Alert archive / Colorado / Winter Storm Watches in 2012

Winter Storm Watch 13, NWS Pueblo, CO

October 11, 20126 counties in Colorado

NWS Pueblo, CO issued this winter storm watch at Oct 11, 2012, 4:09 AM MDT for 6 counties in Colorado. It took effect at Oct 12, 2012, 6:00 AM MDT. It was in force for .

The area

The counties it named.

The facts

Issued
Oct 11, 2012, 4:09 AM MDT (10:09 UTC)
In effect from
Oct 12, 2012, 6:00 AM MDT
Expired
Oct 11, 2012, 2:54 PM MDT
In force
Issued by
NWS Pueblo, CO

Counties Chaffee County, CO, Conejos County, CO, Lake County, CO, Mineral County, CO, Rio Grande County, CO, Saguache County, CO

The radar

The Grand Junction radar (KGJX), 193 km from the middle of the area, began a volume at 10:06 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 218 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 2012-10-11Temperature 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 2012-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
3278 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
88 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.

655 
WWUS45 KPUB 111009
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
409 AM MDT THU OCT 11 2012

COZ060-111615-
/O.NEW.KPUB.WS.A.0013.121012T1200Z-121013T1200Z/
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
409 AM MDT THU OCT 11 2012

...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH LATE
FRIDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH LATE
FRIDAY NIGHT. 


* LOCATION...THE EASTERN SAWATCH RANGE ABOVE 11000 FEET. 

* CAUSE AND TIMING...A STRONG STORM SYSTEM WILL SPREAD SNOW ACROSS
  THE REGION FRIDAY AND FRIDAY NIGHT...WITH SNOW POSSIBLY BECOMING
  HEAVY AT TIMES FRIDAY AFTERNOON AND EVENING. INITIALLY SNOW
  LEVELS WILL START OUT AROUND 12000 FEET FRIDAY MORNING BEFORE
  DROPPING TO DOWN TO THE PASS LEVEL BY AFTERNOON. 

* SNOW ACCUMULATION...SIGNIFICANT ACCUMULATIONS WILL BE POSSIBLE
  WITH AMOUNTS GENERALLY RANGING FROM 4 TO 8 INCHES. 

* WIND...SOUTHWEST TO WEST AT 15 TO 30 MPH...WITH GUSTS TO AROUND
  45 MPH ACROSS THE HIGHER PEAKS.  

* IMPACT...SLUSHY AND SNOW PACKED ROADS WILL BE POSSIBLE OVER THE
  MOUNTAIN PASSES...ESPECIALLY FRIDAY AFTERNOON THROUGH FRIDAY
  NIGHT. HUNTERS AND OUTDOOR ENTHUSIASTS SHOULD BE PREPARED FOR
  ABRUPT WINTER LIKE CONDITIONS TO MOVE INTO THE AREA ON FRIDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH IS ISSUED WHEN THERE IS THE POTENTIAL FOR
SEVERE WINTER WEATHER CONDITIONS TO DEVELOP.

WINTER STORMS MAY HAVE STRONG WINDS AND REDUCED VISIBILITY DUE TO
HEAVY SNOWFALL AND BLOWING SNOW. SNOW ACCUMULATIONS OF OVER
6 INCHES ACROSS THE PLAINS AND HIGH VALLEYS OR OVER 8 INCHES IN
THE MOUNTAINS MAY OCCUR. IF YOU ARE PLANNING TO TRAVEL IN THE
WATCH AREA DURING THE TIME OF THE WATCH...LISTEN TO THE LATEST
WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY
ANOTHER ROUTE. IF YOU MUST TRAVEL IN OR THROUGH THE WATCH AREA
DURING THE TIME OF THE WATCH...TAKE ALONG A WINTER SURVIVAL KIT.

&&

$$

COZ066-068-111615-
/O.NEW.KPUB.WS.A.0013.121012T1200Z-121013T0300Z/
LA GARITA MOUNTAINS ABOVE 10000 FT-
EASTERN SAN JUAN MOUNTAINS ABOVE 10000 FT-
INCLUDING...NORTH PASS...CUMBRES PASS...WOLF CREEK PASS
409 AM MDT THU OCT 11 2012

...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING. 

* LOCATION...THE EASTERN SAN JUAN AND LA GARITA MOUNTAINS. 

* CAUSE AND TIMING...A STRONG STORM SYSTEM WILL SPREAD SNOW ACROSS
  THE REGION FRIDAY AND FRIDAY NIGHT...WITH SNOW POSSIBLY BECOMING
  HEAVY AT TIMES ON FRIDAY. INITIALLY SNOW LEVELS WILL START OUT AROUND
  12000 FEET FRIDAY MORNING BEFORE DROPPING TO DOWN TO THE PASS
  LEVEL BY AFTERNOON.

* SNOW ACCUMULATION...SIGNIFICANT ACCUMULATIONS WILL BE POSSIBLE
  WITH AMOUNTS GENERALLY RANGING FROM 4 TO 8 INCHES.

* WIND...SOUTHWEST TO WEST AT 15 TO 30 MPH...WITH GUSTS TO AROUND
  45 MPH ACROSS THE HIGHER PEAKS.

* IMPACT...SLUSHY AND SNOW PACKED ROADS WILL BE POSSIBLE OVER THE
  MOUNTAIN PASSES...ESPECIALLY FRIDAY AFTERNOON THROUGH FRIDAY
  NIGHT. HUNTERS AND OUTDOOR ENTHUSIASTS SHOULD BE PREPARED FOR ABRUPT
  WINTER LIKE CONDITIONS TO MOVE INTO THE AREA FRIDAY MORNING.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH IS ISSUED WHEN THERE IS THE POTENTIAL FOR
SEVERE WINTER WEATHER CONDITIONS TO DEVELOP.

WINTER STORMS MAY HAVE STRONG WINDS AND REDUCED VISIBILITY DUE TO
HEAVY SNOWFALL AND BLOWING SNOW. SNOW ACCUMULATIONS OF OVER
6 INCHES ACROSS THE PLAINS AND HIGH VALLEYS OR OVER 8 INCHES IN
THE MOUNTAINS MAY OCCUR. IF YOU ARE PLANNING TO TRAVEL IN THE
WATCH AREA DURING THE TIME OF THE WATCH...LISTEN TO THE LATEST
WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY
ANOTHER ROUTE. IF YOU MUST TRAVEL IN OR THROUGH THE WATCH AREA
DURING THE TIME OF THE WATCH...TAKE ALONG A WINTER SURVIVAL KIT.

&&

$$
2 follow-up statements
841 
WWUS45 KPUB 111521
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
921 AM MDT THU OCT 11 2012

COZ060-112200-
/O.CON.KPUB.WS.A.0013.121012T1200Z-121013T1200Z/
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
921 AM MDT THU OCT 11 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH LATE FRIDAY NIGHT...

A WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH LATE FRIDAY NIGHT. 

* LOCATION...THE EASTERN SAWATCH RANGE ABOVE 11000 FEET.

* CAUSE AND TIMING...A STRONG STORM SYSTEM WILL SPREAD SNOW 
  ACROSS THE REGION FRIDAY AND FRIDAY NIGHT...WITH SNOW POSSIBLY 
  BECOMING HEAVY AT TIMES FRIDAY AFTERNOON AND EVENING. 
  INITIALLY SNOW LEVELS WILL START OUT AROUND 12000 FEET FRIDAY 
  MORNING BEFORE DROPPING TO DOWN TO THE PASS LEVEL BY 
  AFTERNOON. 

* SNOW ACCUMULATION...SIGNIFICANT ACCUMULATIONS WILL BE POSSIBLE 
  WITH AMOUNTS GENERALLY RANGING FROM 4 TO 8 INCHES. 

* WIND...SOUTHWEST TO WEST AT 15 TO 30 MPH...WITH GUSTS TO 
  AROUND 45 MPH ACROSS THE HIGHER PEAKS. 

* IMPACT...SLUSHY AND SNOW PACKED ROADS WILL BE POSSIBLE OVER 
  THE MOUNTAIN PASSES...ESPECIALLY FRIDAY AFTERNOON THROUGH 
  FRIDAY NIGHT. HUNTERS AND OUTDOOR ENTHUSIASTS SHOULD BE 
  PREPARED FOR ABRUPT WINTER LIKE CONDITIONS TO MOVE INTO THE 
  AREA ON FRIDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH IS ISSUED WHEN THERE IS THE POTENTIAL FOR
SEVERE WINTER WEATHER CONDITIONS TO DEVELOP.

WINTER STORMS MAY HAVE STRONG WINDS AND REDUCED VISIBILITY DUE TO
HEAVY SNOWFALL AND BLOWING SNOW. SNOW ACCUMULATIONS OF OVER
6 INCHES ACROSS THE PLAINS AND HIGH VALLEYS OR OVER 8 INCHES IN
THE MOUNTAINS MAY OCCUR. IF YOU ARE PLANNING TO TRAVEL IN THE
WATCH AREA DURING THE TIME OF THE WATCH...LISTEN TO THE LATEST
WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY
ANOTHER ROUTE. IF YOU MUST TRAVEL IN OR THROUGH THE WATCH AREA
DURING THE TIME OF THE WATCH...TAKE ALONG A WINTER SURVIVAL KIT.

&&

$$

COZ066-068-112200-
/O.CON.KPUB.WS.A.0013.121012T1200Z-121013T0300Z/
LA GARITA MOUNTAINS ABOVE 10000 FT-
EASTERN SAN JUAN MOUNTAINS ABOVE 10000 FT-
INCLUDING...NORTH PASS...CUMBRES PASS...WOLF CREEK PASS
921 AM MDT THU OCT 11 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING. 

* LOCATION...THE EASTERN SAN JUAN AND LA GARITA MOUNTAINS.

* CAUSE AND TIMING...A STRONG STORM SYSTEM WILL SPREAD SNOW 
  ACROSS THE REGION FRIDAY AND FRIDAY NIGHT...WITH SNOW POSSIBLY 
  BECOMING HEAVY AT TIMES ON FRIDAY. INITIALLY SNOW LEVELS WILL 
  START OUT AROUND 12000 FEET FRIDAY MORNING BEFORE DROPPING TO 
  DOWN TO THE PASS LEVEL BY AFTERNOON. 

* SNOW ACCUMULATION...SIGNIFICANT ACCUMULATIONS WILL BE POSSIBLE 
  WITH AMOUNTS GENERALLY RANGING FROM 4 TO 8 INCHES. 

* WIND...SOUTHWEST TO WEST AT 15 TO 30 MPH...WITH GUSTS TO 
  AROUND 45 MPH ACROSS THE HIGHER PEAKS. 

* IMPACT...SLUSHY AND SNOW PACKED ROADS WILL BE POSSIBLE OVER 
  THE MOUNTAIN PASSES...ESPECIALLY FRIDAY AFTERNOON THROUGH 
  FRIDAY NIGHT. HUNTERS AND OUTDOOR ENTHUSIASTS SHOULD BE 
  PREPARED FOR ABRUPT WINTER LIKE CONDITIONS TO MOVE INTO THE 
  AREA FRIDAY MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH IS ISSUED WHEN THERE IS THE POTENTIAL FOR
SEVERE WINTER WEATHER CONDITIONS TO DEVELOP.

WINTER STORMS MAY HAVE STRONG WINDS AND REDUCED VISIBILITY DUE TO
HEAVY SNOWFALL AND BLOWING SNOW. SNOW ACCUMULATIONS OF OVER
6 INCHES ACROSS THE PLAINS AND HIGH VALLEYS OR OVER 8 INCHES IN
THE MOUNTAINS MAY OCCUR. IF YOU ARE PLANNING TO TRAVEL IN THE
WATCH AREA DURING THE TIME OF THE WATCH...LISTEN TO THE LATEST
WEATHER FORECAST AND CONSIDER TRAVELING AT ANOTHER TIME OR BY
ANOTHER ROUTE. IF YOU MUST TRAVEL IN OR THROUGH THE WATCH AREA
DURING THE TIME OF THE WATCH...TAKE ALONG A WINTER SURVIVAL KIT.

&&

$$
520 
WWUS45 KPUB 112054
WSWPUB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PUEBLO CO
254 PM MDT THU OCT 11 2012

COZ060-120400-
/O.UPG.KPUB.WS.A.0013.121012T1200Z-121013T1200Z/
/O.NEW.KPUB.WW.Y.0023.121012T1500Z-121013T1200Z/
EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT-
INCLUDING...INDEPENDENCE PASS...MT ELBERT...MT MASSIVE
254 PM MDT THU OCT 11 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM FRIDAY TO 6 AM MDT
SATURDAY...

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 9 AM FRIDAY
TO 6 AM MDT SATURDAY. 

* LOCATION...THE EASTERN SAWATCH RANGE ABOVE 11000 FEET.

* CAUSE AND TIMING...A STRONG STORM SYSTEM WILL SPREAD SNOW 
  ACROSS THE REGION FRIDAY AND FRIDAY NIGHT...WITH SNOW POSSIBLY 
  BECOMING HEAVY AT TIMES FRIDAY AFTERNOON AND EVENING. 
  INITIALLY SNOW LEVELS WILL START OUT AROUND 12000 FEET FRIDAY 
  MORNING BEFORE DROPPING TO DOWN TO THE PASS LEVEL BY 
  AFTERNOON. 

* SNOW ACCUMULATION...GENERALLY RANGING FROM 4 TO 8 INCHES.

* WIND...SOUTHWEST 15 TO 30 MPH...WITH GUSTS TO AROUND 40 MPH
  ACROSS THE HIGHER PEAKS.

* IMPACT...SLUSHY AND SNOW PACKED ROADS WILL BE POSSIBLE OVER THE
  MOUNTAIN PASSES...ESPECIALLY FRIDAY AFTERNOON THROUGH FRIDAY
  NIGHT. HUNTERS AND OUTDOOR ENTHUSIASTS SHOULD BE PREPARED FOR
  ABRUPT WINTER LIKE CONDITIONS TO MOVE INTO THE AREA ON FRIDAY.

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.

&&

$$

COZ066-068-120400-
/O.UPG.KPUB.WS.A.0013.121012T1200Z-121013T0300Z/
/O.NEW.KPUB.WW.Y.0023.121012T1500Z-121013T0300Z/
LA GARITA MOUNTAINS ABOVE 10000 FT-
EASTERN SAN JUAN MOUNTAINS ABOVE 10000 FT-
INCLUDING...NORTH PASS...CUMBRES PASS...WOLF CREEK PASS
254 PM MDT THU OCT 11 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM TO 9 PM MDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 9 AM TO 9 PM MDT
FRIDAY. 

* LOCATION...THE EASTERN SAN JUAN AND LA GARITA MOUNTAINS.

* CAUSE AND TIMING...A STRONG STORM SYSTEM WILL SPREAD SNOW 
  ACROSS THE REGION FRIDAY AND FRIDAY NIGHT...WITH SNOW POSSIBLY 
  BECOMING HEAVY AT TIMES ON FRIDAY. INITIALLY SNOW LEVELS WILL 
  START OUT AROUND 12000 FEET FRIDAY MORNING BEFORE DROPPING TO 
  DOWN TO THE PASS LEVEL BY AFTERNOON. 

* SNOW ACCUMULATION...GENERALLY RANGING FROM 4 TO 8 INCHES.

* WIND...SOUTHWEST 15 TO 30 MPH...WITH GUSTS TO AROUND 40 MPH
  ACROSS THE HIGHER PEAKS.

* IMPACT...SLUSHY AND SNOW PACKED ROADS WILL BE POSSIBLE OVER THE
  MOUNTAIN PASSES...ESPECIALLY FRIDAY AFTERNOON THROUGH FRIDAY
  NIGHT. HUNTERS AND OUTDOOR ENTHUSIASTS SHOULD BE PREPARED FOR
  ABRUPT WINTER LIKE CONDITIONS TO MOVE INTO THE AREA FRIDAY
  MORNING.

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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 2:54 PM MDTWinter Weather AdvisoryPUBChaffee, Conejos, Lake, Mineral, Rio Grande, Saguache46 hr

Nearby

Winter Storm Watches in Colorado, 2012Every winter storm watch in 2012

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.