Alert archive / Colorado / Heavy Snow Warnings in 2007
Heavy Snow Warning 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this heavy snow warning at Dec 7, 2007, 9:50 AM MST for 9 counties in Colorado. It was in force for 13 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 7, 2007, 9:50 AM MST (16:50 UTC)
- Expired
- Dec 7, 2007, 10:21 PM MST
- In force
- 13 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 16:51 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
Grand Junction, CO (KGJT), launched 12:00Z, 4.8 hours before the alert went out and 254 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 564 m above ground
- 0-6 km bulk shear
- 89 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 358 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heavy snow warning 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 heavy snow warning went out at Dec 7, 9:45 AM MST, 5 minutes earlier.
Area forecast discussion, Dec 7, 9:45 AM MST, 5 minutes before
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</html>Hazardous weather outlook, Dec 7, 5:51 AM MST, 3 hours 59 minutes before
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</html>In the hours before
Local storm report, Dec 7, 7:32 AM MST, 2 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
732 AM MST FRI DEC 07 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0715 AM SNOW 2 S STERLING 40.62N 103.22W
12/07/2007 M0.5 INCH LOGAN CO TRAINED SPOTTER
0715 AM HEAVY SNOW FRISCO 39.58N 106.10W
12/07/2007 M14.0 INCH SUMMIT CO TRAINED SPOTTER
STORM TOTAL
0715 AM SNOW 1 SSE ESTES PARK 40.36N 105.51W
12/07/2007 M3.9 INCH LARIMER CO TRAINED SPOTTER
0700 AM SNOW STERLING 40.65N 103.21W
12/07/2007 M1.0 INCH LOGAN CO TRAINED SPOTTER
0600 AM SNOW NIWOT 40.10N 105.16W
12/07/2007 M0.7 INCH BOULDER CO TRAINED SPOTTER
0600 AM SNOW FAIRPLAY 39.22N 106.00W
12/07/2007 M5.0 INCH PARK CO TRAINED SPOTTER
STORM TOTAL 8.0 INCHES
0600 AM SNOW 3 W GREELEY 40.42N 104.80W
12/07/2007 M0.3 INCH WELD CO NWS EMPLOYEE
0600 AM SNOW 5 S GEORGETOWN 39.64N 105.70W
12/07/2007 E2.0 INCH CLEAR CREEK CO CO-OP OBSERVER
STORM TOTAL 16.0 INCHES
0909 PM HEAVY SNOW ST MARYS GLACIER 39.84N 105.65W
12/06/2007 M18.0 INCH CLEAR CREEK CO TRAINED SPOTTER
6 INCHES NEW SINCE 8AM.
0730 PM SNOW 6 SSW GRAND LAKE 40.17N 105.86W
12/06/2007 M5.0 INCH GRAND CO CO-OP OBSERVER
4-5 INCHES AVERAGE SNOW ON THE GROUND SINCE MIDNIGHT
0730 PM HEAVY SNOW 1 NW FRASER 39.95N 105.81W
12/06/2007 M9.1 INCH GRAND CO TRAINED SPOTTER
6.1 INCHES AT 8AM. 3.0 INCHES BETWEEN 8AM AND 7PM
0322 PM HEAVY SNOW WINTER PARK 39.89N 105.78W
12/06/2007 M10.0 INCH GRAND CO TRAINED SPOTTER
1247 PM SNOW HOT SULPHUR SPRINGS 40.07N 106.10W
12/06/2007 M5.5 INCH GRAND CO TRAINED SPOTTER
1100 AM HEAVY SNOW 2 NW FRASER 39.96N 105.82W
12/06/2007 M6.0 INCH GRAND CO TRAINED SPOTTER
0840 AM HEAVY SNOW GEORGETOWN 39.72N 105.70W
12/06/2007 M6.1 INCH CLEAR CREEK CO TRAINED SPOTTER
0800 AM HEAVY SNOW WILLIAMS FORK RESERVOIR 40.03N 106.20W
12/06/2007 M6.0 INCH GRAND CO CO-OP OBSERVER
0800 AM HEAVY SNOW GEORGETOWN 39.72N 105.70W
12/06/2007 M6.1 INCH CLEAR CREEK CO TRAINED SPOTTER
1 INCH BETWEEN 8AM AT 7PM.
0800 AM SNOW KREMMLING 40.06N 106.38W
12/06/2007 M3.0 INCH GRAND CO CO-OP OBSERVER
0730 AM SNOW GRANT 39.45N 105.67W
12/06/2007 M3.0 INCH PARK CO TRAINED SPOTTER
0700 AM SNOW ASPEN SPRINGS 39.83N 105.48W
12/06/2007 M5.0 INCH GILPIN CO AMATEUR RADIO
0700 AM SNOW 5 N BAILEY 39.47N 105.47W
12/06/2007 M1.3 INCH PARK CO AMATEUR RADIO
0700 AM SNOW CONIFER 39.52N 105.30W
12/06/2007 M2.2 INCH JEFFERSON CO AMATEUR RADIO
0700 AM SNOW JEFFERSON 39.38N 105.80W
12/06/2007 M1.0 INCH PARK CO AMATEUR RADIO
0700 AM HEAVY SNOW 1 NW NEDERLAND 39.97N 105.52W
12/06/2007 M6.3 INCH BOULDER CO AMATEUR RADIO
0700 AM HEAVY SNOW 1 NW ROLLINSVILLE 39.93N 105.51W
12/06/2007 M6.1 INCH BOULDER CO AMATEUR RADIO
0650 AM HEAVY SNOW BERTHOUD PASS 39.80N 105.78W
12/06/2007 M17.0 INCH CLEAR CREEK CO TRAINED SPOTTER
SNOWFALL RATE 2.0 INCHES PER HOUR
0650 AM HEAVY SNOW ST MARYS GLACIER 39.84N 105.65W
12/06/2007 M11.0 INCH CLEAR CREEK CO TRAINED SPOTTER
0600 AM HEAVY SNOW 15 S GEORGETOWN 39.50N 105.70W
12/06/2007 M14.0 INCH PARK CO CO-OP OBSERVER
CABIN CREEK...16 INCHES ON THE GROUND
0550 AM SNOW 6 SW BAILEY 39.34N 105.55W
12/06/2007 M1.5 INCH PARK CO TRAINED SPOTTER
0500 AM SNOW BRECKENRIDGE 39.51N 106.05W
12/06/2007 M4.0 INCH SUMMIT CO TRAINED SPOTTER
0500 AM HEAVY SNOW 2 SW WINTER PARK 39.87N 105.81W
12/06/2007 M10.5 INCH GRAND CO TRAINED SPOTTER
0450 AM HEAVY SNOW 11 WNW DILLON 39.69N 106.23W
12/06/2007 M9.5 INCH SUMMIT CO DEPT OF HIGHWAYS
0438 AM HEAVY SNOW 5 S BRECKENRIDGE 39.44N 106.05W
12/06/2007 M8.5 INCH SUMMIT CO TRAINED SPOTTER
&&
JKLocal storm report, Dec 7, 7:39 AM MST, 2 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
739 AM MST FRI DEC 07 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0715 AM SNOW 2 S STERLING 40.62N 103.22W
12/07/2007 M0.5 INCH LOGAN CO TRAINED SPOTTER
0715 AM HEAVY SNOW FRISCO 39.58N 106.10W
12/07/2007 M14.0 INCH SUMMIT CO TRAINED SPOTTER
STORM TOTAL
0715 AM SNOW 1 SSE ESTES PARK 40.36N 105.51W
12/07/2007 M3.9 INCH LARIMER CO TRAINED SPOTTER
0710 AM SNOW 3 W JAMESTOWN 40.12N 105.45W
12/07/2007 M4.4 INCH BOULDER CO TRAINED SPOTTER
STORM TOTAL 8.0 INCHES
0700 AM SNOW STERLING 40.65N 103.21W
12/07/2007 M1.0 INCH LOGAN CO TRAINED SPOTTER
0600 AM SNOW 5 S GEORGETOWN 39.64N 105.70W
12/07/2007 E2.0 INCH CLEAR CREEK CO CO-OP OBSERVER
STORM TOTAL 16.0 INCHES
0600 AM SNOW 3 W GREELEY 40.42N 104.80W
12/07/2007 M0.3 INCH WELD CO NWS EMPLOYEE
0600 AM SNOW FAIRPLAY 39.22N 106.00W
12/07/2007 M5.0 INCH PARK CO TRAINED SPOTTER
STORM TOTAL 8.0 INCHES
0600 AM SNOW NIWOT 40.10N 105.16W
12/07/2007 M0.7 INCH BOULDER CO TRAINED SPOTTER
0909 PM HEAVY SNOW ST MARYS GLACIER 39.84N 105.65W
12/06/2007 M18.0 INCH CLEAR CREEK CO TRAINED SPOTTER
6 INCHES NEW SINCE 8AM.
0730 PM SNOW 6 SSW GRAND LAKE 40.17N 105.86W
12/06/2007 M5.0 INCH GRAND CO CO-OP OBSERVER
4-5 INCHES AVERAGE SNOW ON THE GROUND SINCE MIDNIGHT
0730 PM HEAVY SNOW 1 NW FRASER 39.95N 105.81W
12/06/2007 M9.1 INCH GRAND CO TRAINED SPOTTER
6.1 INCHES AT 8AM. 3.0 INCHES BETWEEN 8AM AND 7PM
0322 PM HEAVY SNOW WINTER PARK 39.89N 105.78W
12/06/2007 M10.0 INCH GRAND CO TRAINED SPOTTER
1247 PM SNOW HOT SULPHUR SPRINGS 40.07N 106.10W
12/06/2007 M5.5 INCH GRAND CO TRAINED SPOTTER
1100 AM HEAVY SNOW 2 NW FRASER 39.96N 105.82W
12/06/2007 M6.0 INCH GRAND CO TRAINED SPOTTER
0840 AM HEAVY SNOW GEORGETOWN 39.72N 105.70W
12/06/2007 M6.1 INCH CLEAR CREEK CO TRAINED SPOTTER
0800 AM SNOW KREMMLING 40.06N 106.38W
12/06/2007 M3.0 INCH GRAND CO CO-OP OBSERVER
0800 AM HEAVY SNOW GEORGETOWN 39.72N 105.70W
12/06/2007 M6.1 INCH CLEAR CREEK CO TRAINED SPOTTER
1 INCH BETWEEN 8AM AT 7PM.
0800 AM HEAVY SNOW WILLIAMS FORK RESERVOIR 40.03N 106.20W
12/06/2007 M6.0 INCH GRAND CO CO-OP OBSERVER
0730 AM SNOW GRANT 39.45N 105.67W
12/06/2007 M3.0 INCH PARK CO TRAINED SPOTTER
0700 AM HEAVY SNOW 1 NW ROLLINSVILLE 39.93N 105.51W
12/06/2007 M6.1 INCH BOULDER CO AMATEUR RADIO
0700 AM HEAVY SNOW 1 NW NEDERLAND 39.97N 105.52W
12/06/2007 M6.3 INCH BOULDER CO AMATEUR RADIO
0700 AM SNOW JEFFERSON 39.38N 105.80W
12/06/2007 M1.0 INCH PARK CO AMATEUR RADIO
0700 AM SNOW CONIFER 39.52N 105.30W
12/06/2007 M2.2 INCH JEFFERSON CO AMATEUR RADIO
0700 AM SNOW 5 N BAILEY 39.47N 105.47W
12/06/2007 M1.3 INCH PARK CO AMATEUR RADIO
0700 AM SNOW ASPEN SPRINGS 39.83N 105.48W
12/06/2007 M5.0 INCH GILPIN CO AMATEUR RADIO
0650 AM HEAVY SNOW BERTHOUD PASS 39.80N 105.78W
12/06/2007 M17.0 INCH CLEAR CREEK CO TRAINED SPOTTER
SNOWFALL RATE 2.0 INCHES PER HOUR
0650 AM HEAVY SNOW ST MARYS GLACIER 39.84N 105.65W
12/06/2007 M11.0 INCH CLEAR CREEK CO TRAINED SPOTTER
0600 AM HEAVY SNOW 15 S GEORGETOWN 39.50N 105.70W
12/06/2007 M14.0 INCH PARK CO CO-OP OBSERVER
CABIN CREEK...16 INCHES ON THE GROUND
0550 AM SNOW 6 SW BAILEY 39.34N 105.55W
12/06/2007 M1.5 INCH PARK CO TRAINED SPOTTER
0500 AM SNOW BRECKENRIDGE 39.51N 106.05W
12/06/2007 M4.0 INCH SUMMIT CO TRAINED SPOTTER
0500 AM HEAVY SNOW 2 SW WINTER PARK 39.87N 105.81W
12/06/2007 M10.5 INCH GRAND CO TRAINED SPOTTER
0450 AM HEAVY SNOW 11 WNW DILLON 39.69N 106.23W
12/06/2007 M9.5 INCH SUMMIT CO DEPT OF HIGHWAYS
0438 AM HEAVY SNOW 5 S BRECKENRIDGE 39.44N 106.05W
12/06/2007 M8.5 INCH SUMMIT CO TRAINED SPOTTER
&&
JKLocal storm report, Dec 7, 7:55 AM MST, 1 hour 55 minutes before
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</html>Local storm report, Dec 7, 8:11 AM MST, 1 hour 39 minutes before
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</html>Local storm report, Dec 7, 9:32 AM MST, 18 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
932 AM MST FRI DEC 07 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM SNOW 7 ENE VIRGINIA DALE 40.99N 105.23W
12/07/2007 M3.8 INCH LARIMER CO TRAINED SPOTTER
0800 AM SNOW 1 SW EVERGREEN 39.62N 105.36W
12/07/2007 M3.0 INCH JEFFERSON CO TRAINED SPOTTER
1.0 INCHES SNOW OVERNIGHT
0800 AM SNOW GUFFEY 38.75N 105.53W
12/07/2007 M5.0 INCH PARK CO PUBLIC
0750 AM SNOW 7 S NEW RAYMER 40.51N 103.83W
12/07/2007 M3.3 INCH MORGAN CO TRAINED SPOTTER
0715 AM SNOW 2 S STERLING 40.62N 103.22W
12/07/2007 M0.5 INCH LOGAN CO TRAINED SPOTTER
0715 AM SNOW 1 SSE ESTES PARK 40.36N 105.51W
12/07/2007 M3.9 INCH LARIMER CO TRAINED SPOTTER
0715 AM HEAVY SNOW FRISCO 39.58N 106.10W
12/07/2007 M14.0 INCH SUMMIT CO TRAINED SPOTTER
STORM TOTAL SINCE WEDNESDAY NIGHT
0710 AM SNOW 3 W JAMESTOWN 40.12N 105.45W
12/07/2007 M4.4 INCH BOULDER CO TRAINED SPOTTER
4.4 INCHES OVERNIGHT. STORM TOTAL 8.0 INCHES SINCE
WEDNESDAY NIGHT.
0700 AM SNOW 1 NW ROLLINSVILLE 39.93N 105.51W
12/07/2007 M4.7 INCH BOULDER CO AMATEUR RADIO
STORM TOTAL 11.0 INCHES SINCE WEDNESDAY NIGHT
0700 AM SNOW NEDERLAND 39.96N 105.50W
12/07/2007 M5.3 INCH BOULDER CO AMATEUR RADIO
STORM TOTAL 11.8 INCHES SINCE WEDNESDAY NIGHT
0700 AM HEAVY SNOW 1 E DILLON 39.62N 106.02W
12/07/2007 M6.0 INCH SUMMIT CO TRAINED SPOTTER
STORM TOTAL 15.0 INCHES SINCE WEDNESDAY NIGHT
0700 AM SNOW STERLING 40.65N 103.21W
12/07/2007 M1.0 INCH LOGAN CO TRAINED SPOTTER
0600 AM SNOW 2 N LOVELAND 40.45N 105.07W
12/07/2007 M1.6 INCH LARIMER CO TRAINED SPOTTER
0600 AM SNOW 3 W GREELEY 40.42N 104.80W
12/07/2007 M0.3 INCH WELD CO NWS EMPLOYEE
0600 AM SNOW NIWOT 40.10N 105.16W
12/07/2007 M0.7 INCH BOULDER CO TRAINED SPOTTER
0600 AM SNOW FAIRPLAY 39.22N 106.00W
12/07/2007 M5.0 INCH PARK CO TRAINED SPOTTER
STORM TOTAL 8.0 INCHES SINCE WEDNESDAY NIGHT
0600 AM SNOW 5 S GEORGETOWN 39.64N 105.70W
12/07/2007 E2.0 INCH CLEAR CREEK CO CO-OP OBSERVER
STORM TOTAL 16.0 INCHES SINCE WEDNESDAY NIGHT
0909 PM HEAVY SNOW ST MARYS GLACIER 39.84N 105.65W
12/06/2007 M18.0 INCH CLEAR CREEK CO TRAINED SPOTTER
6 INCHES NEW SINCE 8AM.
0730 PM SNOW 6 SSW GRAND LAKE 40.17N 105.86W
12/06/2007 M5.0 INCH GRAND CO CO-OP OBSERVER
4-5 INCHES AVERAGE SNOW ON THE GROUND SINCE MIDNIGHT
0730 PM HEAVY SNOW 1 NW FRASER 39.95N 105.81W
12/06/2007 M9.1 INCH GRAND CO TRAINED SPOTTER
6.1 INCHES AT 8AM. 3.0 INCHES BETWEEN 8AM AND 7PM
0322 PM HEAVY SNOW WINTER PARK 39.89N 105.78W
12/06/2007 M10.0 INCH GRAND CO TRAINED SPOTTER
1247 PM SNOW HOT SULPHUR SPRINGS 40.07N 106.10W
12/06/2007 M5.5 INCH GRAND CO TRAINED SPOTTER
1100 AM HEAVY SNOW 2 NW FRASER 39.96N 105.82W
12/06/2007 M6.0 INCH GRAND CO TRAINED SPOTTER
0840 AM HEAVY SNOW GEORGETOWN 39.72N 105.70W
12/06/2007 M6.1 INCH CLEAR CREEK CO TRAINED SPOTTER
0800 AM HEAVY SNOW WILLIAMS FORK RESERVOIR 40.03N 106.20W
12/06/2007 M6.0 INCH GRAND CO CO-OP OBSERVER
0800 AM HEAVY SNOW GEORGETOWN 39.72N 105.70W
12/06/2007 M6.1 INCH CLEAR CREEK CO TRAINED SPOTTER
1 INCH BETWEEN 8AM AT 7PM.
0800 AM SNOW KREMMLING 40.06N 106.38W
12/06/2007 M3.0 INCH GRAND CO CO-OP OBSERVER
0730 AM SNOW GRANT 39.45N 105.67W
12/06/2007 M3.0 INCH PARK CO TRAINED SPOTTER
0700 AM SNOW ASPEN SPRINGS 39.83N 105.48W
12/06/2007 M5.0 INCH GILPIN CO AMATEUR RADIO
0700 AM SNOW 5 N BAILEY 39.47N 105.47W
12/06/2007 M1.3 INCH PARK CO AMATEUR RADIO
0700 AM SNOW CONIFER 39.52N 105.30W
12/06/2007 M2.2 INCH JEFFERSON CO AMATEUR RADIO
0650 AM HEAVY SNOW BERTHOUD PASS 39.80N 105.78W
12/06/2007 M17.0 INCH CLEAR CREEK CO TRAINED SPOTTER
SNOWFALL RATE 2.0 INCHES PER HOUR
0650 AM HEAVY SNOW ST MARYS GLACIER 39.84N 105.65W
12/06/2007 M11.0 INCH CLEAR CREEK CO TRAINED SPOTTER
0550 AM SNOW 6 SW BAILEY 39.34N 105.55W
12/06/2007 M1.5 INCH PARK CO TRAINED SPOTTER
0500 AM SNOW BRECKENRIDGE 39.51N 106.05W
12/06/2007 M4.0 INCH SUMMIT CO TRAINED SPOTTER
0500 AM HEAVY SNOW 2 SW WINTER PARK 39.87N 105.81W
12/06/2007 M10.5 INCH GRAND CO TRAINED SPOTTER
0450 AM HEAVY SNOW 11 WNW DILLON 39.69N 106.23W
12/06/2007 M9.5 INCH SUMMIT CO DEPT OF HIGHWAYS
0438 AM HEAVY SNOW 5 S BRECKENRIDGE 39.44N 106.05W
12/06/2007 M8.5 INCH SUMMIT CO TRAINED SPOTTER
&&
JKLocal storm report, Dec 7, 9:49 AM MST, 1 minute before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 7, 4:08 PM MST | Snow Advisory | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 11 hr |
| Dec 7, 4:08 PM MST | Winter Weather Advisory | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 10 more | 11 hr |
Nearby
Heavy Snow Warnings in Colorado, 2007Every heavy snow warning 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.