Alert archive / Colorado / Winter Storm Warnings in 2007
Winter Storm Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Dec 26, 2007, 7:32 PM MST for 14 counties in Colorado. It took effect at Dec 27, 2007, 5:00 AM MST. It was in force for 15 hr. 54 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 26, 2007, 7:32 PM MST (02:32 UTC)
- In effect from
- Dec 27, 2007, 5:00 AM MST
- Expired
- Dec 27, 2007, 7:43 PM MST
- In force
- 15 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Jefferson County, CO, Lincoln County, CO, Morgan County, CO, Park County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 18 km from the middle of the area, began a volume at 02:31 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 27, 6:00 AM MST | SNOW 1.2 | 6 Ne Denver, CO | |
| Dec 27, 6:30 AM MST | SNOW 1.5 | 6 Sw Evergreen, CO | |
| Dec 27, 7:00 AM MST | SNOW 1 | Wheat Ridge, CO | |
| Dec 27, 7:00 AM MST | SNOW 1.2 | 8 Se Matheson, CO | |
| Dec 27, 7:00 AM MST | SNOW 2.5 | Northglenn, CO | |
| Dec 27, 7:30 AM MST | SNOW 1 | Lakewood, CO | |
| Dec 27, 7:30 AM MST | SNOW 3 | Kassler, CO | |
| Dec 27, 7:35 AM MST | SNOW 2.5 | 1 Sw Erie, CO | |
| Dec 27, 7:45 AM MST | SNOW 1.1 | Bailey, CO | |
| Dec 27, 7:53 AM MST | SNOW 1.9 | 4 S Evergreen, CO | |
| Dec 27, 8:00 AM MST | SNOW 3.2 | Louviers, CO | |
| Dec 27, 8:09 AM MST | SNOW 2 | Highlands Ranch, CO | |
| Dec 27, 8:30 AM MST | SNOW 2 | Centennial, CO | |
| Dec 27, 8:32 AM MST | SNOW 1 | 4 E Parker, CO | |
| Dec 27, 8:40 AM MST | SNOW 2.5 | Genesee, CO | |
| Dec 27, 8:43 AM MST | SNOW 2.4 | 8 Se Watkins, CO | |
| Dec 27, 9:00 AM MST | SNOW 3.1 | Castle Rock, CO | |
| Dec 27, 9:00 AM MST | SNOW 4.4 | Fort Morgan, CO | |
| Dec 27, 9:00 AM MST | SNOW 5.4 | Roxborough Park, CO | |
| Dec 27, 9:06 AM MST | SNOW 3.5 | 1 N Longmont, CO | |
| Dec 27, 10:20 AM MST | SNOW 3.5 | Arvada, CO | |
| Dec 27, 10:40 AM MST | SNOW 3.2 | Genesee, CO | |
| Dec 27, 11:15 AM MST | SNOW 4 | 2 Sw Arvada, CO | |
| Dec 27, 11:28 AM MST | SNOW 3.9 | 5 Nne Thornton, CO | |
| Dec 27, 11:41 AM MST | SNOW 1.5 | 4 N Bailey, CO | |
| Dec 27, 12:10 PM MST | SNOW 5 | 7 Sw Boulder, CO | |
| Dec 27, 12:30 PM MST | SNOW 3 | 2 Sse Federal Heights, CO | |
| Dec 27, 12:48 PM MST | SNOW 2.8 | 3 Sse Aurora, CO | |
| Dec 27, 1:44 PM MST | SNOW 2 | 3 Sw Conifer, CO | |
| Dec 27, 2:30 PM MST | SNOW 3.5 | 3 Se Parker, CO | |
| Dec 27, 2:53 PM MST | HEAVY SNOW 6.5 | Sw Arvada, CO | |
| Dec 27, 3:01 PM MST | SNOW 5 | N Longmont, CO | |
| Dec 27, 3:15 PM MST | SNOW 3 | 4 E Parker, CO | |
| Dec 27, 3:39 PM MST | SNOW 5 | Simla, CO | |
| Dec 27, 3:40 PM MST | SNOW 5.5 | Genesee, CO | 2.3 PAST 5 HOURS. |
| Dec 27, 3:45 PM MST | SNOW 3 | 1 N Westminster, CO | |
| Dec 27, 3:57 PM MST | SNOW 3.5 | 1 Nnw Centennial, CO | |
| Dec 27, 4:02 PM MST | SNOW 5.9 | 12 Se Buckley Afb, CO | |
| Dec 27, 4:03 PM MST | SNOW 3.5 | Centennial, CO | |
| Dec 27, 4:05 PM MST | SNOW 4.5 | 3 Sse Aurora, CO | |
| Dec 27, 4:11 PM MST | SNOW 4 | Littleton, CO | |
| Dec 27, 4:41 PM MST | SNOW 4.2 | 6 Ssw Elizabeth, CO | |
| Dec 27, 4:42 PM MST | HEAVY SNOW 6 | 6 S New Raymer, CO | |
| Dec 27, 5:00 PM MST | SNOW 2.9 | Boulder, CO | |
| Dec 27, 5:08 PM MST | SNOW 4 | Kiowa, CO | |
| Dec 27, 5:12 PM MST | SNOW 4.5 | Genesee, CO | |
| Dec 27, 6:02 PM MST | HEAVY SNOW 7.3 | Ken Caryl, CO | KEN CARYL VALLEY. 4.0 INCHES PAST 3 HOURS. |
| Dec 27, 6:17 PM MST | HEAVY SNOW 6.3 | Eldorado Springs, CO | .23 MELT DOWN. |
| Dec 27, 7:01 PM MST | HEAVY SNOW 7.5 | 8 Se Watkins, CO | |
| Dec 27, 7:08 PM MST | HEAVY SNOW 6 | Arriba, CO | |
| Dec 27, 7:08 PM MST | SNOW 6.5 | Agate, CO | |
| Dec 27, 7:21 PM MST | SNOW 4 | 15 E Karval, CO | |
| Dec 27, 7:27 PM MST | SNOW 5.9 | 5 Ne Thornton, CO | |
| Dec 27, 7:42 PM MST | SNOW 6 | 1 Nnw Louisville, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 2.5 hours before the alert went out and 127 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
- 1918 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS45 KBOU 270232 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 732 PM MST WED DEC 26 2007 ...MORE SNOW THURSDAY FOR NORTHEAST COLORADO... .A VIGOROUS UPPER LEVEL WEATHER DISTURBANCE WILL MOVE OVER THE DESERT SOUTHWEST THIS EVENING AND WILL STRENGTHEN AS IT MOVES EAST INTO CENTRAL PLAINS BY THURSDAY NIGHT. AT THE SURFACE...A LOW WILL FORM OVER NEW MEXICO AND TRACK EAST OVER THE SOUTHERN PLAINS. MOISTURE AND WINDS CIRCULATING AROUND THE SURFACE LOW WILL PRODUCE UPSLOPE SNOWFALL ACROSS THE PLAINS. NORTH TO NORTHEAST WINDS WILL ALSO INCREASE...POSSIBLY CAUSING AREAS OF BLOWING AND DRIFTING SNOW AND POOR VISIBILITIES AT TIMES. COZ039>041-044>047-049-271045- /O.UPG.KBOU.WS.A.0008.071227T1300Z-071228T0600Z/ /O.NEW.KBOU.WS.W.0009.071227T1200Z-071228T0600Z/ 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- 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- WASHINGTON COUNTY- INCLUDING...ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT... AURORA...BRIGHTON...CITY OF DENVER... DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON...FORDER... KARVAL...KUTCH...PUNKIN CENTER...AKRON...COPE...LAST CHANCE... OTIS 732 PM MST WED DEC 26 2007 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOW WILL DEVELOP EARLY THURSDAY MORNING AND CONTINUE THROUGH THE DAY. SNOW ACCUMULATIONS WILL BE 4 TO 8 INCHES WITH LOCALLY HIGHER AMOUNTS POSSIBLE ALONG THE PALMER DIVIDE. NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WILL CREATE AREAS OF BLOWING AND DRIFTING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ COZ036-271045- /O.NEW.KBOU.WS.W.0009.071227T1200Z-071228T0600Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING...BAILEY...CENTRAL CITY...EVERGREEN...GEORGETOWN... IDAHO SPRINGS...WESTCREEK 732 PM MST WED DEC 26 2007 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. SNOW WILL DEVELOP EARLY THURSDAY MORNING AND CONTINUE THROUGH THE DAY. SNOW ACCUMULATIONS WILL BE 6 TO 10 INCHES WITH LOCALLY HIGHER AMOUNTS POSSIBLE. NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WILL CREATE AREAS OF BLOWING AND DRIFTING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ COZ043-048-050-051-271045- /O.UPG.KBOU.WS.A.0008.071227T1300Z-071228T0600Z/ /O.NEW.KBOU.SB.Y.0024.071227T1200Z-071228T0600Z/ CENTRAL AND SOUTH WELD COUNTY-LOGAN COUNTY-SEDGWICK COUNTY- PHILLIPS COUNTY- INCLUDING...EATON...FORT LUPTON...GREELEY...ROGGEN...CROOK... MERINO...STERLING...PEETZ...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 732 PM MST WED DEC 26 2007 ...SNOW AND BLOWING SNOW ADVISORY IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SNOW AND BLOWING SNOW ADVISORY...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOW WILL DEVELOP EARLY THURSDAY MORNING AND CONTINUE THROUGH THE DAY. SNOW ACCUMULATIONS WILL BE 3 TO 6 INCHES. NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WILL CREATE AREAS OF BLOWING AND DRIFTING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. $$ COZ035-042-271045- /O.NEW.KBOU.SB.Y.0024.071227T1200Z-071228T0600Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- NORTHEAST WELD COUNTY- INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM 732 PM MST WED DEC 26 2007 ...SNOW AND BLOWING SNOW ADVISORY IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SNOW AND BLOWING SNOW ADVISORY...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. SNOW WILL DEVELOP EARLY THURSDAY MORNING AND CONTINUE THROUGH THE DAY. SNOW ACCUMULATIONS WILL BE 3 TO 6 INCHES...IN AND NEAR THE FOOTHILLS SNOW ACCUMULATIONS OF 4 TO 8 INCHES WILL BE LIKELY. NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WILL CREATE AREAS OF BLOWING AND DRIFTING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. $$
5 follow-up statements
000 WWUS45 KBOU 270420 AAA WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 920 PM MST WED DEC 26 2007 ...MORE SNOW THURSDAY FOR NORTHEAST COLORADO... .A VIGOROUS UPPER LEVEL WEATHER DISTURBANCE WILL MOVE OVER THE DESERT SOUTHWEST THIS EVENING AND WILL STRENGTHEN AS IT MOVES EAST INTO CENTRAL PLAINS BY THURSDAY NIGHT. AT THE SURFACE...A LOW WILL FORM OVER NEW MEXICO AND TRACK EAST OVER THE SOUTHERN PLAINS. MOISTURE AND WINDS CIRCULATING AROUND THE SURFACE LOW WILL PRODUCE UPSLOPE SNOWFALL ACROSS THE PLAINS. NORTH TO NORTHEAST WINDS WILL ALSO INCREASE...POSSIBLY CAUSING AREAS OF BLOWING AND DRIFTING SNOW AND POOR VISIBILITIES AT TIMES. COZ036-039>041-044>047-049-271230- /O.CON.KBOU.WS.W.0009.071227T1200Z-071228T0600Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- 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- 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- WASHINGTON COUNTY- INCLUDING...BAILEY...CENTRAL CITY...EVERGREEN...GEORGETOWN... IDAHO SPRINGS...WESTCREEK...ARVADA...BOULDER...GOLDEN... LAKEWOOD...LONGMONT...AURORA...BRIGHTON...CITY OF DENVER... DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON...FORDER... KARVAL...KUTCH...PUNKIN CENTER...AKRON...COPE...LAST CHANCE... OTIS 920 PM MST WED DEC 26 2007 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. SNOW WILL DEVELOP EARLY THURSDAY MORNING AND CONTINUE THROUGH THE DAY. SNOW ACCUMULATIONS WILL BE 4 TO 8 INCHES...ALONG THE PALMER DIVIDE AND IN THE FOOTHILLS SOUTHWEST OF DENVER SNOW ACCUMULATIONS OF 6 TO 10 INCHES WILL BE POSSIBLE. NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WILL CREATE AREAS OF BLOWING AND DRIFTING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ COZ035-042-043-048-050-051-271230- /O.CON.KBOU.SB.Y.0024.071227T1200Z-071228T0600Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-LOGAN COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN... CROOK...MERINO...STERLING...PEETZ...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 920 PM MST WED DEC 26 2007 ...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY... A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. SNOW WILL DEVELOP EARLY THURSDAY MORNING AND CONTINUE THROUGH THE DAY. SNOW ACCUMULATIONS WILL BE 3 TO 6 INCHES...IN AND NEAR THE FOOTHILLS SNOW ACCUMULATIONS OF 4 TO 8 INCHES WILL BE LIKELY. NORTH TO NORTHEAST WINDS OF 15 TO 25 MPH WILL CREATE AREAS OF BLOWING AND DRIFTING SNOW. VISIBILITY WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. $$
000 WWUS45 KBOU 271121 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 421 AM MST THU DEC 27 2007 ...MORE SNOW TODAY FOR NORTHEAST COLORADO... .A STRONG LOW PRESSURE SYSTEM ACROSS THE 4 CORNERS REGION WILL TRACK EAST ACROSS THE SOUTHERN COLORADO BORDER THROUGH THIS EVENING. SNOW HAS DEVELOPED EARLY THIS MORNING ACROSS THE FRONT RANGE AND URBAN CORRIDOR AND WILL BECOME WIDESPREAD ACROSS ALL OF NORTHEAST COLORADO BY LATER THIS MORNING. AS THE LOW MOVES INTO WESTERN KANSAS LATER TONIGHT...THE SNOW WILL DIMINISH FROM WEST TO EAST. DUE TO A LACK OF STRONG WINDS...THE SNOW AND BLOWING SNOW ADVISORIES HAVE BEEN CHANGED TO SNOW ADVISORIES. WIND SPEEDS WILL GENERALLY BE UNDER 20 MPH. COZ035-042-043-048-050-051-271930- /O.CAN.KBOU.SB.Y.0024.071227T1200Z-071228T0600Z/ /O.NEW.KBOU.SN.Y.0019.071227T1200Z-071228T0600Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-LOGAN COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN... CROOK...MERINO...STERLING...PEETZ...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 421 AM MST THU DEC 27 2007 ...SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... ...SNOW AND BLOWING SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. THE SNOW AND BLOWING SNOW ADVISORY HAS BEEN CANCELLED. SNOW WILL BECOME WIDESPREAD THIS MORNING AND CONTINUE THROUGH THIS EVENING. SNOW ACCUMULATIONS OF 3 TO 6 INCHES CAN BE EXPECTED. IN AND NEAR THE FOOTHILLS...SNOW ACCUMULATIONS OF 4 TO 8 INCHES CAN BE EXPECTED. VISIBILITIES WILL BE REDUCED TO LESS THAN A QUARTER OF A MILE AT TIMES DUE TO THE SNOW. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE SOME TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ COZ036-039>041-044>047-049-271930- /O.CON.KBOU.WS.W.0009.071227T1200Z-071228T0600Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- MORGAN COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- WASHINGTON COUNTY- INCLUDING...BAILEY...CENTRAL CITY...EVERGREEN...GEORGETOWN... IDAHO SPRINGS...WESTCREEK...ARVADA...BOULDER...GOLDEN... LAKEWOOD...LONGMONT...AURORA...BRIGHTON...CITY OF DENVER... DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON...FORDER... KARVAL...KUTCH...PUNKIN CENTER...AKRON...COPE...LAST CHANCE... OTIS 421 AM MST THU DEC 27 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL BECOME WIDESPREAD THIS MORNING AND CONTINUE THROUGH THIS EVENING BEFORE DIMINISHING OVERNIGHT. SNOW ACCUMULATIONS WILL BE 4 TO 8 INCHES. ALONG THE PALMER DIVIDE AND IN THE FOOTHILLS SOUTHWEST OF DENVER...SNOW ACCUMULATIONS OF 6 TO 9 INCHES WILL BE POSSIBLE. VISIBILITIES WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ COZ038-271930- /O.NEW.KBOU.SN.Y.0019.071227T1200Z-071228T0600Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- INCLUDING...FORT COLLINS...HEREFORD...LOVELAND...NUNN 421 AM MST THU DEC 27 2007 ...SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL CONTINUE THROUGH THIS EVENING THEN DIMINISHING OVERNIGHT. TOTAL SNOW ACCUMULATIONS OF 3 TO 6 INCHES IS POSSIBLE BY THIS EVENING. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE SOME TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ RTG/SWE
000 WWUS45 KBOU 271917 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1217 PM MST THU DEC 27 2007 ...SNOW TO CONTINUE TODAY FOR NORTHEAST COLORADO... .A STRONG LOW PRESSURE SYSTEM ACROSS THE 4 CORNERS REGION WILL CONTINUE TO TRACK EAST ACROSS THE SOUTHERN COLORADO BORDER THROUGH THIS EVENING. SNOW WILL CONTINUE ACROSS ALL OF NORTHEAST COLORADO THROUGH THIS EVENING. AS THE LOW MOVES INTO WESTERN KANSAS LATER TONIGHT...THE SNOW WILL DIMINISH FROM WEST TO EAST. COZ036-039>041-044>047-049-280330- /O.CON.KBOU.WS.W.0009.000000T0000Z-071228T0600Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- 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- 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- WASHINGTON COUNTY- INCLUDING...BAILEY...CENTRAL CITY...EVERGREEN...GEORGETOWN... IDAHO SPRINGS...WESTCREEK...ARVADA...BOULDER...GOLDEN... LAKEWOOD...LONGMONT...AURORA...BRIGHTON...CITY OF DENVER... DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON...FORDER... KARVAL...KUTCH...PUNKIN CENTER...AKRON...COPE...LAST CHANCE... OTIS 1217 PM MST THU DEC 27 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL CONTINUE THROUGH THIS EVENING BEFORE DIMINISHING OVERNIGHT. SNOW ACCUMULATIONS WILL BE 4 TO 8 INCHES. ALONG THE PALMER DIVIDE AND IN THE FOOTHILLS SOUTHWEST OF DENVER...SNOW ACCUMULATIONS OF 6 TO 9 INCHES WILL BE POSSIBLE. VISIBILITIES WILL BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ COZ035-038-042-043-048-050-051-280330- /O.CON.KBOU.SN.Y.0019.000000T0000Z-071228T0600Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-LOGAN COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...FORT COLLINS...HEREFORD...LOVELAND...NUNN... BRIGGSDALE...GROVER...PAWNEE BUTTES...RAYMER...STONEHAM...EATON... FORT LUPTON...GREELEY...ROGGEN...CROOK...MERINO...STERLING... PEETZ...JULESBURG...OVID...SEDGWICK...AMHERST...HAXTUN...HOLYOKE 1217 PM MST THU DEC 27 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL CONTINUE THROUGH THIS EVENING. SNOW ACCUMULATIONS OF 3 TO 6 INCHES CAN BE EXPECTED. IN AND NEAR THE FOOTHILLS...SNOW ACCUMULATIONS OF 4 TO 8 INCHES CAN BE EXPECTED. VISIBILITIES WILL BE REDUCED TO LESS THAN A QUARTER OF A MILE AT TIMES DUE TO THE SNOW. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE SOME TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ LESZCYNSKI
000 WWUS45 KBOU 272316 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 416 PM MST THU DEC 27 2007 ...SNOW CONTINUES ON THE PLAINS OF NORTHEAST AND EAST CENTRAL COLORADO... .THE STORM SYSTEM SWINGING ACROSS SOUTHERN AND EASTERN COLORADO LATE THIS THURSDAY AFTERNOON WILL CONTINUE TO PRODUCE LIGHT TO MODERATE SNOWFALL ON THE PLAINS OF NORTHEAST COLORADO AND OVER THE SOUTHERN FRONT RANGE FOOTHILLS AND PALMER DIVIDE THROUGH THIS EVENING. BY MIDNIGHT TONIGHT...EXPECT THE SNOWFALL TO END IN MOST AREAS AS THIS STORM SYSTEM MOVES AWAY FROM COLORADO AND ACROSS THE CENTRAL GREAT PLAINS. COZ036-280600- /O.CAN.KBOU.WS.W.0009.000000T0000Z-071228T0600Z/ /O.EXA.KBOU.SN.Y.0019.000000T0000Z-071228T0600Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING...BAILEY...CENTRAL CITY...EVERGREEN...GEORGETOWN... IDAHO SPRINGS...WESTCREEK 416 PM MST THU DEC 27 2007 ...SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. THIS ADVISORY REPLACES THE WINTER STORM WARNING THAT HAS BEEN CANCELLED. PERIODS OF LIGHT TO MODERATE SNOWFALL WILL CONTINUE THROUGH THIS EVENING IN THE FRONT RANGE FOOTHILLS FROM NORTHERN JEFFERSON COUNTY SOUTHWARD TO SOUTHWEST DOUGLAS COUNTY. NEW SNOW ACCUMULATIONS OF 1 TO 3 INCHES CAN BE EXPECTED IN THIS AREA. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE SOME TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ COZ035-038-280030- /O.CAN.KBOU.SN.Y.0019.000000T0000Z-071228T0600Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...FORT COLLINS...HEREFORD...LOVELAND...NUNN 416 PM MST THU DEC 27 2007 ...SNOW ADVISORY IS CANCELLED FOR THE NORTHERN FRONT RANGE FOOTHILLS AS WELL AS EASTERN LARIMER AND NORTHWEST WELD COUNTIES... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE SNOW ADVISORY. SNOWFALL WILL CONTINUE TO DECREASE THROUGH EARLY THIS EVENING ACROSS LARIMER AND NORTHWEST WELD COUNTIES. LITTLE IF ANY ADDITIONAL SNOW ACCUMULATION IS ANTICIPATED IN THESE AREAS. $$ COZ039>041-044>047-049-280600- /O.CON.KBOU.WS.W.0009.000000T0000Z-071228T0600Z/ BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- MORGAN COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- WASHINGTON COUNTY- INCLUDING...ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT... AURORA...BRIGHTON...CITY OF DENVER... DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON...FORDER... KARVAL...KUTCH...PUNKIN CENTER...AKRON...COPE...LAST CHANCE... OTIS 416 PM MST THU DEC 27 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING FOR CENTRAL AND SOUTHERN PORTIONS OF THE I-25 URBAN CORRIDOR... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. THIS WARNING INCLUDES THE GREATER DENVER METROPOLITAN AREA. SNOW WILL CONTINUE MODERATE AT TIMES THROUGH EARLY THIS EVENING BEFORE DIMINISHING BY MIDNIGHT. NEW SNOW ACCUMULATIONS OF 1 TO 3 INCHES CAN BE EXPECTED...WITH LOCALLY UP TO 4 INCHES ON THE PALMER DIVIDE IN DOUGLAS COUNTY. FURTHERMORE VISIBILITIES MAY BE REDUCED TO LESS THAN A QUARTER MILE AT TIMES DUE TO SNOW AND BLOWING SNOW. REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ COZ042-043-048-050-051-280600- /O.CON.KBOU.SN.Y.0019.000000T0000Z-071228T0600Z/ NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-LOGAN COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING...BRIGGSDALE...GROVER...PAWNEE BUTTES...RAYMER... STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN...CROOK... MERINO...STERLING...PEETZ...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 416 PM MST THU DEC 27 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING FOR PORTIONS OF THE NORTHEAST PLAINS OF COLORADO... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL CONTINUE THROUGH THIS EVENING WITH NEW SNOW ACCUMULATIONS OF 1 TO 4 INCHES BY LATE THIS EVENING. FURTHERMORE VISIBILITIES WILL BE REDUCED TO LESS THAN A HALF MILE AT TIMES DUE TO THE SNOW. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE SOME TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ BAKER
000 WWUS45 KBOU 280243 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 743 PM MST THU DEC 27 2007 COZ039>041-044>047-049-280345- /O.CAN.KBOU.WS.W.0009.000000T0000Z-071228T0600Z/ BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- MORGAN COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- WASHINGTON COUNTY- INCLUDING...ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT... AURORA...BRIGHTON...CITY OF DENVER... DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON...FORDER... KARVAL...KUTCH...PUNKIN CENTER...AKRON...COPE...LAST CHANCE... OTIS 743 PM MST THU DEC 27 2007 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE WINTER STORM WARNING. OCCASIONAL SNOW WILL CONTINUE THROUGH THE EVENING AND COME TO AN END BY MIDNIGHT. ADDITIONAL SNOW ACCUMULATIONS WILL BE AN INCH OR LESS. THEREFORE...THE WINTER STORM WARNING HAS BEEN CANCELED. $$ COZ036-042-043-048-050-051-280345- /O.CAN.KBOU.SN.Y.0019.000000T0000Z-071228T0600Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-LOGAN COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING...BAILEY...CENTRAL CITY...EVERGREEN...GEORGETOWN... IDAHO SPRINGS...WESTCREEK...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN... CROOK...MERINO...STERLING...PEETZ...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 743 PM MST THU DEC 27 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE SNOW ADVISORY. OCCASIONAL LIGHT SNOW WILL CONTINUE THROUGH THE EVENING AND COME TO AN END BY MIDNIGHT. ADDITIONAL SNOW ACCUMULATIONS WILL BE LESS THAN AN INCH. THEREFORE...THE SNOW ADVISORY HAS BEEN CANCELED. $$
What forecasters said that day
The local office's own words before this winter storm 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 winter storm warning went out at Dec 26, 3:30 PM MST, 4 hours 2 minutes earlier.
Area forecast discussion, Dec 26, 3:30 PM MST, 4 hours 2 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER CO
330 PM MST WED DEC 26 2007
.SHORT TERM...UPPER TROUGH CONTINUES TO MOVE INTO GREAT BASIN WITH
MID LEVEL MOISTURE MOVING ACROSS AREA. SNOW HAD DEVELOP ACROSS
PORTIONS OF WESTERN COLORADO...YET TO MOVE INTO CWA. AS TROUGH MOVES
INTO GREAT BASIN...SHOULD SEE INCREASE IN QG ASCENT AND LAPSE RATES
ACROSS MOUNTAINS. SNOW SHOULD SPREAD INTO WESTERN PORTIONS OF CWA AS
A RESULT. SOUTHWEST FLOW ALOFT NOT FAVORABLE FOR OROGRAPHICS...BUT
ASCENT AND MODEST LAPSE RATES SUPPORT SOME ACCUMULATION. LOCAL SNOW
MODELS YIELDING 1-3 INCHES...A BIT MORE IN ZONE 31. DECENT ASCENT
SHOULD ADD A FEW MORE INCHES. CURRENT SNOW AMOUNTS IN GRIDS FALL IN
LINE WITH THESE NUMBERS....WONT CHANGE MUCH. OROGRAPHICS REMAIN
UNFAVORABLE THROUGH THE DAY THURSDAY AS TROUGH MOVES ACROSS AREA.
UPPER LOW PROGGED TO SLIDE ACROSS SOUTHERN COLORADO...SO MAIN ASCENT
WILL BE SOUTH OF MOUNTAINS. THUS ONLY LIGHT AMOUNTS EXPECTED FOR
HIGH COUNTRY.
NOW FOR EASTERN COLORADO...AS TROUGH BEGINS TO MOVE EAST INTO
COLORADO OVERNIGHT...MODEL CONCENSUS SHOWING UPPER LOW OVER THE 4
CORNERS AROUND 12Z. SHOULD SEE SURFACE CYCLOGENESIS DEVELOPING
ACROSS NORTHEAST NEW MEXICO INTO THE TEXAS PANHANDLE. SURFACE FRONT
TO MOVE SOUTH ACROSS AREA SOMETIME AFTER 09Z. SHOULD SEE UPSLOPE
FLOW DEVELOP BEHIND FRONT...AND BEGIN TO INTENSIFY AFTER 12Z. SHOULD
SEE SOME SNOW DEVELOPING BEHIND FRONT AS ASCENT INCREASES. LATEST
MODELS SHOWING SURFACE LOW POSITION OVER NORTHEAST NEW MEXICO AT 18Z
THURSDAY...AND THE TEXAS PANHANDLE BY 00Z. THIS POSITION AND
MOVEMENT A BIT SLOWER AND FURTHER SOUTH THAN PREVIOUS RUNS. MODEL
SNOW ACCUMULATION SHOWING A GENERAL 4-8 INCHES FOR THE PLAINS...WITH
THE HIGHEST AMOUNTS ACROSS THE FAR EASTERN ZONES. STILL SOME CONCERN
ABOUT FINAL SURFACE LOW POSITION...WHICH WILL HAVE IMPACT ON SNOW
AMOUNTS. COULD END UP WITH ADVISORY NUMBERS FOR MUCH OF AREA...
EXCEPT FOR SMALL AREA OF HIGHER AMOUNTS FAR NORTHEAST ZONES. WITH
UNCERTAINTIES LURKING...WILL CONTINUE WITH WATCH.
.LONG TERM...MODELS SHOW THE UPPER TROUGH AXIS OVER EASTERN COLORADO
THURSDAY EVENING WITH A CLOSED LOW OVER THE NM/OK/TX/KS/CO BORDER
AREA. BY LATER IN THE EVENING...NORTHWESTERLY FLOW ALOFT IS PROGGED
OVER THE FORECAST AREA...BUT NOT VERY STRONG AT THE JET LEVEL.
FAIRLY WEAK ZONAL FLOW IS INDICATED FRIDAY INTO MID DAY SATURDAY.
BY SATURDAY NIGHT...NORTHWESTERLY FLOW ALOFT RETURNS AND IT
INCREASES SIGNIFICANTLY INTO THE EXTENDED PERIOD. THE QG VERTICAL
VELOCITY FIELD SHOW ALL DOWNWARD MOTION THURSDAY NIGHT THROUGH
SATURDAY MID DAY. THERE IS A BIT OF UPWARD MOTION PROGGED SATURDAY
AFTERNOON INTO EARLY EVENING. THE LOW LEVEL PRESSURE AND WIND
FIELDS SHOW A SURFACE CYCLONE CENTER JUST SOUTHEAST OF COLORADO 00Z
THURSDAY EVENING MIGRATING WELL EAST BY 06Z THURSDAY NIGHT.
NORTHERLY UPSLOPE FLOW IS PROGGED EARLY THURSDAY EVENING...BECOMING
NORTHWESTERLY LATER IN THE EVENING. OVERALL...NORMAL DIURNAL
BOUNDARY LAYER FLOW SHOULD PREVAIL THROUGH SATURDAY. FOR
MOISTURE...THE PLAINS HAVE DEEP MOISTURE OVER THEM THURSDAY
EVENING...WITH A GRADUAL DECREASE OVERNIGHT. THE MOUNTAINS MAINTAIN
SOME MOISTURE THROUGH THE PERIOD. THE PLAINS DRY OUT FRIDAY...BUT
THERE IS SOME MID AND UPPER LEVEL CLOUDINESS EXPECTED. QPF GRIDS
SHOW SOME LINGERING PRECIPITATION FOR THE PLAINS MAINLY THURSDAY
EVENING. THERE IS SOME MINIMAL AMOUNTS NOTED OVER THE MOUNTAINS
THROUGH SATURDAY. FOR POPS...WILL HAVE KEEP LIKELYS FOR MOST
AREAS EARLY THURSDAY EVENING...WITH A DECREASE THROUGH THE
NIGHT. WILL KEEP 10-30% IN THE MOUNTAINS THROUGH SATURDAY NIGHT
WITH GOOD MOISTURE BUT NOT GREAT MOUNTAIN TOP FLOW FOR OROGRAPHIC
ENHANCEMENT...NO SYNOPTIC SCALE LIFT HELP AND SOME WARMING CAUSING
POOR LAPSE RATES. FOR TEMPERATURES...FRIDAYS HIGHS WARM 0-1 C
OVER THURSDAYS. SATURDAYS WARM 1-2.5 C OVER FRIDAYS.
FOR THE LATER DAYS...SUNDAY THROUGH WEDNESDAY...MODELS HAVE STRONG
NORTHWESTERLY FLOW ALOFT OVER THE FORECAST AREA SUNDAY AND MONDAY
WITH A MEAN TROUGH COVERING MOST OF THE UNITED STATES AND DECENT
RIDGING OVER THE WEST COAST. THE UPPER RIDGE MOVES OUR WAY TUESDAY
AND WEDNESDAY. WILL LEAVE SOME MOUNTAIN POPS GOING SUNDAY INTO
MONDAY...THEN DRY TUESDAY AND WEDNESDAY. DRY FOR THE DOWNSLOPING
PLAINS ALL FOUR DAYS. TEMPERATURES MAY GET TO NORMAL OR ABOVE
TUESDAY AND WEDNESDAY.
&&
.AVIATION...SURFACE FRONT TO MOVE ACROSS AIRPORTS AFTER 09Z WITH
NORTHERLY SURFACE WINDS. MVFR CONDITIONS EXPECTED AS LIGHT SNOW
DEVELOPS AND CONTINUES THROUGH THE DAY. COULD SEE PERIODS OF IFR
CONDITIONS. SNOW ACCUMULATIONS OF AROUND 4 INCHES EXPECTED. SOME
UNCERTAINTY AS TO POSITION OF SURFACE LOW AND AMOUNT OF UPSLOPE.
&&
.BOU WATCHES/WARNINGS/ADVISORIES...WINTER STORM WATCH NORTHEAST
COLORADO PLAINS THURSDAY AND THURSDAY EVENING...ZONES 39-41 AND
43-51.
&&
DL/RJKHazardous weather outlook, Dec 26, 10:58 AM MST, 8 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1058 AM MST WED DEC 26 2007 COZ030>051-271300- 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- 1058 AM MST WED DEC 26 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SNOW SHOWERS WILL DEVELOP IN THE MOUNTAINS THIS AFTERNOON...BECOMING MORE WIDESPREAD TONIGHT WITH ACCUMULATIONS OF 1 TO 4 INCHES. ACROSS THE LOWER ELEVATIONS...LIGHT SNOW WILL DEVELOP LATER TONIGHT WITH ACCUMULATIONS OF UP TO AN INCH BY DAWN. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SNOW IS EXPECTED OVER THE PLAINS...FOOTHILLS...AND MOUNTAINS EAST OF THE DIVIDE ON THURSDAY...DECREASING THURSDAY EVENING. ACCUMULATIONS OF 3 TO 8 INCHES ARE POSSIBLE. NORTH WINDS UP TO 25 MPH WILL CAUSE SOME BLOWING AND DRIFTING SNOW OUT ON THE PLAINS. A CHANCE OF SNOW WILL CONTINUE OVER THE MOUNTAINS THROUGH THE WEEKEND INTO MONDAY WITH DRY CONDITIONS EXPECTED ON THE PLAINS THROUGH NEXT WEDNESDAY. TEMPERATURES LOOK TO BE BELOW NORMAL THROUGH MONDAY...THEN MODERATE SOMEWHAT INTO MID WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. DL/RJK
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 26, 7:32 PM MST | Snow and Blowing Snow Advisory | BOU | Boulder, Larimer, Logan, Phillips, Sedgwick, Weld | 9 hr |
| Dec 27, 4:21 AM MST | Snow Advisory | BOU | Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 5 more | 15 hr |
Nearby
Winter Storm Warnings in Colorado, 2007Every winter storm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.