Alert archive / Colorado / Winter Storm Watches in 2013

Winter Storm Watch 10, NWS Pueblo, CO

April 15, 2013Chaffee County, Lake County, Saguache County, Colorado

NWS Pueblo, CO issued this winter storm watch at Apr 15, 2013, 9:50 PM MDT for Chaffee County, Lake County, Saguache County, Colorado. It took effect at Apr 17, 2013, 6:00 AM MDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 15, 2013, 9:50 PM MDT (03:50 UTC)
In effect from
Apr 17, 2013, 6:00 AM MDT
Expired
Apr 16, 2013, 3:30 PM MDT
In force
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 03:52 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

Denver, CO (KDNR), launched 00:00Z, 3.8 hours before the alert went out and 294 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, Denver, CO at 00:00Z on 2013-04-16Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2013-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939587897117136Sfc1 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
565 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
440 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Pueblo, CO wrote its last area forecast discussion before this winter storm watch went out at Apr 15, 3:37 PM MDT, 6 hours 13 minutes earlier.

Area forecast discussion, Apr 15, 3:37 PM MDT, 6 hours 13 minutes before
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Hazardous weather outlook, Apr 15, 11:41 AM MDT, 10 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PUEBLO CO
1141 AM MDT MON APR 15 2013

COZ058>089-093>099-161745-
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-
1141 AM MDT MON APR 15 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL...EAST
CENTRAL...SOUTH CENTRAL AND SOUTHEAST COLORADO.

.DAY ONE...THIS AFTERNOON AND TONIGHT

PERIODS OF LIGHT TO MODERATE SNOW CAN BE EXPECTED ACROSS THE
CONTINENTAL DIVIDE TODAY AND TONIGHT. SNOW ACCUMULATIONS OF 5 TO 10
INCHES ARE EXPECTED ACROSS THE CENTRAL MOUNTAINS...WITH 1 TO 3
INCHES POSSIBLE ACROSS THE SOUTHWEST MOUNTAINS.

ISOLATED TO SCATTERED SHOWERS WILL BE POSSIBLE ACROSS THE REST OF
THE HIGHER TERRAIN AND IMMEDIATE ADJACENT PLAINS...WITH LOCALIZED
ACCUMULATIONS OF A FEW INCHES POSSIBLE.

CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED OVER OTERO AND LAS
ANIMAS COUNTIES TODAY. SOME SPOTTY AREAS OF CRITICAL CONDITIONS
WILL ALSO BE POSSIBLE OVER THE REST OF THE SERN PLAINS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

TUESDAY THROUGH THURSDAY...A MIXED BAG OF WEATHER WILL IMPACT
SOUTHERN COLORADO. SEVERAL INCHES OF SNOW WILL ACCUMULATE ALONG
THE CONTINENTAL DIVIDE DURING THIS PERIOD...ESPECIALLY DURING THE
DAY ON WEDNESDAY. ACROSS THE LOWER ELEVATIONS...THERE COULD BE
SOME SPOTTY LIGHT PRECIPITATION AT TIMES IN THE FORM OF LIGHT
SNOW...DRIZZLE OR FREEZING DRIZZLE...BUT THE MAIN CONCERN THROUGH
MOST OF WEDNESDAY WILL PROBABLY BE THE FIRE DANGER. A COMBINATION
OF WINDS GUSTING OVER 40 MPH AT TIMES AND HUMIDITIES IN THE TEENS
WILL RESULT IN HIGH FIRE DANGER ACROSS THE SAN LUIS VALLEY AND
PARTS OF THE PLAINS BOTH TUESDAY AND WEDNESDAY.

LATE WEDNESDAY AND WEDNESDAY NIGHT...UPPER LOW PRESSURE WILL SHIFT
INTO NORTHEAST COLORADO SENDING A COLD FRONT SOUTH THROUGH THE
SOUTHEAST COLORADO PLAINS. AT THIS TIME...THE BEST CHANCE FOR SNOW
WILL SHIFT INTO EASTERN COLORADO...AS SNOWFALL WINDS DOWN ALONG
THE CONTINENTAL DIVIDE. AS THE FRONT MOVES THROUGH...MOST OF
SOUTHEAST COLORADO WILL SEE A BRIEF SHOT OF WIND AND SNOW ALTHOUGH
IT DOESN'T LOOK TO STICK AROUND LONG ENOUGH TO REQUIRE WINTER
WEATHER HIGHLIGHTS AT THIS TIME.

STRONG NORTHERLY WINDS IN THE UPPER ATMOSPHERE WILL BRING MUCH
COLDER THAN AVERAGE TEMPERATURES TO SOUTHERN COLORADO ON
THURSDAY. BRISK WINDS COULD DROP WIND CHILL TEMPERATURES TO
NEAR ZERO AT TIMES. SNOW SHOWERS ALONG AND NEAR THE MOUNTAINS
COULD DROP LOCAL LIGHT ACCUMULATIONS OF SNOW.

DRY AND WARMER WEATHER WILL RETURN TO THE AREA ON FRIDAY.  A NEW
WEATHER SYSTEM COULD MOVE ACROSS THE AREA SATURDAY AFTERNOON AND
EVENING. THIS SYSTEM COULD BRING ADDITIONAL LIGHT ACCUMULATIONS
OF SNOW TO THE MOUNTAIN AREAS.

.SPOTTER INFORMATION STATEMENT...

WEATHER CONDITIONS THAT MEET REPORTING CRITERIA FOR SPOTTERS WILL BE
LIKELY OVER THE CENTRAL MOUNTAINS AND POSSIBLE ACROSS THE REST OF
THE HIGHER TERRAIN THROUGH TONIGHT.

In the hours before

Local storm report, Apr 15, 5:39 PM MDT, 4 hours 11 minutes before
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Special weather statement, Apr 15, 6:02 PM MDT, 3 hours 48 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 3:30 PM MDTBlizzard WatchPUBEl Paso17 hr
Apr 16, 3:30 PM MDTWinter Storm WarningPUBChaffee, Lake, Saguache33 hr
Apr 16, 3:30 PM MDTWinter Weather AdvisoryPUBAlamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more36 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.