Alert archive / Colorado / Snow Advisories in 2007
Snow Advisory 11, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this snow advisory at May 5, 2007, 11:52 PM MDT for 7 counties in Colorado. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 5, 2007, 11:52 PM MDT (05:52 UTC)
- Expired
- May 6, 2007, 3:33 AM MDT
- In force
- 4 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO
The radar
The Denver radar (KFTG), 74 km from the middle of the area, began a volume at 05:56 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 5.9 hours before the alert went out and 435 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
- 66 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 3132 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 96 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 May 5, 3:20 PM MDT, 8 hours 32 minutes earlier.
Area forecast discussion, May 5, 3:20 PM MDT, 8 hours 32 minutes before
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</html>Hazardous weather outlook, May 5, 11:10 AM MDT, 12 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1110 AM MDT SAT MAY 05 2007 COZ030>051-061200- 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- 1110 AM MDT SAT MAY 05 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE PLAINS THROUGH TONIGHT. BRIEF HEAVY RAIN AND SMALL HAIL CAN BE EXPECTED WITH THE STRONGER STORMS. EAST OF A FORT MORGAN TO LIMON LINE...A FEW STORMS COULD BECOME SEVERE AS THE SHEAR ENVIRONMENT IS A BIT MORE FAVORABLE WITH HAIL THE MAIN THREAT. ACROSS THE MOUNTAINS AND FOOTHILLS...OCCASIONAL SHOWERS ALONG WITH FEW THUNDERSTORMS CAN BE EXPECTED. THE SNOW LEVEL WILL HOVER AROUND 7500 FEET THIS AFTERNOON...THEN LOWER TO AROUND 6500 TONIGHT. SNOW ACCUMULATIONS OF 1 TO 4 INCHES CAN BE EXPECTED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY MOIST AND UNSEASONABLY COOL CONDITIONS CAN BE EXPECTED THROUGH EARLY NEXT WEEK AS A LARGE LOW PRESSURE SYSTEM SLOWLY MOVES ACROSS THE AREA. SCATTERED LIGHT SHOWERS ARE EXPECTED THROUGHOUT THE DAY SUNDAY AND MANY MOUNTAIN LOCATIONS MAY SEE SOME LIGHT SNOW ACCUMULATION BY MONDAY MORNING. AT LOWER ELEVATIONS...MOSTLY OF THE PRECIPITATION WILL BE IN THE FORM OF RAIN...BUT TEMPERATURES SUNDAY NIGHT MAY LOWER ENOUGH FOR A MIX OF RAIN AND SNOW ON THE PALMER DIVIDE AND IN AREAS NEAR THE FOOTHILLS. BY MONDAY...TEMPERATURES WILL BEGIN TO MODERATE AS THIS STORM SYSTEM SLOWLY MOVES EAST OF THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED AFTER 1 PM THIS AFTERNOON ACROSS THE NORTHEAST CORNER. 030/046
Nearby
Snow Advisories in Colorado, 2007Every snow advisory in 2007
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.