and near Colorado Springs (El Paso County).
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PUB wrote it up.
Three to 4 inches of snow was noted near Cuchara and Walsenburg (Huerfano County)...Rye (Pueblo County)...and near Colorado Springs (El Paso County).
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pueblo, CO wrote its last area forecast discussion before the first event at Jan 31, 10:45 AM MST, 3 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PUEBLO CO 1045 AM MST MON JAN 31 2011 .UPDATE... FORECAST UPDATED TO ACCOUNT FOR CURRENT TEMPERATURE TRENDS (AND THE TREND IS DOWNWARD...). ALSO ISSUED A WIND CHILL WARNING FOR TONIGHT THROUGH TOMORROW EVENING. BEST CHANCE OF SNOW ON THE PLAINS WILL BE TONIGHT. \/HODANISH && .PREV DISCUSSION... /ISSUED 511 AM MST MON JAN 31 2011/ SHORT TERM... (TODAY AND TONIGHT) ..ARCTIC AIR TO INVADE THE REGION WITH WIDESPREAD LIGHT SNOW AND DANGEROUS WIND CHILLS LIKELY... CURRENT WATER VAPOR IMAGERY AND RUC UPPER AIR ANALYSIS INDICATING FAIRLY WEAK SOUTHWEST FLOW ALOFT ACROSS THE STATE AS A WEAKENING UPPER LOW ACROSS THE SOUTHERN GREAT BASIN CONTINUES TO DIG INTO THE DESERT SW AT THIS TIME. WATER VAPOR IMAGERY ALSO INDICATING A STRONGER UPPER TROUGH DIVING OUT OF SOUTHERN SASKATCHEWAN AND OUT ACROSS NORTHERN MONTANA AT THIS TIME. LATEST MSAS DATA INDICATING PRESSURE FALLS ACROSS NORTHEASTERN NEW MEXICO WITH SFC HIGHS PRESSURE ACROSS THE HIGH PLAINS KEEPING WEAK EASTERLY UPSLOPE FLOW IN PLACE ACROSS THE EASTERN PLAINS WITH LOW CLOUDS AND AREAS OF FOG SPREADING FROM NORTHEAST TO SOUTHWEST ACROSS EASTERN COLORADO AT THIS TIME. MSAS DATA AND SFC OBSERVATIONS INDICATING SFC PRESSURE RISES ASSOCIATED WITH ARCTIC FRONTAL BOUNDARY ACROSS SOUTHERN WYOMING AND WESTERN NEBRASKA WITH TEMPS IN THE TEENS AND 20S SOUTH OF THE BOUNDARY AND IN THE SINGLE DIGITS NORTH AT THIS TIME. TODAY AND TONIGHT...ONLY SLIGHT CHANGES TO CURRENT FORECAST WITH WELL ADVERTISED ARCTIC FRONT CONTINUING TO DIVE ACROSS THE EASTERN PLAINS THROUGH THE MORNING AND HITTING THE PALMER DIVIDE BETWEEN 16-18Z. FRONT CONTINUES TO DIVE ACROSS THE ALL OF THE SOUTHEAST COLORADO THROUGH EARLY AFTERNOON. SOUNDINGS CONTINUE TO INDICATE WELL SATURATED ATMOSPHERE BEHIND FRONT AND WITH SFC-H7 NORTH TO NORTHEAST WINDS OF 15-25 KTS SHOULD SEE SNOW DEVELOPING ACROSS THE EASTERN MTS AND IMMEDIATE ADJACENT PLAINS WITH FRONTAL PASSAGE. WITH H7 TEMPS OF -10C TO -20C IN THE SATURATED COLUMN...SNOW WELL BE LIGHT AND FLUFFY WITH SEVERAL INCHES OF ACCUMS POSSIBLE THROUGH THE AFTERNOON. WITH SW FLOW ALOFT...MODELS SOUNDINGS INDICATING POTENTIAL FOR LIGHT FREEZING DRIZZLE ACROSS THE FAR SE PLAINS THROUGH THE LATE MORNING WITH STRONG CAA BEHIND FRONT ALLOWING FOR ALL SNOW TO DEVELOP THEREAFTER. LATEST MODELS AT TAD FURTHER NORTH LIFTING OUT DESERT SW WEAKENING UPPER LOW AND WITH BETTER SYNOPTIC LIFT HAVE INCREASED POPS ACROSS THE SAN LUIS VALLEY THROUGH THE FAR SE PLAINS TONIGHT WITH BEST TIMEFRAME OF LIGHT TO MODERATE SNOWFALL FROM 00Z THROUGH 06Z. CURRENT GRIDS HAVE 5 TO 10 INCHES ACROSS THE CENTRAL AND SW MTS WITH 2 TO 5 INCHES ACROSS THE UPPER ARKANSAS RIVER VALLEY AND THE SAN LUIS VALLEY. SNOW TOTALS THROUGH TONIGHT OF 5 TO 10 INCHES WILL ALSO BE POSSIBLE ACROSS THE EASTERN MTS WITH 3 TO 6 INCHES ACROSS THE EASTERN PLAINS. WITH THAT SAID...WILL KEEP CURRENT ADVISORIES IN PLACE WITH LATER SHIFTS POSSIBLY NEEDING TO ADD PORTIONS OF THE SAN LUIS VALLEY IF CURRENT MODELS ARE CORRECT. STRONG COLD ADVECTION CONTINUES ACROSS THE AREA THROUGH TONIGHT WITH LOWS AROUND ZERO TO -15F BY EARLY TUESDAY MORNING. THESE COLD AMBIENT TEMPERATURES...WHEN COMBINED WITH GUSTY NORTH TO NORTHEAST OF 15 TO 25 MPH...WILL PRODUCE DANGEROUS WIND CHILLS OF -20F TO -30F ACROSS THE AREA EARLY TUESDAY MORNING. WITH THE CURRENT ADVISORIES IN PLACE...WILL CONTINUE TO HIGHLIGHT THE DANGEROUS WINDS IN THE CURRENT HIGHLIGHTS. -MW LONG TERM... (TUESDAY THROUGH SUNDAY) ..ARCTIC COLD TO LINGER THROUGH AT LEAST WEDNESDAY... FIRST PIECE OF THE UPPER TROUGH WILL BE LIFTING EAST INTO THE SOUTHERN PLAINS TUESDAY MORNING...WHILE NORTHERN PORTION OF THE TROUGH DROPS SOUTH ACROSS COLORADO DURING THE DAY. SHOULD BE ENOUGH DYNAMIC LIFT PLUS UPSLOPE FLOW TO KEEP PRECIP GOING OVER MOST OF THE MOUNTAINS AND VALLEYS THROUGH THE DAY TUE...WITH LIGHTER SNOWS/FLURRIES OVER THE PLAINS. BEST AREA FOR HEAVIER ACCUMULATING SNOW WILL BE OVER THE SOUTHWEST MOUNTAINS THROUGH TUE EVENING. WITH WIDESPREAD CLOUDINESS AND CONTINUED COLD ADVECTION...MAX TEMPS TUES WILL GO NOWHERE FAST...WITH HIGHER MOUNTAINS AND AREAS NORTH OF THE ARKANSAS RIVER STRUGGLING TO REACH ZERO DURING THE DAY. IN FACT...MOST NUMERICAL GUIDANCE SUGGESTS HIGHS WILL BE EARLY IN THE DAY...WITH TEMPERATURES FALLING BELOW ZERO MANY AREAS DURING THE AFTERNOON. NORTH WINDS WILL REMAIN BRISK ALONG AND EAST OF I-25...WITH SPEEDS IN THE 15 TO 25 MPH RANGE PRODUCING AREAS OF BLOWING SNOW AND BITTERLY COLD WIND CHILLS. WILL LIKELY NEED TO EXTEND OR REPLACE THE CURRENT WINTER WEATHER ADVISORY WHICH EXPIRES TUE AT 18Z...THOUGH WILL WAIT TO SEE WHERE/HOW MUCH SNOW FALLS TODAY/TONIGHT. DIDN'T GO AS COLD AS GUIDANCE NUMBERS TUE NIGHT/WED MORNING...AS WEAK UPSLOPE IS FORECAST TO CONTINUE...KEEPING CLOUDS AND FLURRIES IN PLACE MOST LOCATIONS. IF SKIES CLEAR...CURRENT FORECAST LOWS WILL NEED TO FALL ANOTHER 10F...WHICH WOULD DROP MANY LOCATIONS INTO THE MINUS 15F-MINUS 25F RANGE. ON WED...UPPER LOW WALLOWS IN PLACE OVER COLORADO...WHICH MAY KEEP SOME LIGHT SNOW/FLURRIES GOING...ESPECIALLY OVER THE MOUNTAINS. COLDEST AIR AT 700 MB DROPS SOUTH OF THE REGION BY WED EVENING...WITH WEAK NORTHERLY WARM ADVECTION DEVELOPING. ANY WARMING AT THE SURFACE WILL BE LIMITED WED AFTERNOON...WITH MAX TEMPS ONLY IN THE SINGLE DIGITS AND TEENS MOST LOCATIONS...WITH HIGHER MOUNTAINS REMAINING BELOW ZERO. LOWERED TEMPERATURES SEVERAL DEGREES MANY AREAS FOR WED TO COME MORE IN LINE WITH COLD GUIDANCE NUMBERS. BITTERLY COLD AGAIN THU MORNING...WITH MODEST WARMING ALOFT THU AFTERNOON BOOSTING TEMPS INTO THE 30S OVER THE EASTERN MOUNTAINS AND ADJACENT PLAINS. MODELS TRY TO GENERATE SOME LIGHT PRECIP THU NIGHT AS WEAK WAVE DROPS SOUTH OVER THE AREA...BUT HAVEN'T JUMPED ON THIS FEATURE YET AND WILL MAINTAIN THE DRY FORECAST FOR NOW. FRI/SAT STILL APPEAR DRY AND WARMER...WITH NEXT WAVE FORECAST TO BRING SNOW AND COLD BACK TO THE AREA SUN. MADE NO CHANGES TO THE GRIDS BEYOND THU. --10 AVIATION...LOOK FOR IFR STRATUS TO CONTINUE TO MOVE ACROSS THE EASTERN PLAINS THROUGH THE EARLY MORNING WITH AREAS FZFG PRODUCING LIFR CONDITIONS...ESPECIALLY AT COS. AN ARCTIC AIR MASS WILL MOVE FOR NORTH TO SOUTH ACROSS THE EASTERN PLAINS THROUGH THE LATE MORNING AND AFTERNOON WITH LIGHT SNOW AND GUSTY NORTHERLY WINDS OF 15-30KTS EXPECTED AFTER FROPA. THE GUSTY NORTH WINDS COULD HELP RAISE THE LOW CIGS AT COS AND PUB THROUGH THE EARLY AFTERNOON...WITH IFR CONDITIONS EXPECTED THEREAFTER IN SNOW AND BLOWING SNOW. VFR CONDITIONS AT ALS THROUGH THE EARLY AFTERNOON WITH IFR CONDITIONS EXPECTED THEREAFTER WITH PERIODS OF -SN AND FZFG. -MW && .PUB WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY UNTIL 11 AM MST TUESDAY FOR COZ058>060- 066-068-072>089-093>099. WIND CHILL WARNING FROM 6 PM THIS EVENING TO 11 PM MST TUESDAY FOR COZ084>089-093>099. && 34/34
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PUEBLO CO 645 AM MST MON JAN 31 2011 COZ058>089-093>099-011345- WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT- LEADVILLE VICINITY/LAKE COUNTY BELOW 11000 FT- EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT- WESTERN CHAFFEE COUNTY BETWEEN 9000 AND 11000 FT- CENTRAL CHAFFEE COUNTY BELOW 9000 FT- WESTERN MOSQUITO RANGE/EAST CHAFFEE COUNTY ABOVE 9000 FT- SAGUACHE COUNTY WEST OF CONTINENTAL DIVIDE BELOW 10000 FT- SAGUACHE COUNTY EAST OF CONTINENTAL DIVIDE BELOW 10000 FT- LA GARITA MOUNTAINS ABOVE 10000 FT- UPPER RIO GRANDE VALLEY/EASTERN SAN JUAN MOUNTAINS BELOW 10000 FT- EASTERN SAN JUAN MOUNTAINS ABOVE 10000 FT- DEL NORTE VICINITY/NORTHERN SAN LUIS VALLEY BELOW 8500 FT- ALAMOSA VICINITY/CENTRAL SAN LUIS VALLEY BELOW 8500 FT- SOUTHERN SAN LUIS VALLEY- NORTHERN SANGRE DE CRISTO MOUNTAINS BETWEEN 8500 AND 11000 FT- NORTHERN SANGRE DE CRISTO MOUNTAINS ABOVE 11000 FEET- SOUTHERN SANGRE DE CRISTO MOUNTAINS BETWEEN 7500 AND 11000 FT- SOUTHERN SANGRE DE CRISTO MOUNTAINS ABOVE 11000 FT- NORTHWESTERN FREMONT COUNTY ABOVE 8500 FT- WESTERN/CENTRAL FREMONT COUNTY BELOW 8500 FT- WET MOUNTAIN VALLEY BELOW 8500 FEET- WET MOUNTAINS BETWEEN 6300 AND 10000 FT- WET MOUNTAINS ABOVE 10000 FT- TELLER COUNTY/RAMPART RANGE ABOVE 7500 FT/PIKES PEAK BETWEEN 7500 AND 11000 FT-PIKES PEAK ABOVE 11000 FT- CANON CITY VICINITY/EASTERN FREMONT COUNTY- NORTHERN EL PASO COUNTY/MONUMENT RIDGE/RAMPART RANGE BELOW 7500 FT- COLORADO SPRINGS VICINITY/SOUTHERN EL PASO COUNTY/RAMPART RANGE BELOW 7400 FT-PUEBLO AND VICINITY/PUEBLO COUNTY BELOW 6300 FT- WALSENBURG VICINITY/UPPER HUERFANO RIVER BASIN BELOW 7500 FT- TRINIDAD VICINITY/WESTERN LAS ANIMAS COUNTY BELOW 7500 FT- CROWLEY COUNTY-LA JUNTA VICINITY/OTERO COUNTY- EASTERN LAS ANIMAS COUNTY-WESTERN KIOWA COUNTY- EASTERN KIOWA COUNTY-LAS ANIMAS VICINITY/BENT COUNTY- LAMAR VICINITY/PROWERS COUNTY-SPRINGFIELD VICINITY/BACA COUNTY- 645 AM MST MON JAN 31 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL...EAST CENTRAL...SOUTH CENTRAL AND SOUTHEAST COLORADO. .DAY ONE...TODAY AND TONIGHT A WIDESPREAD LIGHT TO MODERATE SNOW EVENT...ALONG WITH BITTER COLD TEMPERATURES...WILL SPREAD INTO SOUTH CENTRAL AND SOUTHEAST COLORADO TODAY AND CONTINUE THROUGH THE DAY TUESDAY. AREAS OF FOG WILL START THE DAY ACROSS THE EASTERN PLAINS...WITH SOME AREAS OF FREEZING DRIZZLE POSSIBLE THROUGH MID TO LATE MORNING ACROSS THE SOUTHEAST PLAINS...MAINLY EAST OF LA JUNTA. WHILE LIGHT TO MODERATE SNOW FALLS THIS MORNING ACROSS THE MOUNTAINS...THE ARCTIC COLD FRONT WILL RACE SOUTHWARD ACROSS THE PLAINS DURING THE LATE MORNING AND EARLY AFTERNOON...SPREADING LIGHT TO OCCASIONALLY MODERATE SNOWFALL ACROSS THE REGION THROUGH THE EVENING. PERIODS OF LIGHT SNOW WILL THEN CONTINUE INTO TUESDAY AS ANOTHER STORM SYSTEM DROPS IN FROM THE NORTHWEST INTERACTING WITH THE COLD ARCTIC AIR ALREADY IN PLACE. SNOWFALL AMOUNTS THROUGH TUESDAY MORNING WILL RANGE FROM 6 TO 10 INCHES ACROSS THE CENTRAL AND SOUTHEAST MOUNTAINS...4 TO 8 INCHES ACROSS THE EASTERN SAN JUAN AND LA GARITA MOUNTAINS...3 TO 7 INCHES ALONG THE INTERSTATE 25 CORRIDOR AND ADJACENT PLAINS...AND 2 TO 5 INCHES ACROSS THE SOUTHEAST PLAINS. THE SAN LUIS VALLEY AND UPPER ARKANSAS RIVER VALLEY IN CENTRAL CHAFFEE COUNTY WILL SEE SNOWFALL TOTALS OF 2 TO 5 INCHES AS WELL. GUSTY NORTH WINDS WILL FOLLOW THE FRONT...PRODUCING AREAS OF POOR VISIBILITIES IN BLOWING AND DRIFTING SNOW LATE THIS AFTERNOON THROUGH TUESDAY. SIGNIFICANTLY COLDER TEMPERATURES WILL ALSO ACCOMPANY THIS SYSTEM...WITH TEMPERATURES TOPPING OUT IN THE 20S TO LOWER 30S EARLY THIS MORNING...BEFORE PLUMMETING TO AROUND ZERO TO 15 BELOW BY EARLY TUESDAY MORNING. THESE VERY COLD AMBIENT TEMPERATURES...COMBINED WITH THE WINDS...WILL PRODUCE DANGEROUS WIND CHILLS OF 20 TO 30 BELOW ZERO LATER TONIGHT AND TUESDAY. RESIDENTS AND THOSE PLANNING TRAVEL ACROSS COLORADO TODAY AND TOMORROW SHOULD BE PREPARED FOR THE DRASTICALLY COLDER TEMPERATURES AND EXPECT TO ENCOUNTER WINTER DRIVING CONDITIONS. KEEP WINTER COATS AND GLOVES HANDY. TEMPERATURES WILL FALL QUICKLY BEHIND THE ARCTIC COLD FRONT THIS MORNING...AND ANY SNOWFALL WHICH GETS PACKED ON ROAD SURFACES MAY CAUSE SLICK AND HAZARDOUS DRIVING CONDITIONS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY OCCASIONAL LIGHT SNOW WILL CONTINUE TUESDAY INTO EARLY WEDNESDAY...WITH ADDITIONAL ACCUMULATIONS OF 1 TO 3 INCHES OVER THE MOUNTAINS...WHILE LOWER ELEVATIONS WILL SEE AN INCH OR LESS. VERY COLD WEATHER WILL CONTINUE THROUGH WEDNESDAY MORNING...WITH LOW WIND CHILLS...IN THE MINUS 20 TO MINUS 30 RANGE...POSSIBLE THROUGH MID-MORNING WEDNESDAY. THE COLD AIR WILL LINGER WEDNESDAY INTO THURSDAY MORNING...WITH HIGHS ONLY IN THE SINGLE DIGITS WEDNESDAY...WHILE LOWS THURSDAY MORNING MAY FALL WELL BELOW ZERO AT MANY LOCATIONS. WARMER AIR WILL SPREAD BACK OVER THE REGION FRIDAY INTO SATURDAY...WITH ANOTHER SURGE OF COLD AIR AND A CHANCE OF SNOW RETURNING TO ALL OF SOUTHERN COLORADO ON SUNDAY. .SPOTTER INFORMATION STATEMENT... WEATHER CONDITIONS THAT MEET REPORTING CRITERIA FOR SPOTTERS WILL BE LIKELY ACROSS ALL OF SOUTH CENTRAL AND SOUTHEAST COLORADO TODAY AND TONIGHT. 23/10
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 855 AM MST MON JAN 31 2011 COZ084>086-089-093>099-311800- NORTHERN EL PASO COUNTY/MONUMENT RIDGE/RAMPART RANGE BELOW 7500 FT- COLORADO SPRINGS VICINITY/SOUTHERN EL PASO COUNTY/RAMPART RANGE BELOW 7400 FT-PUEBLO AND VICINITY/PUEBLO COUNTY BELOW 6300 FT- CROWLEY COUNTY-LA JUNTA VICINITY/OTERO COUNTY- EASTERN LAS ANIMAS COUNTY-WESTERN KIOWA COUNTY- EASTERN KIOWA COUNTY-LAS ANIMAS VICINITY/BENT COUNTY- LAMAR VICINITY/PROWERS COUNTY-SPRINGFIELD VICINITY/BACA COUNTY- INCLUDING THE CITIES OF...BLACK FOREST...AIR FORCE ACADEMY... COLORADO SPRINGS...PUEBLO...ORDWAY...OLNEY SPRINGS...LA JUNTA... ROCKY FORD...BRANSON...KIM...EADS...SHERIDAN LAKE...LAS ANIMAS... LAMAR...SPRINGFIELD...WALSH 855 AM MST MON JAN 31 2011 AREAS OF FREEZING DRIZZLE WILL OCCUR OVER THE PLAINS THIS MORNING BEFORE THE PRECIPITATION CHANGES OVER TO SNOW LATE THIS MORNING AND AFTERNOON. ROADWAYS...ESPECIALLY OVERPASSES...WILL LIKELY BECOME ICY. TEMPERATURES IN THE 20S THIS MORNING WILL GRADUALLY DROP INTO THE TEENS BY AFTERNOON. WINDS WILL BECOME NORTHEAST AT 10 TO 15 MPH. PLEASE DRIVE WITH CAUTION IF YOU WILL BE OUT TODAY. PLEASE DRESS APPROPRIATELY FOR THE VERY COLD TEMPERATURES. HODANISH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 1234 PM MST MON JAN 31 2011 COZ084>089-093>099-312145- NORTHERN EL PASO COUNTY/MONUMENT RIDGE/RAMPART RANGE BELOW 7500 FT- COLORADO SPRINGS VICINITY/SOUTHERN EL PASO COUNTY/RAMPART RANGE BELOW 7400 FT-PUEBLO AND VICINITY/PUEBLO COUNTY BELOW 6300 FT- WALSENBURG VICINITY/UPPER HUERFANO RIVER BASIN BELOW 7500 FT- TRINIDAD VICINITY/WESTERN LAS ANIMAS COUNTY BELOW 7500 FT- CROWLEY COUNTY-LA JUNTA VICINITY/OTERO COUNTY- EASTERN LAS ANIMAS COUNTY-WESTERN KIOWA COUNTY- EASTERN KIOWA COUNTY-LAS ANIMAS VICINITY/BENT COUNTY- LAMAR VICINITY/PROWERS COUNTY-SPRINGFIELD VICINITY/BACA COUNTY- INCLUDING THE CITIES OF...BLACK FOREST...AIR FORCE ACADEMY... COLORADO SPRINGS...PUEBLO...WALSENBURG...TRINIDAD...ORDWAY... OLNEY SPRINGS...LA JUNTA...ROCKY FORD...BRANSON...KIM...EADS... SHERIDAN LAKE...LAS ANIMAS...LAMAR...SPRINGFIELD...WALSH 1231 PM MST MON JAN 31 2011 ...ARCTIC AIR CONTINUES TO DROP SOUTHWARD ACROSS THE SOUTHEAST PLAINS OF COLORADO... AT 1230 PM THIS AFTERNOON...TEMPERATURES ACROSS NORTHEAST COLORADO WERE IN THE SINGLE DIGITS WHILE TEMPERATURES ACROSS SOUTHEAST COLORADO WERE IN THE LOWER 20S. AS THE AFTERNOON PROGRESSES...THE COLD AIR ACROSS NORTHEAST COLORADO WILL DROP SOUTH...WITH TEMPERATURES FALLING INTO THE TEENS BY EARLY TO MID AFTERNOON. LIGHT SNOW WILL CONTINUE TO FALL ACROSS MOST OF THE REGION. WINDS WILL BE FROM THE NORTHEAST AT 10 TO 20 MPH. IF YOU WILL BE OUTSIDE TODAY...PLEASE DRESS ACCORDINGLY. ROADWAYS WILL BEGIN TO GET SLICK IN SPOTS.
The national radar mosaic for the moment the first event began.
4 winter weather. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2011Every state in 2011This day in weather historyWarnings in Colorado, January 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 276248, 276251, 276252, 276249.