Alert archive / Colorado / Winter Weather Advisories in 2011

Winter Weather Advisory 21, NWS Pueblo, CO

April 13, 2011Chaffee County, Lake County, Saguache County, Colorado

NWS Pueblo, CO issued this winter weather advisory at Apr 13, 2011, 4:14 AM MDT for Chaffee County, Lake County, Saguache County, Colorado. It took effect at Apr 13, 2011, 9:00 PM MDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Apr 13, 2011, 4:14 AM MDT (10:14 UTC)
In effect from
Apr 13, 2011, 9:00 PM MDT
Expired
Apr 14, 2011, 3:01 PM MDT
In force
18 hr
Issued by
NWS Pueblo, CO

Counties Chaffee County, CO, Lake County, CO, Saguache County, CO

The radar

The Grand Junction radar (KGJX), 173 km from the middle of the area, began a volume at 10:13 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.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 00:00Z, 10.2 hours before the alert went out and 199 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Grand Junction, CO at 00:00Z on 2011-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 00:00Z on 2011-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3939 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

671 
WWUS45 KPUB 131014
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
414 AM MDT WED APR 13 2011

COZ058-060-131615-
/O.NEW.KPUB.WW.Y.0021.110414T0300Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...CLIMAX...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
414 AM MDT WED APR 13 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO
6 PM MDT THURSDAY...

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A WINTER WEATHER
ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 9 PM THIS EVENING TO 6
PM MDT THURSDAY.

* LOCATION...THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET AND
  THE WESTERN MOSQUITO RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE
  INTO THE GREAT BASIN REGION TONIGHT AND THEN CONTINUE ACROSS THE
  STATE. THE MOVEMENT OF THIS SYSTEM WILL BRING SNOW...MODERATE TO
  HEAVY AT TIMES...TO THE AREA LATE THIS EVENING THROUGH THE DAY
  THURSDAY. AN ISOLATED THUNDERSTORM MAY ALSO BE POSSIBLE TONIGHT.

* SNOW ACCUMULATION...4 TO 9 INCHES...WITH LOCALLY HIGHER AMOUNTS
  POSSIBLE UNDER THE HEAVIEST SHOWERS. 

* WIND...SOUTH TO SOUTHWEST 15 TO 25 MPH TONIGHT BECOMING WEST TO
  NORTHWEST 20 TO 40 MPH ON THURSDAY. 

* IMPACT...THE COMBINATION OF SNOW...BLOWING SNOW AND ICY ROADS
  WILL RESULT IN HAZARDOUS TRAVEL CONDITIONS THROUGH THE MOUNTAIN
  PASSES LATER TONIGHT AND THURSDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE PLANNING TO TRAVEL IN THE ADVISORY AREA DURING THE
TIME OF THE ADVISORY...LISTEN TO THE LATEST WEATHER FORECAST AND
CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE.

&&

$$
7 follow-up statements
463 
WWUS45 KPUB 131521
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
921 AM MDT WED APR 13 2011

COZ058-060-132200-
/O.CON.KPUB.WW.Y.0021.110414T0300Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...CLIMAX...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
921 AM MDT WED APR 13 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 6 PM MDT THURSDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 6 PM MDT THURSDAY. 

* LOCATION...THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET AND 
  THE WESTERN MOSQUITO RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE
  INTO THE GREAT BASIN REGION TONIGHT AND THEN CONTINUE ACROSS THE
  STATE. THE MOVEMENT OF THIS SYSTEM WILL BRING SNOW...MODERATE
  TO HEAVY AT TIMES...TO THE AREA LATE THIS EVENING THROUGH THE
  DAY THURSDAY. AN ISOLATED THUNDERSTORM IS ALSO POSSIBLE TONIGHT.

* SNOW ACCUMULATION...4 TO 9 INCHES...WITH LOCALLY HIGHER AMOUNTS
  POSSIBLE UNDER THE HEAVIEST SHOWERS.

* WIND...SOUTH TO SOUTHWEST 15 TO 25 MPH TONIGHT BECOMING WEST 
  TO NORTHWEST 20 TO 40 MPH ON THURSDAY. 

* IMPACT...A COMBINATION OF SNOW...BLOWING SNOW...REDUCED VISIBILITIES
  AND ICY ROADS WILL RESULT IN HAZARDOUS TRAVEL CONDITIONS THROUGH
  THE MOUNTAIN PASSES LATER TONIGHT AND THURSDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE PLANNING TO TRAVEL IN THE ADVISORY AREA DURING THE
TIME OF THE ADVISORY...LISTEN TO THE LATEST WEATHER FORECAST AND
CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE.

&&

$$
409 
WWUS45 KPUB 132120
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
320 PM MDT WED APR 13 2011

COZ058-060-140330-
/O.CON.KPUB.WW.Y.0021.110414T0300Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...CLIMAX...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
320 PM MDT WED APR 13 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 6 PM MDT THURSDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 6 PM MDT THURSDAY. 

* LOCATION...THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET AND 
  THE WESTERN MOSQUITO RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE
  INTO THE GREAT BASIN REGION TONIGHT AND THEN CONTINUE ACROSS THE
  STATE. THE MOVEMENT OF THIS SYSTEM WILL BRING SNOW... MODERATE
  TO HEAVY AT TIMES...TO THE AREA THIS EVENING THROUGH THE DAY
  THURSDAY. AN ISOLATED THUNDERSTORM IS ALSO POSSIBLE TONIGHT.

* SNOW ACCUMULATION...4 TO 9 INCHES...WITH LOCALLY HIGHER 
  AMOUNTS POSSIBLE UNDER THE HEAVIEST SHOWERS. 

* WIND...SOUTH TO SOUTHWEST 15 TO 25 MPH TONIGHT BECOMING WEST 
  TO NORTHWEST 20 TO 40 MPH ON THURSDAY. 

* IMPACT...A COMBINATION OF SNOW...BLOWING SNOW...REDUCED 
  VISIBILITIES AND ICY ROADS WILL RESULT IN HAZARDOUS TRAVEL 
  CONDITIONS THROUGH THE MOUNTAIN PASSES LATER TONIGHT AND 
  THURSDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE PLANNING TO TRAVEL IN THE ADVISORY AREA DURING THE
TIME OF THE ADVISORY...LISTEN TO THE LATEST WEATHER FORECAST AND
CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE.

&&

$$
765 
WWUS45 KPUB 140251
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
851 PM MDT WED APR 13 2011

COZ058-060-141030-
/O.CON.KPUB.WW.Y.0021.110414T0300Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...CLIMAX...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
851 PM MDT WED APR 13 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
THURSDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
THURSDAY. 

* LOCATION...THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET AND 
  THE WESTERN MOSQUITO RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG UPPER LEVEL STORM SYSTEM WILL BE
  OVER THE GREAT BASIN REGION TONIGHT AND THEN CONTINUE TO MOVE
  INTO COLORADO THURSDAY MORNING. THE MOVEMENT OF THIS SYSTEM WILL
  BRING SNOW... MODERATE TO HEAVY AT TIMES...TO THE AREA THROUGH
  THE DAY THURSDAY.

* SNOW ACCUMULATION...4 TO 9 INCHES...WITH LOCALLY HIGHER 
  AMOUNTS POSSIBLE UNDER THE HEAVIEST SHOWERS. 

* WIND...SOUTH TO SOUTHWEST 15 TO 25 MPH TONIGHT BECOMING WEST 
  TO NORTHWEST 20 TO 40 MPH ON THURSDAY. 

* IMPACT...A COMBINATION OF SNOW...BLOWING SNOW...REDUCED 
  VISIBILITIES AND ICY ROADS WILL RESULT IN HAZARDOUS TRAVEL 
  CONDITIONS THROUGH THE MOUNTAIN PASSES LATER TONIGHT AND 
  THURSDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE PLANNING TO TRAVEL IN THE ADVISORY AREA DURING THE
TIME OF THE ADVISORY...LISTEN TO THE LATEST WEATHER FORECAST AND
CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE.

&&

$$
895 
WWUS45 KPUB 140933
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
333 AM MDT THU APR 14 2011

COZ058-060-141630-
/O.CON.KPUB.WW.Y.0021.000000T0000Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...CLIMAX...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
333 AM MDT THU APR 14 2011

...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. 

* LOCATION...THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET AND 
  THE WESTERN MOSQUITO RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE
  INTO COLORADO THIS MORNING. THE MOVEMENT OF THIS SYSTEM WILL
  BRING SNOW...MODERATE TO HEAVY AT TIMES...TO THE AREA THROUGH
  THE DAY TODAY.

* SNOW ACCUMULATION...4 TO 9 INCHES...WITH LOCALLY HIGHER 
  AMOUNTS POSSIBLE UNDER THE HEAVIEST SHOWERS. 

* WIND...SOUTH TO SOUTHWEST 15 TO 25 MPH THIS MORNING BECOMING WEST 
  TO NORTHWEST 20 TO 40 MPH BY THIS AFTERNOON. 

* IMPACT...A COMBINATION OF SNOW...BLOWING SNOW...REDUCED 
  VISIBILITIES AND ICY ROADS WILL RESULT IN HAZARDOUS TRAVEL 
  CONDITIONS THROUGH THE MOUNTAIN PASSES TODAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE PLANNING TO TRAVEL IN THE ADVISORY AREA DURING THE
TIME OF THE ADVISORY...LISTEN TO THE LATEST WEATHER FORECAST AND
CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE.

&&

$$
089 
WWUS45 KPUB 141621
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
1021 AM MDT THU APR 14 2011

COZ058-060-142230-
/O.CON.KPUB.WW.Y.0021.000000T0000Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...CLIMAX...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
1021 AM MDT THU APR 14 2011

...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. 

* LOCATION...THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET AND 
  THE WESTERN MOSQUITO RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE 
  INTO COLORADO THIS MORNING. THE MOVEMENT OF THIS SYSTEM WILL 
  BRING SNOW...MODERATE TO HEAVY AT TIMES...TO THE AREA THROUGH 
  THE DAY TODAY. 

* SNOW ACCUMULATION...4 TO 9 INCHES...WITH LOCALLY HIGHER 
  AMOUNTS POSSIBLE UNDER THE HEAVIEST SHOWERS. 

* WIND...SOUTH TO SOUTHWEST 15 TO 25 MPH THIS MORNING BECOMING 
  WEST TO NORTHWEST 20 TO 40 MPH BY THIS AFTERNOON. 

* IMPACT...A COMBINATION OF SNOW...BLOWING SNOW...REDUCED 
  VISIBILITIES AND ICY ROADS WILL RESULT IN HAZARDOUS TRAVEL 
  CONDITIONS THROUGH THE MOUNTAIN PASSES TODAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE PLANNING TO TRAVEL IN THE ADVISORY AREA DURING THE
TIME OF THE ADVISORY...LISTEN TO THE LATEST WEATHER FORECAST AND
CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE.

&&

$$
107 
WWUS45 KPUB 141844
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
1244 PM MDT THU APR 14 2011

COZ058-060-150000-
/O.CON.KPUB.WW.Y.0021.000000T0000Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...CLIMAX...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
1244 PM MDT THU APR 14 2011

...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. 

* LOCATION...THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET AND 
  THE WESTERN MOSQUITO RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE 
  INTO COLORADO THIS MORNING. THE MOVEMENT OF THIS SYSTEM WILL 
  BRING SNOW...MODERATE TO HEAVY AT TIMES...TO THE AREA THROUGH 
  THE DAY TODAY. 

* SNOW ACCUMULATION...4 TO 9 INCHES...WITH LOCALLY HIGHER 
  AMOUNTS POSSIBLE UNDER THE HEAVIEST SHOWERS. 

* WIND...SOUTH TO SOUTHWEST 15 TO 25 MPH THIS MORNING BECOMING 
  WEST TO NORTHWEST 20 TO 40 MPH BY THIS AFTERNOON. 

* IMPACT...A COMBINATION OF SNOW...BLOWING SNOW...REDUCED 
  VISIBILITIES AND ICY ROADS WILL RESULT IN HAZARDOUS TRAVEL 
  CONDITIONS THROUGH THE MOUNTAIN PASSES TODAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE PLANNING TO TRAVEL IN THE ADVISORY AREA DURING THE
TIME OF THE ADVISORY...LISTEN TO THE LATEST WEATHER FORECAST AND
CONSIDER TRAVELING AT ANOTHER TIME OR BY ANOTHER ROUTE.

&&

$$
474 
WWUS45 KPUB 142101
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
301 PM MDT THU APR 14 2011

COZ058-060-142215-
/O.CAN.KPUB.WW.Y.0021.000000T0000Z-110415T0000Z/
WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT-
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
301 PM MDT THU APR 14 2011

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS CANCELLED THE WINTER
WEATHER ADVISORY THAT WAS IN EFFECT FOR THE WESTERN MOSQUITO
RANGE AND THE EASTERN SAWATCH MOUNTAINS ABOVE 11000 FEET.

HEAVY SNOW IS NO LONGER EXPECTED OVER THE AREA. SNOW SHOWERS ARE
EXPECTED TO CONTINUE INTO THE EVENING HOURS. HOWEVER...ANY
ADDITIONAL ACCUMULATIONS ARE EXPECTED TO BE LESS THAN 2 INCHES.

$$

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 3:26 PM MDTHigh Wind WatchPUBBaca, Bent, Crowley, El Paso, Huerfano, Kiowa and 4 more24 hr
Apr 13, 3:49 PM MDTFire Weather WatchPUBBaca, Bent, Crowley, Kiowa, Las Animas, Otero and 1 more23 hr

Nearby

Winter Weather Advisories in Colorado, 2011Every winter weather advisory in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.