Alert archive / Colorado / Winter Storm Watches in 2015

Winter Storm Watch 10, NWS Pueblo, CO

February 24, 201511 counties in Colorado

NWS Pueblo, CO issued this winter storm watch at Feb 24, 2015, 8:19 PM MST for 11 counties in Colorado. It took effect at Feb 25, 2015, 4:00 PM MST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 24, 2015, 8:19 PM MST (03:19 UTC)
In effect from
Feb 25, 2015, 4:00 PM MST
Expired
Feb 25, 2015, 4:10 AM MST
In force
Issued by
NWS Pueblo, CO

Counties Alamosa County, CO, Chaffee County, CO, Costilla County, CO, Custer County, CO, El Paso County, CO, Fremont County, CO, Huerfano County, CO, Las Animas County, CO, Pueblo County, CO, Saguache County, CO, Teller County, CO

The radar

The Pueblo radar (KPUX), 101 km from the middle of the area, began a volume at 03:20 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 (KDEN), launched 00:00Z, 3.3 hours before the alert went out and 262 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 2015-02-25Temperature 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 2015-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
2327 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
86 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 Feb 24, 3:11 PM MST, 5 hours 8 minutes earlier.

Area forecast discussion, Feb 24, 3:11 PM MST, 5 hours 8 minutes before
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Hazardous weather outlook, Feb 24, 5:31 AM MST, 14 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PUEBLO CO
531 AM MST TUE FEB 24 2015

COZ058>089-093>099-251245-
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-
531 AM MST TUE FEB 24 2015

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED SNOW SHOWERS WILL CONTINUE ACROSS THE EASTERN SAN JUAN
MOUNTAINS...SOUTHERN SANGRE DE CRISTO MOUNTAINS AND SOUTHERN
PORTIONS OF THE SAN LUIS VALLEY TODAY.  ADDITIONAL ACCUMULATIONS OF
AN INCH OR TWO WILL BE POSSIBLE BY THIS EVENING.  ISOLATED SNOW
SHOWERS WILL BE POSSIBLE ELSEWHERE ALONG THE CONTINENTAL DIVIDE AND
ACROSS THE NORTHERN SANGRE DE CRISTO MOUNTAINS...BUT ANY ADDITIONAL
ACCUMULATIONS WILL REMAIN VERY SPOTTY AND LIGHT.

THE NEXT STORM SYSTEM WILL MOVE INTO NORTHWEST COLORADO TONIGHT
SPREADING SCATTERED SNOW SHOWERS INTO THE CENTRAL MOUNTAINS TOWARDS
EARLY WEDNESDAY MORNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

AN ACTIVE UPPER FLOW PATTERN IS EXPECTED TO PRODUCE UNSETTLED
CONDITIONS OVER SOUTHERN COLORADO BEGINNING WEDNESDAY AND
CONTINUING INTO THE WEEKEND WITH LOCALLY HEAVY SNOW...ESPECIALLY
OVER HIGHER TERRAIN LOCATIONS DURING THIS TIME-FRAME. IN
ADDITION...A REINFORCING SHOT OF COLD AIR...PRIMARILY OVER EASTERN
SECTIONS...IS PROJECTED TO GENERATE MUCH COOLER TEMPERATURES...BEGINNING
WEDNESDAY NIGHT AND CONTINUING INTO SATURDAY.

THE UPPER WEATHER PATTERN SHIFTS OVER THE WEEKEND...WITH ANOTHER
UPPER LOW PRESSURE SYSTEM BRINGING SNOW...HEAVY AT TIMES...TO HIGHER
TERRAIN LOCATIONS...ESPECIALLY THE SAN JUAN MOUNTAINS...FROM
FRIDAY NIGHT INTO THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

WEATHER CONDITIONS THAT MEET REPORTING CRITERIA FOR SPOTTERS WILL BE
POSSIBLE ACROSS THE MOUNTAINS TODAY AND TONIGHT.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 25, 4:10 AM MSTWinter Storm WarningPUBAlamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more49 hr
Feb 25, 4:10 AM MSTWinter Weather AdvisoryPUBBaca, Custer, El Paso, Fremont, Las Animas, Pueblo and 1 more55 hr

Nearby

Winter Storm Watches in Colorado, 2015Every winter storm watch in 2015

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.