Alert archive / Colorado / Winter Storm Watches in 2013

Winter Storm Watch 9, NWS Denver/Boulder, CO

April 29, 201312 counties in Colorado

NWS Denver/Boulder, CO issued this winter storm watch at Apr 29, 2013, 3:05 PM MDT for 12 counties in Colorado. It took effect at Apr 30, 2013, 6:00 PM MDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 29, 2013, 3:05 PM MDT (21:05 UTC)
In effect from
Apr 30, 2013, 6:00 PM MDT
Expired
Apr 30, 2013, 12:12 PM MDT
In force
Issued by
NWS Denver/Boulder, CO

Counties Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 82 km from the middle of the area, began a volume at 21:05 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 forecasters said that day

The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this winter storm watch went out at Apr 29, 3:05 PM MDT, 0 minutes earlier.

Area forecast discussion, Apr 29, 3:05 PM MDT, 0 minutes before
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Hazardous weather outlook, Apr 29, 10:54 AM MDT, 4 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1054 AM MDT MON APR 29 2013

COZ030>051-300500-
JACKSON COUNTY BELOW 9000 FEET-
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
1054 AM MDT MON APR 29 2013

...ANOTHER LATE SPRING SNOW STORM EXPECTED TUESDAY NIGHT INTO
WEDNESDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

ANOTHER DAY OF ABOVE NORMAL TEMPERATURES IS ANTICIPATED TODAY TO
START THE WORK WEEK. SOME GUSTY WESTERLY WINDS UP TO 30 MPH ARE
EXPECTED IN MOST AREAS THIS AFTERNOON.

THE NEXT WEATHER SYSTEM WILL APPROACH THE OUTLOOK AREA LATE
TONIGHT BRINGING THE THREAT OF PRECIPITATION TO MAINLY MOUNTAIN
AREAS NEAR THE WYOMING BORDER TOWARDS DAWN TUESDAY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A STRONGER SYSTEM IS EXPECTED TO DROP OUT OF THE NORTHERN ROCKIES
AND INTO COLORADO LATE TUESDAY THROUGH WEDNESDAY NIGHT.
TEMPERATURES WILL BE MUCH COLDER WITH SNOW IN THE FRONT RANGE
MOUNTAINS...FOOTHILLS AND THE NORTHERN FRONT RANGE URBAN CORRIDOR...WITH
A MIX OF RAIN AND SNOW TUESDAY NIGHT CHANGING INTO ALL SNOW
WEDNESDAY MORNING ELSEWHERE. SIGNIFICANT SNOWFALL WILL BE POSSIBLE
ESPECIALLY IN THE FRONT RANGE MOUNTAINS AND FOOTHILLS NORTH OF
INTERSTATE 70. THE SYSTEM WILL EXIT THE REGION EARLY THURSDAY.
CURRENTLY STORM TOTAL ACCUMULATIONS COULD BE 2 TO 6 INCHES OVER
THE PLAINS...WITH HIGHER AMOUNTS THE CLOSER TO THE MOUNTAINS DUE
TO UPSLOPE FLOW. FOOTHILLS AND THE NORTHERN URBAN CORRIDOR COULD
SEE 5 TO 8 INCHES...AND THE FRONT RANGE MOUNTAINS MAY SEE 6 TO 12
INCHES. ALL THESE ACCUMULATIONS ARE GOING TO BE HEAVILY INFLUENCED
BY THE CURRENT WARM TEMPERATURES WE ARE EXPERIENCING WHICH WILL
MELT THE INITIAL SNOWFALL. HOWEVER...THE NEARBY JET WILL LIKELY
INFLUENCE THE ACCUMULATIONS WITH BANDED SNOWFALL. THIS IS A VERY
CHALLENGING SET-UP...ESPECIALLY WITH IT BEING MAY 1ST. STAY TUNED
TO THE FORECAST FOR ADDITIONAL INFORMATION AS IT BECOMES
AVAILABLE.

A DRIER NORTHWESTERLY FLOW WILL RETURN FRIDAY THROUGH SUNDAY WITH
JUST A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS BY THE WEEKEND.
TEMPERATURES WILL MODERATE BUT REMAIN COOLER THAN SEASONAL
NORMALS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

ENTREKIN/KRIEDERMAN

Nearby

Winter Storm Watches in Colorado, 2013Every winter storm watch 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; radar from the NEXRAD Level II archive.