO AN END... .SNOW WILL CONTINUE TO DECREASE IN AREAL COVERAGE THE REST OF THE NIGHT AS THE STORM SYSTEM MOVES FURTHER AWAY. WYZ112-114-230700- /O.CAN.KCYS.WS.W.0010.000000T0000Z-130423T1200Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 1153 PM MDT MON APR 22 2013 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER STORM WARNING. ALTHOUGH LIGHT SNOW WILL CONTINUE THE REST OF THE NIGHT... ADDITIONAL ACCUMULATIONS WILL BE QUITE MINIMAL. $$ WYZ106>108-115>119-230700- /O.CAN.KCYS.WW.Y.0026.000000T0000Z-130423T0600Z/ CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-LARAMIE VALLEY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- INCLUDING THE CITIES OF...BORDEAUX...GLENDO...WHEATLAND... CHUGWATER...GUERNSEY...TORRINGTON...LARAMIE...VEDAUWOO...BUFORD... PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER...CHEYENNE... BURNS...CARPENTER...ALBIN...PINE BLUFFS 1153 PM MDT MON APR 22 2013 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER WEATHER ADVISORY. SNOW WILL CONTINUE TO DECREASE IN AREAL COVERAGE THE REST OF THE NIGHT...WITH LITTLE ADDITIONAL ACCUMULATION. $$ RUBIN
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this winter storm warning went out at Apr 21, 5:21 PM MDT, 4 hours 40 minutes earlier.
Area forecast discussion, Apr 21, 5:21 PM MDT, 4 hours 40 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
521 PM MDT SUN APR 21 2013
.SHORT TERM...(THIS EVENING THROUGH MONDAY)
ISSUED AT 300 PM MDT SUN APR 21 2013
WATER VAPOR IMAGERY ANIMATION AT MID AFTERNOON SHOWED A UPPER
LEVEL SHORTWAVE MOVING EAST ACROSS WYOMING. A MORE POTENT SHORTWAVE
TROUGH WAS APPROACHING THE NORTHERN ROCKIES FROM SOUTHERN BRITISH
COLUMBIA. REGIONAL 12Z SOUNDINGS AND LAPS DATA INDICATED RATHER
STEEP LAPSE RATES IN THE MID LEVELS WITH 500MB TEMPERATURES
BETWEEN -20 AND -25C. GOOD INSULATION HAS RESULTED IN SCATTERED
CONVECTION ACROSS MUCH OF THE CWA. A FEW LIGHTNING STRIKES WERE
SEEN OVER NORTHEAST WYOMING. SHOWERS AND ISOLATED TSTORMS ARE
EXPECTED FOR THE REMAINDER OF THE AFTERNOON...MAINLY FROM EAST
CENTRAL WYOMING INTO THE NEBRASKA PANHANDLE. A COLD FRONT EXTENDED
FROM SOUTHWEST MONTANA THROUGH NORTHEAST WYOMING INTO CENTRAL
SOUTH DAKOTA. IT WAS BREEZY OVER MUCH OF WYOMING WITH WESTERLY
WINDS OF 25 TO 35 MPH. TEMPERATURES RANGED FROM THE 30S IN THE
MOUNTAINS TO THE 50S ACROSS SOUTHEAST WYOMING AND NEBRASKA
PANHANDLE.
THE 12Z SHORT RANGE MODELS ARE IN GOOD AGREEMENT BRINGING THE
SHORTWAVE TROUGH ACROSS MONTANA AND WYOMING DURING THE NEXT 24
TO 36 HOURS. THE COLD FRONT TO OUR NORTH WILL CONTINUE TO PUSH
SLOWLY SOUTH INTO EAST CENTRAL WYOMING AND NORTHERN PANHANDLE
THIS EVENING...NEAR THE COLORADO BORDER BY MONDAY MORNING...AND
STALL ALONG THE NORTHERN COLORADO FRONT RANGE MONDAY. RAINS
SHOWERS WILL CHANGE TO SNOW AS MUCH COLDER AIR INVADES THE
LOWER LEVELS.
THERE WILL BE GOOD QG ASCENT WITH THE PRESENCE OF A RATHER FAST
UPPER LEVEL JET MOVING ACROSS SOUTHERN WYOMING AND NORTHERN
COLORADO MONDAY. THIS MAY RESULT IN BANDED HEAVIER PRECIPITATION...
MAINLY OVER THE HIGHER TERRAIN OF SOUTHEAST WYOMING. THE MODELS
HAVE BEEN CONSISTENT DEPICTING LESSER SNOW AMOUNTS ACROSS THE
SOUTHEAST WYOMING PLAINS AND ALL BUT THE NORTHERN PANHANDLE MONDAY
MORNING THROUGH MONDAY NIGHT. THESE AREAS WILL GENERALLY RECEIVE
FROM 1 TO 3 INCHES. AREAS FROM DOUGLAS TO CHADRON CAN EXPECT 3 TO
5 INCHES...WITH 5 TO 9 INCHES ALONG THE LARAMIE RANGE. THE
HEAVIEST ACCUMULATIONS ARE FORECAST FOR THE SNOWY AND SIERRA
MADRES WITH 7 TO 14 INCHES. LOCALLY HIGHER AMOUNTS WILL BE
POSSIBLE ALONG NORTH AND NORTHEAST FACING SLOPES. IN ADDITION TO
THE SNOWFALL...GUSTY NORTH TO NORTHEAST WINDS OF 25 TO 35 MPH WILL
CREATE AREAS OF BLOWING SNOW...POOR VISIBILITIES AND HAZARDOUS
TRAVEL.
TONIGHT/S LOWS WILL BE IN THE 20S AND 30S. TEMPERATURES MONDAY
WILL BE FALLING THROUGH THE DAY AS 700MB TEMPERATURES DECLINE
FROM -4 TO -8C EARLY TO -12 TO -16C BY MONDAY EVENING. THE SNOW
WILL BEGIN TO TAPER OFF FROM NORTH TO SOUTH MONDAY NIGHT AS THE
UPPER SUPPORT SHIFTS SOUTHEAST OF THE CWA. ADDITIONAL SNOW
ACCUMULATIONS WILL RANGE FROM 2 TO 4 INCHES OVER THE SNOWY AND
SOUTH LARAMIE RANGE TO 1 TO 2 INCHES FOR THE ADJACENT VALLEYS
AND SOUTHEAST WYOMING PLAINS. LOW TEMPERATURES MONDAY NIGHT WILL
BOTTOM OUT IN THE SINGLE DIGITS MOUNTAIN ZONES TO THE TEENS
ELSEWHERE.
.LONG TERM...(TUESDAY THROUGH SATURDAY)
ISSUED AT 300 PM MDT SUN APR 21 2013
THE LONG TERM WILL FEATURE WARMING TEMPS ESPECIALLY AFTER MIDWEEK.
ALL THE PRECIP SHOULD BE DONE BY TUES AFTN AS THE UPPER LEVEL SYSTEM
CONTINUES TO TREK SOUTHEASTWARD AND OUT OF THE REGION. COLD AIRMASS
IN ITS WAKE WILL COMBINE WITH SNOW COVER FROM MON TO RESULT IN A
CHILLY TUES. CLIPPER SYSTEM MOVES ACROSS THE NORTHERN PLAINS ON WED
WITH THE GFS SHOWING SOME VERY LIGHT QPF BEHIND THE FROPA. THE
ECMWF IS FURTHER TO THE NORTHEAST WITH THIS SHORTWAVE AND ENTIRELY
DRY FOR THE CWA. HAVE SLIGHT CHANCE POPS IN THE FCST FOR WED AFTN.
THE WARMUP STARTS ON THURS AND CONTINUES THROUGH SAT AS LLVL
WESTERLY FLOW DEVELOPS ALONG WITH INCREASING THICKNESSES. 700MB
TEMPS ARE ON THE UPTICK...FROM 1C ON THURS TO 2C ON FRI AND 4C BY
SAT. RH PROGS DO NOT SHOW MUCH CLOUD COVER THROUGH THE PERIOD OF
THURS-SAT...SO THIS SHOULD HELP WITH THE WARMING ALSO. WIDESPREAD
60S OVER THE PLAINS...AND MAYBE EVEN A 70 DEGREE READING IN CHEYENNE
COULD BE POSSIBLE BY SAT. PRECIP CHANCES LOOK REAL SLIM AFTER
MIDWEEK.
&&
.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z MONDAY AFTERNOON)
ISSUED AT 515 PM MDT SUN APR 21 2013
BEST CHANCE OF SHOWER ACTIVITY THROUGH 06Z WILL BE ACROSS NIOBRARA
COUNTY AND INTO THE NORTHERN NEBRASKA PANHANDLE...WITH ISOLATED
TSTMS ALSO POSSIBLE. SOME OF THE HEAVIER SHOWERS COULD BRIEFLY
PRODUCE MVFR CIGS/VIS...ELSEWHERE VFR CIGS CAN BE EXPECTED
THROUGH THE EARLY NIGHT. COLD FRONTAL PASSAGE WILL BE AROUND
10-15Z ON MONDAY...WITH GUSTY NORTH-TO- NORTHEAST WINDS AND IFR
CONDITIONS IN SNOW DEVELOPING AFTER IT MOVES THROUGH.
&&
.FIRE WEATHER...
ISSUED AT 300 PM MDT SUN APR 21 2013
NO FIRE WEATHER CONCERNS THROUGH MID WEEK AS ANOTHER STORM SYSTEM
AND COLD FRONT BRING ACCUMULATING SNOWFALL...GUSTY WINDS AND COLDER
TEMPERATURES LATE TONIGHT THROUGH MONDAY NIGHT TO THE DISTRICTS.
SNOW ACCUMULATIONS WILL RANGE FROM 2 TO 6 INCHES FOR EAST CENTRAL
WYOMING AND NORTHERN NEBRASKA PANHANDLE TO 6 TO 12 INCHES FOR THE
MOUNTAINS. THE SOUTHERN PANHANDLE AND EXTREME SOUTHEAST WYOMING
CAN EXPECT 1 TO 3 INCHES. COLD TEMPERATURES WILL KEEP MINIMUM
RELATIVE HUMIDITIES HIGH THROUGH AT LEAST MID WEEK. ABUNDANT
MOISTURE FROM THIS CURRENT STORM AND PREVIOUS TWO WINTER STORMS
WILL RESULT IN GREEN UP THE END OF THIS WEEK AS TEMPERATURES CLIMB
BACK INTO THE 50S AND 60S BY FRIDAY.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY
FOR WYZ101>103.
WINTER WEATHER ADVISORY FROM 6 AM MONDAY TO MIDNIGHT MDT MONDAY
NIGHT FOR WYZ106>108-115>118.
WINTER STORM WATCH FROM MONDAY MORNING THROUGH MONDAY EVENING
FOR WYZ112-114.
NE...WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY
FOR NEZ002-095.
&&
SHORT TERM...JAMSKI
LONG TERM...FINCH
AVIATION...FINCH
FIRE WEATHER...JAMSKIHazardous weather outlook, Apr 21, 2:27 PM MDT, 7 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 227 PM MDT SUN APR 21 2013 WYZ101>119-222030- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- 227 PM MDT SUN APR 21 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING... SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS WILL BE POSSIBLE ACROSS SOUTHEAST WYOMING THIS AFTERNOON. THUNDERSTORMS THAT DEVELOP ARE NOT EXPECTED TO BECOME SEVERE. A COLD FRONT WILL ADVANCE SOUTH ACROSS THE EASTERN PLAINS OF WYOMING TONIGHT AND BE LOCATED NEAR THE COLORADO BORDER BY MONDAY MORNING. BEHIND THIS FRONT...MUCH COLDER AIR WILL CHANGE RAIN SHOWERS TO SNOW. SIGNIFICANT SNOW ACCUMULATIONS WILL OCCUR OVER CONVERSE AND NIOBRARA COUNTIES LATER TONIGHT. A WINTER WEATHER ADVISORY IS IN EFFECT FOR THESE AREAS FROM MIDNIGHT TONIGHT THROUGH MONDAY AFTERNOON. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE FRONT HAS THE POTENTIAL TO BRING HEAVY SNOW TO THE SNOWY AND SIERRA MADRE RANGES MONDAY MORNING THROUGH EARLY MONDAY MORNING. A WINTER STORM WATCH IS IN EFFECT FOR THESE AREAS WHERE 8 TO 14 INCHES OF SNOW MAY ACCUMULATE. ELSEWHERE...MOST LOCATIONS CAN EXPECT 2 TO 4 INCHES OF SNOW AS THE FRONT MOVES INTO COLORADO. DRIVING CONDITIONS WILL BE IMPACTED FOR MUCH OF THE AREA BY FALLING AND BLOWING SNOW. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 AM MONDAY THROUGH MIDNIGHT MDT MONDAY NIGHT FOR MUCH OF SOUTHEAST WYOMING...INCLUDING THE LARAMIE RANGE AND LARAMIE VALLEY. THE SNOW WILL END TUESDAY MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THIS AFTERNOON AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE NEZ002-003-019>021-054-055-095-096-222030- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 227 PM MDT SUN APR 21 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EARLY EVENING. THUNDERSTORMS THAT DEVELOP ARE NOT EXPECTED TO BECOME SEVERE. A COLD FRONT WILL ADVANCE SOUTH INTO SIOUX AND DAWES COUNTIES LATER THIS EVENING AND BE LOCATED NEAR THE COLORADO BORDER BY MONDAY MORNING. BEHIND THIS FRONT....MUCH COLDER AIR WILL CHANGE THE RAIN SHOWERS TO SNOW. SIGNIFICANT SNOW ACCUMULATIONS WILL OCCUR OVER SIOUX AND DAWES COUNTIES LATER TONIGHT. A WINTER WEATHER ADVISORY IS IN EFFECT FOR THESE AREAS FROM MIDNIGHT TONIGHT THROUGH MONDAY AFTERNOON. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE FRONT WILL BRING MOST AREAS IN THE WESTERN NEBRASKA PANHANDLE ACCUMULATING SNOW OF 2 TO 4 INCHES. THE FALLING AND BLOWING SNOW WILL MAKE TRAVEL HAZARDOUS ON MONDAY. THE SNOW WILL END TUESDAY MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THIS AFTERNOON AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE JAMSKI
In the hours before
Special weather statement, Apr 21, 5:07 PM MDT, 4 hours 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 507 PM MDT SUN APR 21 2013 NEZ021-212330- MORRILL NE- 507 PM MDT SUN APR 21 2013 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MORRILL COUNTY UNTIL 530 PM MDT... AT 505 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9 MILES SOUTHEAST OF THE INTERSECTION OF HIGHWAY 385 AND 92...OR 29 MILES NORTH OF SIDNEY...MOVING EAST AT 20 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... MAINLY RURAL AREAS OF SOUTHEASTERN MORRILL COUNTY. && LAT...LON 4145 10264 4148 10291 4164 10292 4173 10265 TIME...MOT...LOC 2307Z 277DEG 19KT 4153 10282 HAMMER/LIEBL
Special weather statement, Apr 21, 5:21 PM MDT, 4 hours 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
521 PM MDT SUN APR 21 2013
NEZ095-WYZ102-220000-
NIOBRARA COUNTY WY-NORTH SIOUX NE-
521 PM MDT SUN APR 21 2013
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SIOUX AND EASTERN
NIOBRARA COUNTIES UNTIL 600 PM MDT...
AT 516 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 17 MILES NORTHEAST OF LUSK...MOVING SOUTHEAST AT
25 MPH.
HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
MAINLY RURAL AREAS OF EASTERN NIOBRARA AND NORTHWESTERN SIOUX
COUNTIES.
&&
LAT...LON 4284 10383 4270 10382 4271 10406 4271 10441
4286 10438 4306 10433
TIME...MOT...LOC 2321Z 308DEG 21KT 4295 10423
LIEBLSpecial weather statement, Apr 21, 7:01 PM MDT, 3 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
701 PM MDT SUN APR 21 2013
NEZ002-095-096-220130-
DAWES NE-NORTH SIOUX NE-SOUTH SIOUX NE-
701 PM MDT SUN APR 21 2013
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL SIOUX AND SOUTHWESTERN
DAWES COUNTIES UNTIL 730 PM MDT...
AT 659 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 12 MILES SOUTHEAST OF HARRISON...OR 39 MILES
SOUTHWEST OF CHADRON...MOVING EAST AT 25 MPH.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
FORT ROBINSON CAMPGROUND...
FORT ROBINSON...
&&
LAT...LON 4266 10334 4243 10345 4237 10345 4248 10390
4274 10374
TIME...MOT...LOC 0101Z 292DEG 22KT 4259 10368
LIEBLSpecial weather statement, Apr 21, 7:41 PM MDT, 2 hours 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
741 PM MDT SUN APR 21 2013
NEZ002-003-095-096-220245-
BOX BUTTE NE-DAWES NE-NORTH SIOUX NE-SOUTH SIOUX NE-
741 PM MDT SUN APR 21 2013
...SIGNIFICANT WEATHER ADVISORY FOR EASTERN SIOUX...SOUTHWESTERN
DAWES AND NORTHWESTERN BOX BUTTE COUNTIES UNTIL 845 PM MDT...
AT 738 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR FLAHERTYS CORNER...OR 37 MILES NORTHWEST OF
ALLIANCE...MOVING SOUTHEAST AT 20 MPH.
HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
FLAHERTYS CORNER...
MARSLAND...
&&
LAT...LON 4245 10315 4244 10304 4219 10320 4220 10338
4235 10361 4251 10346
TIME...MOT...LOC 0141Z 298DEG 18KT 4238 10347
LIEBLLocal storm report, Apr 21, 8:01 PM MDT, 2 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
801 PM MDT SUN APR 21 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0759 PM HAIL 17 WNW HEMINGFORD 42.41N 103.38W
04/21/2013 E1.50 INCH BOX BUTTE NE TRAINED SPOTTER
&&
BCHAPMANSpecial weather statement, Apr 21, 8:27 PM MDT, 1 hour 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
827 PM MDT SUN APR 21 2013
NEZ002-003-220300-
BOX BUTTE NE-DAWES NE-
827 PM MDT SUN APR 21 2013
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN DAWES AND NORTHERN BOX
BUTTE COUNTIES UNTIL 900 PM MDT...
AT 825 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES WEST OF HEMINGFORD...OR 23 MILES
NORTHWEST OF ALLIANCE...MOVING EAST AT 25 MPH.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
BOX BUTTE CAMPGROUND...
HEMINGFORD...
BOX BUTTE DAM...
&&
LAT...LON 4250 10288 4221 10290 4223 10327 4243 10323
4250 10307
TIME...MOT...LOC 0227Z 269DEG 21KT 4234 10318
LIEBLThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 4:42 AM MDT | Winter Weather Advisory | CYS | Albany, Converse, Niobrara, Platte | 13 hr |
Nearby
Winter Storm Warnings in Wyoming, 2013Every winter storm warning in 2013
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.