Alert archive / Colorado / Snow Advisories in 2008
Snow Advisory 10, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this snow advisory at Apr 16, 2008, 6:45 PM MDT for 4 counties in Colorado. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 2008, 6:45 PM MDT (00:45 UTC)
- Expired
- Apr 17, 2008, 5:11 AM MDT
- In force
- 10 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Grand County, CO, Jackson County, CO, Larimer County, CO
The radar
The Cheyenne radar (KCYS), 121 km from the middle of the area, began a volume at 00:46 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, 0.8 hours before the alert went out and 227 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.
- Mixed-layer CAPE
- 5 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 545 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 262 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow advisory 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 snow advisory went out at Apr 16, 6:20 PM MDT, 25 minutes earlier.
Area forecast discussion, Apr 16, 6:20 PM MDT, 25 minutes before
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</html>Hazardous weather outlook, Apr 16, 10:52 AM MDT, 7 hours 53 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1052 AM MDT WED APR 16 2008 COZ030>051-171200- 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- 1052 AM MDT WED APR 16 2008 ..WINTER-LIKE STORM WILL AFFECT AREA TONIGHT INTO EARLY THURSDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT RAIN MIXED WITH SNOW WILL OCCUR OVER THE OUTLOOK AREA BY LATE AFTERNOON. PRECIPITATION WILL CHANGE OVER TO ALL SNOW BY THIS EVENING. THE HIGHEST SNOW AMOUNTS WILL BE IN AND NEAR THE FOOTHILLS SOUTH AND WEST OF DENVER AND ALONG THE PALMER DIVIDE. A COLD FRONT PRODUCING UPSLOPE FLOW WILL MOVE SOUTH ACROSS THE NORTHEAST PLAINS EARLY THIS AFTERNOON. THIS WILL COMBINE WITH A MOIST PACIFIC TROUGH OF LOW PRESSURE WHICH WILL MOVE OVER THE STATE TONIGHT THROUGH EARLY THURSDAY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SNOW WILL GRADUALLY TAPER OFF FROM NORTH TO SOUTH ACROSS THE AREA DURING THE MORNING HOURS THURSDAY. ADDITIONAL SNOW ACCUMULATION OF 1 TO 2 INCHES CAN BE EXPECTED ACROSS THE SOUTHERN FRONT RANGE FOOTHILLS AND PALMER DIVIDE AREA...BRINGING STORM TOTALS INTO THE 5 TO 10 INCH RANGE WITH AROUND A FOOT OF SNOW EXPECTED IN FAVORED LOCATIONS AROUND EVERGREEN...CONIFER...AND MONUMENT HILL. MEANWHILE...THE NORTHERN FRONT RANGE FOOTHILLS...PARK COUNTY...AND THE FRONT RANGE MOUNTAINS SHOULD SEE AMOUNTS TOTALING 3 TO 8 INCHES. IN THE FRONT RANGE URBAN CORRIDOR...LOOK FOR STORM TOTALS OF 1 TO 3 INCHES...WITH UP TO 5 INCHES IN THE SOUTHERN AND WESTERN SUBURBS OF DENVER. SIMILAR AMOUNTS CAN ALSO BE EXPECTED STRETCHING EASTWARD ACROSS THE I-70 CORRIDOR TOWARD LIMON. FINALLY...THE FAR NORTHEASTERN PLAINS WILL SEE LITTLE IF ANY SNOW ACCUMULATION. DRY AND WARMER WEATHER WILL PREVAIL FROM FRIDAY THROUGH THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. KTF/ET/BARJENBRUCH
In the hours before
Local storm report, Apr 16, 4:55 PM MDT, 1 hour 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DENVER CO
455 PM MDT WED APR 16 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0436 PM SNOW 2 S BRECKENRIDGE 39.47N 106.04W
04/16/2008 M3.0 INCH SUMMIT CO TRAINED SPOTTER
HEAVY SNOW. 3 INCHES PER HOUR.
0401 PM SNOW 3 NNE BAILEY 39.43N 105.44W
04/16/2008 M5.0 INCH PARK CO TRAINED SPOTTER
TOP OF CROW HILL. SNOW STARTED AT 1 PM.
0344 PM SNOW 4 ENE CONIFER 39.54N 105.23W
04/16/2008 M3.8 INCH JEFFERSON CO TRAINED SPOTTER
SINCE 1238 PM.
0341 PM SNOW 2 ENE BERGEN PARK 39.71N 105.32W
04/16/2008 M3.0 INCH JEFFERSON CO TRAINED SPOTTER
CHIEF HOSA EXIT I-70. ONE INCH PER HOUR.
&&
CLBLocal storm report, Apr 16, 6:04 PM MDT, 41 minutes before
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</html>Nearby
Snow Advisories in Colorado, 2008Every snow advisory in 2008
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.