Alert archive / Colorado / Winter Storm Warnings in 2016
Winter Storm Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Mar 17, 2016, 10:57 AM MDT for 15 counties in Colorado. It was in force for 31 hr. 60 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
- Mar 17, 2016, 10:57 AM MDT (16:57 UTC)
- Expired
- Mar 18, 2016, 5:59 PM MDT
- In force
- 31 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, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 54 km from the middle of the area, began a volume at 17:00 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 |
|---|---|---|---|
| Mar 17, 5:32 PM MDT | SNOW 4 | 1 N Estes Park, CO | |
| Mar 17, 5:45 PM MDT | SNOW 2.6 | 3 Ssw Boulder, CO | DAVID SKAGGS RESEARCH CENTER NOAA |
| Mar 17, 6:00 PM MDT | SNOW 0.4 | Denver Intl Airport, CO | |
| Mar 17, 6:00 PM MDT | SNOW 3.3 | 3 Sw Boulder, CO | |
| Mar 17, 6:16 PM MDT | SNOW 0.5 | 2 N Longmont, CO | |
| Mar 17, 7:45 PM MDT | SNOW 4.2 | 3 Ssw Boulder, CO | DAVID SKAGGS RESEARCH CENTER NOAA |
| Mar 17, 8:15 PM MDT | HEAVY SNOW 7 | 4 Ene Nederland, CO | |
| Mar 17, 8:15 PM MDT | HEAVY SNOW 8.5 | 2 E Allenspark, CO | |
| Mar 17, 8:20 PM MDT | HEAVY SNOW 9.5 | 5 Ne Ward, CO | |
| Mar 17, 9:00 PM MDT | SNOW 0.1 | 3 W Greeley, CO | |
| Mar 17, 9:00 PM MDT | SNOW 2.5 | Broomfield, CO | |
| Mar 17, 9:00 PM MDT | SNOW 4 | 5 E Boulder, CO | |
| Mar 17, 9:15 PM MDT | SNOW 3 | 2 S Erie, CO | |
| Mar 17, 9:20 PM MDT | SNOW 2.5 | 4 W Denver Intl Airport, CO | |
| Mar 17, 9:20 PM MDT | SNOW 2.9 | 4 W Denver Intl Airport, CO | |
| Mar 17, 9:25 PM MDT | SNOW 2.4 | 2 N Longmont, CO | |
| Mar 17, 9:25 PM MDT | SNOW 5.2 | 3 Ssw Boulder, CO | DAVID SKAGGS RESEARCH CENTER NOAA |
| Mar 17, 10:30 PM MDT | SNOW 2 | 2 N Longmont, CO | |
| Mar 17, 10:30 PM MDT | SNOW 4.5 | 3 Nne Eldorado Springs, CO | |
| Mar 17, 10:32 PM MDT | SNOW 5.3 | 3 Nnw Boulder, CO | |
| Mar 17, 10:50 PM MDT | SNOW 1 | Wnw Fort Collins, CO | |
| Mar 17, 11:41 PM MDT | SNOW 2.4 | 2 Nw Denver, CO | |
| Mar 17, 11:47 PM MDT | SNOW 4 | 1 Ssw Lafayette, CO | IN PAST 7 HOURS |
| Mar 18, 12:02 AM MDT | SNOW 3.4 | Denver Intl Airport, CO | |
| Mar 18, 12:20 AM MDT | SNOW 6.2 | 3 Ssw Boulder, CO | DAVID SKAGGS RESEARCH CENTER - NOAA |
| Mar 18, 3:21 AM MDT | SNOW 5.2 | Erie, CO | |
| Mar 18, 3:30 AM MDT | SNOW 7.1 | 3 Ssw Boulder, CO | DAVID SKAGGS RESEARCH CENTER - NOAA/NWS |
| Mar 18, 3:45 AM MDT | HEAVY SNOW 6 | 1 Ssw Lafayette, CO | BLOWING SNOW |
| Mar 18, 3:47 AM MDT | SNOW 5 | 1 Ssw Lafayette, CO | |
| Mar 18, 4:00 AM MDT | SNOW 4.7 | 1 Se Frederick, CO | |
| Mar 18, 4:30 AM MDT | SNOW 3 | 4 Nw Elizabeth, CO | |
| Mar 18, 5:00 AM MDT | HEAVY SNOW 6 | 9 Ene Dillon, CO | |
| Mar 18, 5:00 AM MDT | HEAVY SNOW 13 | 5 Sse Fraser, CO | |
| Mar 18, 5:05 AM MDT | SNOW 7.7 | 1 Nnw Louisville, CO | SOME BLOWING SNOW |
| Mar 18, 5:20 AM MDT | SNOW 7.1 | 3 Ssw Boulder, CO | DAVID SKAGGS RESEARCH CENTER - NOAA/NWS |
| Mar 18, 5:20 AM MDT | HEAVY SNOW 7.9 | 3 Ssw Boulder, CO | DAVID SKAGGS RESEARCH CENTER - NOAA/NWS |
| Mar 18, 5:45 AM MDT | SNOW 3.3 | 3 Nnw Castle Rock, CO | |
| Mar 18, 5:56 AM MDT | SNOW 7.9 | 1 Wsw Broomfield, CO | |
| Mar 18, 6:00 AM MDT | SNOW 1.6 | 10 Ne Pawnee Buttes, CO | |
| Mar 18, 6:00 AM MDT | SNOW 2 | 4 N Loveland, CO | |
| Mar 18, 6:00 AM MDT | SNOW 2.8 | 3 Ne Denver, CO | |
| Mar 18, 6:00 AM MDT | SNOW 4.2 | Denver Intl Airport, CO | |
| Mar 18, 6:00 AM MDT | SNOW 4.6 | Denver Intl Airport, CO | |
| Mar 18, 6:00 AM MDT | SNOW 5.8 | 4 E Fort Collins, CO | |
| Mar 18, 6:00 AM MDT | SNOW 5.8 | Genesee, CO | |
| Mar 18, 6:00 AM MDT | HEAVY SNOW 6.5 | 2 N Loveland, CO | |
| Mar 18, 6:00 AM MDT | HEAVY SNOW 6.6 | 2 Ne Thornton, CO | |
| Mar 18, 6:30 AM MDT | SNOW 5 | 7 Se Drake, CO | |
| Mar 18, 6:30 AM MDT | HEAVY SNOW 7.5 | 1 Sw Westminster, CO | |
| Mar 18, 6:30 AM MDT | HEAVY SNOW 7.7 | 5 Wsw Nederland, CO | |
| Mar 18, 6:41 AM MDT | SNOW 5 | Nw Black Hawk, CO | |
| Mar 18, 6:41 AM MDT | HEAVY SNOW 6 | Nw Black Hawk, CO | |
| Mar 18, 6:45 AM MDT | HEAVY SNOW 7.5 | 2 W Boulder, CO | |
| Mar 18, 6:55 AM MDT | HEAVY SNOW 6.5 | N Longmont, CO | |
| Mar 18, 6:55 AM MDT | HEAVY SNOW 7 | 1 W Northglenn, CO | |
| Mar 18, 7:00 AM MDT | SNOW 3 | 2 W Denver, CO | |
| Mar 18, 7:00 AM MDT | SNOW 3 | 3 W Conifer, CO | |
| Mar 18, 7:00 AM MDT | SNOW 3.5 | 7 Ene Virginia Dale, CO | |
| Mar 18, 7:00 AM MDT | SNOW 3.8 | 1 Se Denver, CO | |
| Mar 18, 7:00 AM MDT | SNOW 5 | 4 Sse Brookvale, 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 (KDEN), launched 12:00Z, 5.0 hours before the alert went out and 165 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
- 2054 m above ground
- 0-6 km bulk shear
- 89 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
176 WWUS45 KBOU 171657 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1057 AM MDT THU MAR 17 2016 ...SPRING STORM WILL BRING ACCUMULATING SNOW TO NORTHEAST AND NORTH CENTRAL COLORADO... SNOW WILL CONTINUE IN THE MOUNTAINS THROUGH TONIGHT...AND ALSO SPREAD SLOWLY EAST AND SOUTH ACROSS THE PLAINS THIS AFTERNOON AND EVENING. NARROW BANDS OF HEAVY SNOW WILL CONTINUE TO DEVELOP LATE THIS AFTERNOON AND EVENING. A SLOW MOVING STORM SYSTEM AND UPPER LEVEL JET STREAM OVER THE REGION WILL KEEP SNOW FALLING IN MOST AREAS OVERNIGHT THROUGH FRIDAY MORNING... BEFORE GRADUALLY DECREASING IN THE AFTERNOON. ROAD CONDITIONS MAY VARY CONSIDERABLY ACROSS SHORT DISTANCES CONSIDERING THE BANDS OF HEAVY SNOWFALL. AT THIS TIME...THE HEAVIER SNOW BANDS ARE EXPECTED TO SINK SOUTHWARD FROM THE NORTHERN TIER OF COLORADO COUNTIES THIS AFTERNOON INTO THE I-70 CORRIDOR BY LATE THIS AFTERNOON OR EVENING. COZ031-180100- /O.UPG.KBOU.WW.Y.0010.000000T0000Z-160318T0000Z/ /O.NEW.KBOU.WS.W.0004.160317T1657Z-160319T0000Z/ WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF... EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS... RABBIT EARS PASS 1057 AM MDT THU MAR 17 2016 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT FRIDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT FRIDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOW WILL CONTINUE TODAY AND THEN GRADUALLY DIMINISH TONIGHT. HOWEVER...SNOW SHOWERS...A FEW STILL HEAVY...WILL LINGER THROUGH FRIDAY. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 5 TO 10 INCHES ARE EXPECTED. * WIND/VISIBILITY...WEST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH WILL PRODUCE REDUCED VISIBILITY IN BLOWING SNOW. VISIBILITY DOWN TO ONE QUARTER MILE CAN BE EXPECTED AT TIMES. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ033-180100- /O.UPG.KBOU.WW.Y.0010.000000T0000Z-160318T0600Z/ /O.NEW.KBOU.WS.W.0004.160317T1657Z-160319T0000Z/ SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS 1057 AM MDT THU MAR 17 2016 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT FRIDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT FRIDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH FRIDAY MORNING. SNOW WILL GRADUALLY DECREASE LATE FRIDAY. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 6 TO 13 INCHES ARE EXPECTED. * WIND/VISIBILITY...WEST WINDS OF 15 TO 25 MPH WITH GUSTS TO 40 MPH WILL PRODUCE REDUCED VISIBILITY IN BLOWING SNOW. VISIBILITY OF HALF A MILE OR LESS AT TIMES CAN BE EXPECTED. WINDS WILL DECREASE TONIGHT. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SLOW TRAVEL...SNOW PACKED ROADS AND POOR VISIBILITY IN SPOTS DUE TO FALLING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ035-180100- /O.UPG.KBOU.WW.Y.0011.160318T0000Z-160319T0000Z/ /O.NEW.KBOU.WS.W.0004.160317T1657Z-160319T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 1057 AM MDT THU MAR 17 2016 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT FRIDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT FRIDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH FRIDAY MORNING. THE SNOW IS EXPECTED TO GRADUALLY DECREASE IN INTENSITY FRIDAY AFTERNOON. * SNOW ACCUMULATIONS...6 TO 14 INCHES. * WIND/VISIBILITY...NORTH WINDS UNDER 15 MPH. VISIBILITY WILL BE REDUCED TO LESS THAN ONE QUARTER MILE IN THE HEAVIER SNOW BANDS. * IMPACTS...SNOW COVERED ROADS ARE EXPECTED TO CREATE HAZARDOUS AND SLOW TRAVEL CONDITIONS THROUGH FRIDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ038-180100- /O.UPG.KBOU.WW.Y.0011.160318T0000Z-160319T0000Z/ /O.NEW.KBOU.WS.W.0004.160317T1657Z-160319T0000Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- INCLUDING THE CITIES OF...FORT COLLINS...HEREFORD...LOVELAND... NUNN 1057 AM MDT THU MAR 17 2016 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT FRIDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT FRIDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOW WILL BECOME MORE WIDESPREAD AND HEAVIER THROUGH THIS AFTERNOON AND EVENING. SNOW WILL CONTINUE INTO FRIDAY MORNING BEFORE DECREASING FRIDAY AFTERNOON. * SNOW ACCUMULATIONS...5 TO 10 INCHES...HEAVIEST UNDER THE MORE PERSISTENT SNOW BANDS. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * WIND...NORTH WINDS 10 TO 20 MPH. * IMPACTS...HEAVY SNOW BANDS MAY PRODUCE SLUSH AND SNOW ON ROADS THIS AFTERNOON. ALL ROADS WILL BECOME SNOW COVERED OVERNIGHT AND REMAIN THAT WAY THROUGH THE FRIDAY MORNING COMMUTE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU TRAVEL... KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ034-180100- /O.EXT.KBOU.WW.Y.0010.000000T0000Z-160319T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 1057 AM MDT THU MAR 17 2016 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM MDT FRIDAY... * TIMING...SNOW WILL BECOME MORE WIDESPREAD AND INCREASE IN INTENSITY LATE THIS AFTERNOON AND EVENING. SNOW SHOWERS WILL LIKELY PERSIST THROUGH FRIDAY. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 4 TO 10 INCHES ARE EXPECTED. * WIND/VISIBILITY...WEST WINDS OF 15 TO 25 MPH WITH GUSTS TO 40 MPH WILL PRODUCE REDUCED VISIBILITY IN BLOWING SNOW. VISIBILITY OF HALF A MILE OR LESS AT TIMES CAN BE EXPECTED. WINDS WILL DECREASE TONIGHT. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ036-039>045-180100- /O.CON.KBOU.WW.Y.0011.160318T0000Z-160319T0000Z/ 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- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- INCLUDING THE CITIES OF...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...BRIGGSDALE...GROVER...PAWNEE BUTTES...RAYMER... STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN...BRUSH... FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS...DEER TRAIL... LEADER 1057 AM MDT THU MAR 17 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT FRIDAY... * TIMING...AREAS OF LIGHT SNOW WILL BECOME MORE WIDESPREAD WITH BANDS OF HEAVY SNOW DEVELOPING LATE THIS AFTERNOON AND EVENING. THE SNOW WILL CONTINUE THROUGH FRIDAY MORNING BEFORE GRADUALLY DECREASING FRIDAY AFTERNOON. * SNOW ACCUMULATIONS...3 TO 6 INCHES...WITH AROUND 8 INCHES OF SNOW IN THE FOOTHILLS AND WHERE HEAVY SNOW BANDS PERSIST. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * IMPACTS...NARROW BANDS OF HEAVIER SNOWFALL MAY PRODUCE SLICK ROADS IN SPOTS DURING THE LATE AFTERNOON AND EVENING COMMUTE TODAY. SLUSHY AND SNOW COVERED ROADS WILL OCCUR TONIGHT THROUGH THE FRIDAY MORNING COMMUTE...CREATING HAZARDOUS AND SLOW TRAVEL CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
5 follow-up statements
005 WWUS45 KBOU 180059 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 659 PM MDT THU MAR 17 2016 ...SPRING STORM WILL BRING ACCUMULATING SNOW TO NORTHEAST AND NORTH CENTRAL COLORADO... SNOW WILL CONTINUE OVER MUCH OF THE FORECAST AREA NOW INTO FRIDAY. NARROW BANDS OF HEAVY SNOW WILL CONTINUE TO DEVELOP THIS EVENING. A SLOW MOVING STORM SYSTEM AND UPPER LEVEL JET STREAM OVER THE REGION WILL KEEP SNOW FALLING IN MOST AREAS OVERNIGHT THROUGH FRIDAY MORNING...BEFORE GRADUALLY DECREASING IN THE AFTERNOON. ROAD CONDITIONS WILL BECOME SNOW PACKED AND ICY THIS EVENING AND OVERNIGHT. THE HEAVIER SNOW BANDS ARE EXPECTED TO SINK SOUTHWARD ACROSS THE FORECAST AREA OVERNIGHT. COZ031-033-035-180900- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF... EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS... RABBIT EARS PASS...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS...ESTES PARK... GLENDEVEY...NEDERLAND...RED FEATHER LAKES 659 PM MDT THU MAR 17 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT FRIDAY... * TIMING...SNOW WILL CONTINUE OVERNIGHT INTO FRIDAY. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 5 TO 10 INCHES ARE EXPECTED. * WIND/VISIBILITY...WEST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH WILL PRODUCE REDUCED VISIBILITY IN BLOWING SNOW. VISIBILITY DOWN TO ONE QUARTER MILE CAN BE EXPECTED AT TIMES. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ038-180900- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- INCLUDING THE CITIES OF...FORT COLLINS...HEREFORD...LOVELAND... NUNN 659 PM MDT THU MAR 17 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT FRIDAY... * TIMING...SNOW WILL CONTINUE TONIGHT INTO FRIDAY...AND DECREASE BY AFTERNOON. * SNOW ACCUMULATIONS...5 TO 10 INCHES...HEAVIEST UNDER THE MORE PERSISTENT SNOW BANDS. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * WIND...NORTH WINDS 10 TO 20 MPH. * IMPACTS...ROADS WILL BECOME SNOW COVERED OVERNIGHT AND REMAIN THAT WAY THROUGH THE FRIDAY MORNING COMMUTE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU TRAVEL... KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ036-039>045-180900- /O.CON.KBOU.WW.Y.0011.000000T0000Z-160319T0000Z/ 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- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- INCLUDING THE CITIES OF...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...BRIGGSDALE...GROVER...PAWNEE BUTTES...RAYMER... STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN...BRUSH... FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS...DEER TRAIL... LEADER 659 PM MDT THU MAR 17 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT FRIDAY... * TIMING...SNOW WILL CONTINUE TONIGHT INTO FRIDAY...THEN GRADUALLYDECREASE BY AFTERNOON. * SNOW ACCUMULATIONS...3 TO 6 INCHES...WITH AROUND 8 INCHES OF SNOW IN THE FOOTHILLS AND WHERE HEAVY SNOW BANDS PERSIST. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * IMPACTS...SLUSHY AND SNOW COVERED ROADS ARE EXPECTED TONIGHT THROUGH THE FRIDAY MORNING COMMUTE...CREATING HAZARDOUS AND SLOW TRAVEL CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ034-180900- /O.CON.KBOU.WW.Y.0010.000000T0000Z-160319T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 659 PM MDT THU MAR 17 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT FRIDAY... * TIMING...SNOW WILL CONTINUE TONIGHT INTO FRIDAY...DECREASING DURING THE AFTERNOON. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 4 TO 10 INCHES ARE EXPECTED. * WIND/VISIBILITY...WEST WINDS OF 15 TO 25 MPH WITH GUSTS TO 40 MPH WILL PRODUCE REDUCED VISIBILITY IN BLOWING SNOW. VISIBILITY OF HALF A MILE OR LESS AT TIMES CAN BE EXPECTED. WINDS WILL DECREASE TONIGHT. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
545 WWUS45 KBOU 180635 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1235 AM MDT FRI MAR 18 2016 ...SPRING STORM WILL CONTINUE TO BRING SNOW TO NORTHEAST AND NORTH CENTRAL COLORADO... COZ036-039>041-181500- /O.UPG.KBOU.WW.Y.0011.000000T0000Z-160319T0000Z/ /O.EXA.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ 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- INCLUDING THE CITIES OF...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 1235 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT THIS EVENING. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...5 TO 10 INCHES...WITH UP TO A FOOT OF SNOW IN THE SOUTHERN FOOTHILLS AND ALONG THE PALMER DIVIDE. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * IMPACTS...SLUSHY AND SNOW COVERED ROADS WILL CONTINUE THROUGH THE MORNING COMMUTE...CREATING HAZARDOUS AND SLOW TRAVEL CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ031-033-035-181500- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF... EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS... RABBIT EARS PASS...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS...ESTES PARK... GLENDEVEY...NEDERLAND...RED FEATHER LAKES 1235 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 3 TO 8 INCHES ARE EXPECTED...MAINLY ALONG THE FRONT RANGE MOUNTAINS AND FOOTHILLS. * VISIBILITY...DOWN TO ONE QUARTER MILE CAN BE EXPECTED AT TIMES IN HEAVY SNOW. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ038-181500- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- INCLUDING THE CITIES OF...FORT COLLINS...HEREFORD...LOVELAND... NUNN 1235 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...3 TO 6 INCHES. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * WIND...NORTH WINDS 10 TO 20 MPH. * IMPACTS...ROADS WILL BECOME SNOW COVERED OVERNIGHT AND REMAIN THAT WAY THROUGH THE FRIDAY MORNING COMMUTE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU TRAVEL... KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ046-181500- /O.EXA.KBOU.WW.Y.0011.000000T0000Z-160319T0000Z/ NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- INCLUDING THE CITIES OF...AGATE...HUGO...LIMON...MATHESON 1235 AM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT THIS EVENING. * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...3 TO 6 INCHES. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * IMPACTS...SLUSHY AND SNOW COVERED ROADS WILL CONTINUE THROUGH THE MORNING...CREATING HAZARDOUS AND SLOW TRAVEL CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ042>045-181500- /O.CON.KBOU.WW.Y.0011.000000T0000Z-160319T0000Z/ NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER 1235 AM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...2 TO 5 INCHES. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * IMPACTS...ROADS WILL BE SLUSHY AND SNOW COVERED IN PLACES THIS MORNING...CREATING HAZARDOUS AND SLOW TRAVEL CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ034-181500- /O.CON.KBOU.WW.Y.0010.000000T0000Z-160319T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 1235 AM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 3 TO 8 INCHES ARE EXPECTED. * VISIBILITY...VISIBILITY OF HALF A MILE OR LESS AT TIMES CAN BE EXPECTED. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
556 WWUS45 KBOU 181422 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 822 AM MDT FRI MAR 18 2016 ...SPRING STORM WILL CONTINUE TO BRING SNOW TO NORTHEAST AND NORTH CENTRAL COLORADO... COZ031-033-181530- /O.CAN.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF... EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS... RABBIT EARS PASS...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS 822 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE WINTER STORM WARNING. CONDITIONS IMPROVING ENOUGH TO DROP THESE AREAS FROM WARNING CRITERIA...HOWEVER LIGHT SNOW WILL CONTINUE THROUGH THE MORNING. TRAVEL CONDITIONS WILL STILL BE HAZARDOUS DUE TO SLICK AND SNOW COVERED ROADS. $$ COZ035-182230- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 822 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 3 TO 8 INCHES ARE EXPECTED...MAINLY ALONG THE FRONT RANGE MOUNTAINS AND FOOTHILLS. * VISIBILITY...DOWN TO ONE QUARTER MILE CAN BE EXPECTED AT TIMES IN HEAVY SNOW. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ036-038>041-182230- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- 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- INCLUDING THE CITIES OF...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FORT COLLINS... HEREFORD...LOVELAND...NUNN...ARVADA...BOULDER...GOLDEN... LAKEWOOD...LONGMONT...AURORA...BRIGHTON...CITY OF DENVER... DENVER INTERNATIONAL AIRPORT...HIGHLANDS RANCH...LITTLETON... PARKER...CASTLE ROCK...ELBERT...FONDIS...KIOWA...LARKSPUR 822 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...5 TO 10 INCHES...WITH UP TO A FOOT OF SNOW IN THE SOUTHERN FOOTHILLS AND ALONG THE PALMER DIVIDE. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * IMPACTS...SLUSHY AND SNOW COVERED ROADS WILL CONTINUE THROUGH THE MORNING COMMUTE...CREATING HAZARDOUS AND SLOW TRAVEL CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ042>046-182230- /O.CON.KBOU.WW.Y.0011.000000T0000Z-160319T0000Z/ NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON 822 AM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...2 TO 5 INCHES. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVY SNOW BANDS. * IMPACTS...ROADS WILL BE SLUSHY AND SNOW COVERED IN PLACES THIS MORNING...CREATING HAZARDOUS AND SLOW TRAVEL CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ034-182230- /O.CON.KBOU.WW.Y.0010.000000T0000Z-160319T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 822 AM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW WILL CONTINUE THIS MORNING AND DECREASE DURING THE AFTERNOON. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 3 TO 8 INCHES ARE EXPECTED. * VISIBILITY...VISIBILITY OF HALF A MILE OR LESS AT TIMES CAN BE EXPECTED. * IMPACTS...TRAVELERS SHOULD BE PREPARED FOR HAZARDOUS WINTER DRIVING CONDITIONS INCLUDING SNOW PACKED ROADS AND POOR VISIBILITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
816 WWUS45 KBOU 181708 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1108 AM MDT FRI MAR 18 2016 ...STORM WINDING DOWN... COZ038>040-181815- /O.CAN.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- INCLUDING THE CITIES OF...FORT COLLINS...HEREFORD...LOVELAND... NUNN...ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT...AURORA... BRIGHTON...CITY OF DENVER...DENVER INTERNATIONAL AIRPORT... HIGHLANDS RANCH...LITTLETON...PARKER 1108 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE WINTER STORM WARNING. STORM TOTAL SNOWFALL GENERALLY RANGED BETWEEN 4 AND 10 INCHES....WITH AROUND 12 INCHES NEAR THE FOOTHILLS IN BOULDER COUNTY. ROAD CONDITIONS WILL CONTINUE TO IMPROVE WITH ONLY SCATTERED SNOW SHOWERS AND LIGHT SNOW ACCUMULATIONS LESS THAN ONE INCH THIS AFTERNOON. $$ COZ042>046-181815- /O.CAN.KBOU.WW.Y.0011.000000T0000Z-160319T0000Z/ 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- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...EATON...FORT LUPTON...GREELEY...ROGGEN... BRUSH...FORT MORGAN...GOODRICH...WIGGINS...BENNETT...BYERS... DEER TRAIL...LEADER...AGATE...HUGO...LIMON...MATHESON 1108 AM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE WINTER WEATHER ADVISORY. STORM TOTAL SNOWFALL GENERALLY RANGED BETWEEN 2 AND 6 INCHES. ROAD CONDITIONS WILL CONTINUE TO IMPROVE WITH ONLY SCATTERED SNOW SHOWERS AND LITTLE IF ANY ADDITIONAL SNOW ACCUMULATION. $$ COZ035-190000- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 1108 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH THE AFTERNOON...AND THEN GRADUALLY END THIS EVENING. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 1 TO 3 INCHES CAN BE EXPECTED THIS AFTERNOON. * VISIBILITY...DOWN TO ONE QUARTER MILE IN THE HEAVIER SNOW SHOWERS. * IMPACTS...ROADS MAY REMAIN SLUSHY OR SNOWPACKED IN AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ036-041-190000- /O.CON.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK...CASTLE ROCK...ELBERT... FONDIS...KIOWA...LARKSPUR 1108 AM MDT FRI MAR 18 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW SHOWERS WILL CONTINUE THIS AFTERNOON...AND THEN GRADUALLY END THIS EVENING. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL OF 1 TO 3 INCHES. * VISIBILITY...WILL BE REDUCED TO A QUARTER MILE OR LESS IN THE HEAVIER SNOW SHOWERS. * IMPACTS...ROADS MAY REMAIN SNOW COVERED OR SLUSHY IN SPOTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ COZ034-190000- /O.CON.KBOU.WW.Y.0010.000000T0000Z-160319T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 1108 AM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH THIS AFTERNOON...AND THEN GRADUALLY DECREASE THIS EVENING. * SNOW ACCUMULATIONS...ADDITIONAL SNOWFALL AMOUNTS OF 1 TO 3 INCHES ARE EXPECTED. * VISIBILITY...VISIBILITY OF HALF A MILE OR LESS AT TIMES CAN BE EXPECTED. * IMPACTS...ROADS MAY REMAIN SNOW PACKED OR SLUSHY IN SPOTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
580 WWUS45 KBOU 182359 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 559 PM MDT FRI MAR 18 2016 ...LIGHT SNOW SHOWERS CONTINUING TO DECREASE... COZ035-036-041-190100- /O.CAN.KBOU.WS.W.0004.000000T0000Z-160319T0000Z/ 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- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK...CASTLE ROCK...ELBERT... FONDIS...KIOWA...LARKSPUR 559 PM MDT FRI MAR 18 2016 ...WINTER STORM WARNING HAS EXPIRED... A FEW LIGHT SNOW SHOWERS WERE LINGERING LATE THIS AFTERNOON... EARLY THIS EVENING. NO ADDITIONAL SNOW ACCUMULATIONS ARE EXPECTED. $$ COZ034-190100- /O.CAN.KBOU.WW.Y.0010.000000T0000Z-160319T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 559 PM MDT FRI MAR 18 2016 ...WINTER WEATHER ADVISORY HAS EXPIRED... A FEW LIGHT SNOW SHOWERS WERE LINGERING LATE THIS AFTERNOON... EARLY THIS EVENING. NO ADDITIONAL SNOW ACCUMULATIONS ARE EXPECTED. $$
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 Mar 17, 10:35 AM MDT, 22 minutes earlier.
Area forecast discussion, Mar 17, 10:35 AM MDT, 22 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1035 AM MDT THU MAR 17 2016 .UPDATE... ISSUED AT 1018 AM MDT THU MAR 17 2016 UPDATED ALL PRODUCTS TO REFLECT SNOW AND CEILINGS MOVING IN SOONER. UPPER LEVEL JET WITH LEFT EXIT REGION OVER NW PORTIONS OF THE CWA...ESPECIALLY ZONES 31...33...34...38. SEEING SNOW CONTINUING TO FALL OVER THE MOUNTAINS AS WELL AS PORTIONS OF THE HIGHER FOOTHILLS NORTH OF I-70 AND AREAS IN LARIMER AND BOULDER COUNTIES. UPGRADED THE ADVISORY IN THESE AREAS TO A WARNING THROUGH TOMORROW AFTERNOON. UPPER LEVEL INSTABILITY WILL CONTINUE THROUGH THE FORECAST PERIOD WITH MULTIPLE SHORTWAVES EMBEDDED IN THE UPPER FLOW KEEPING A STEADY STREAM OF MOISTURE AND INSTABILITY TO THIS REGION. FURTHER SOUTH CEILINGS HAVE MOVED IN SOONER SO HAVE DROPPED TEMPERATURES 10-15 DEGREES TO REFLECT THIS. DO NOT EXPECT HIGHS TO GET OUT OF THE 30S FOR TODAY UNDER OVERCAST SKIES...ESPECIALLY ALONG THE FRONT RANGE AND DENVER. CURRENT MODELS STILL SHOWING POSSIBLE BANDING SETTING UP OVER THE PLAINS THROUGH TOMORROW MORNING. SOME MODELS BRINGING THESE BANDS FURTHER SOUTH THIS EVENING THAT COULD DROP 1-2 INCHES OF SNOW IN ONE HOUR. WITH COOLER TEMPERATURES THIS WILL CREATE THE OPPORTUNITY FOR INCREASED SNOWFALL UP TO 6 INCHES UNDER THESE BANDS...WITH FURTHER EXPECTED TO THE NORTH. NOT RULING OUT UPGRADING THE COUNTIES FURTHER SOUTH SUCH AS BOULDER AND DENVER TO A WARNING LATER ON TODAY WITH THE ONSET OF THESE POSSIBLE BANDS...BUT WILL LOOK FURTHER INTO IT AS THE DAY PROGRESSES. SO FAR HAVE UPDATED MOST GRIDS WITH NEW QPF AND SNOW AMOUNTS TO ACCOUNT FOR HIGHLIGHTS. && .SHORT TERM...(TODAY AND TONIGHT) ISSUED AT 355 AM MDT THU MAR 17 2016 STRONG NORTHWEST FLOW ALOFT WILL PREVAIL THROUGH TONIGHT. JET MAX OVER THE NORTHERN ROCKIES WILL DIVE SOUTH-SOUTHEAST AND BE OVER THE CENTRAL ROCKIES THIS AFTERNOON AND TONIGHT. THE MOIST NORTHWEST FLOW COMBINED WITH LAPSE RATES OF 6-9 C/KM WILL PRODUCE OROGRAPHIC SNOW OVER THE MOUNTAINS...MAINLY ALONG AND NORTH OF I-70. BY AFTERNOON...AS THE JET MOVES OVERHEAD...SNOW BANDS WILL SHIFT SOUTH. SNOW WILL CONTINUE THROUGH THIS EVENING FOR THE MOUNTAINS AND EXTENDED THE ADVISORY THROUGH THE EVENING. WILL ALSO ADD ZONE 34 TO THE ADVISORY. EXPECT A FEW BANDS OF SNOW TO MOVE OFF THE HIGHER TERRAIN OVER NORTHERN PARTS OF THE FRONT RANGE AND EASTERN PLAINS LATE THIS AFTERNOON. THUS INCREASE POPS FOR THIS. SURFACE LOW PRESSURE DEEPENS OVER THE SOUTHERN ROCKIES TODAY. THIS WILL CAUSE WINDS TO TURN NORTHERLY LATE THIS MORNING AND EARLY AFTERNOON. THIS WILL PULL COOLER AIR INTO THE AREA. LOWERED HIGHS INTO THE LOWER TO MID 40S FOR TODAY. WET BULB TEMPERATURES AT THE SURFACE WILL BE IN THE LOWER 30S. SO WHERE PRECIPITATION OCCURS...EXPECT IT TO BE SNOW OR QUICKLY CHANGE TO SNOW. WARM GROUND TEMPERATURES WILL INITIALLY SLOW ANY SNOW ACCUMULATION. SNOW IS EXPECTED TO SHIFT ONTO THE FRONT RANGE AND EASTERN PLAINS TONIGHT. UPSLOPE FLOW UP TO 700MB SHOULD PRODUCE AN AREA OF LIGHT TO MODERATE SNOW ALONG THE FRONT RANGE. IN ADDITION TO THIS...BANDS OF HEAVY SNOW ARE EXPECTED DUE TO LIFT FROM THE JET. SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR ARE EXPECTED UNDER THE HEAVIEST SNOW BANDS. THE HEAVY SNOW IS EXPECTED TO SHIFT SOUTH THROUGH THE NIGHT. DECIDED TO ISSUE A WINTER WEATHER ADVISORY FOR THE FOOTHILLS EAST ONTO THE NEAR BY PLAINS FOR TONIGHT AND INTO FRIDAY. .LONG TERM...(FRIDAY THROUGH WEDNESDAY) ISSUED AT 355 AM MDT THU MAR 17 2016 SLANTWISE CONVECTION AND POTENTIAL INSTABILITY GENERATED BY PASSING CYCLONICALLY CURVED 120KT JET WHICH IS PACKING AMPLE MOISTURE IS PROGGED TO BE OVER SWRN PORTIONS OF THE CWA BY FRIDAY MORNING. COMBINE THIS WITH SFC-TO-650 MB NELY UPSLOPE FLOW AND ITS LIKELY WE/LL SEE SNOWFALL...MOSTLY LIGHT...CONTINUING FRIDAY MORNING OVER AND ALONG THE FRONT RANGE MTNS. MODELS SHOW THE BEST OROGRAPHIC LIFT SHIFTING SOUTH TO SOUTHERN PORTIONS OF THE I-25 URBAN CORRIDOR AND SRN FOOTHILLS IN THE MORNING. MODELS INDICATE ANOTHER 0.10-0.20 INCH OF QPF FROM ROUGHLY THE CONTINENTAL DIVIDE EAST TO THE I-25 CORRIDOR FROM 12Z-18Z/FRIDAY...EQUATING TO ANOTHER 1-2 INCHES OF SNOW ADJACENT TO THE FOOTHILLS AND OVER THE PALMER DIVIDE..AND ANOTHER 2-3.5 INCHES OVER EAST SLOPES OF THE FRONT RANGE. AREAS WEST OF THE CONTINENTAL DIVIDE AND OUT ACROSS THE NORTHEAST CORNER OF THE STATE SHOULD SEE LITTLE ADDITIONAL ACCUMULATION. SAME GOES FOR THE FRONT RANGE...PALMER DIVIDE AND NEARBY PLAINS DURING THE AFTERNOON HOURS WHERE LITTLE ADDITIONAL ACCUMULATION IS ANTICIPATED WITH UPSLOPE FLOW AND JETSTREAM WINDS WEAKENING. MAY NOT SEE A TOTAL END TO SNOWFALL UNTIL LATE FRIDAY EVENING...BUT NEW AMTS ONLY MINOR. TEMPERATURES ON FRIDAY COLDEST READINGS SINCE EARLY IN FEBRUARY WITH OUR LAST BIG SNOWFALL ALONG THE FRONT RANGE. GUIDANCE INDICATING HIGHS IN THE LOW/MID 30S ON THE PLAINS AND ONLY SLIGHTLY COOLER 20S/LOWER 30S IN THE HIGH COUNTRY. SATURDAY...SHOULD SEE A DRAMATIC SHIFT TO DRY AND SUNNY CONDITIONS THOUGH TEMPERATURES ONLY SLIGHT WARMER DUE TO A CONTINUATION OF COLD AIR ADVECTION WITH A DEEP N-NWLY FLOW. HIGHS ON SATURDAY STILL 12- 15 DEG F BELOW AVERAGE FOR MOST AREAS. SUNDAY-MONDAY...MODELS SHOW A LARGE HIGH AMPLITUDE UPPER RIDGE PROPAGATING EASTWARD OVER COLORADO ON SUNDAY...THEN FLATTENING OUT ON MONDAY AS IT BACK BUILDS OVER THE GREAT BASIN. THIS WILL STILL KEEP THE CWA UNDER A WARM AND DRY NEAR ZONAL FLOW. THE RESULT WILL BE NEAR AVERAGE TEMPERATURES WITH PLENTY OF SUNSHINE ON SUNDAY...AND HIGHS ANOTHER 10-12 DEG F WARMER ON MONDAY WITH THE HELP OF DOWNSLOPE FLOW AND ADIABATIC COMPRESSION. REST OF THE WEEK...NEXT CHANGE IN OUR WEATHER BEGINS TUESDAY WITH AN UPPER TROUGH AND STRONG JET SWINGING ACROSS THE EASTERN GREAT BASIN. COULD SEE SNOW RETURNING TO THE NRN MTNS BY LATE IN THE DAY. HOWEVER THE BUSINESS END OF THIS UPPER TROUGH APPEARS TO IMPACT THE AREA DURING THE WEDNESDAY-THURSDAY TIME FRAME. GFS BRINGS THIS SYSTEM IN BEFORE THE ECMWF BUT BOTH MODELS SHOW PRECIP CHANCES INCREASING AND TEMPERATURES FALLING THRU THE PERIOD. STILL TOO EARLY TO PIN DOWN PRECIP/SNOW AMTS. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z FRIDAY AFTERNOON) ISSUED AT 1018 AM MDT THU MAR 17 2016 CURRENT IFR CONDITIONS TO CONTINUE THROUGH A MAJORITY OF THE TAF PERIOD WITH THE ONSET OF MULTIPLE FRONTS PUSHING LOWERED CEILINGS FROM THE NORTH AND NORTHEAST WITH SCATTERED SNOW SHOWERS THROUGH THE AFTERNOON. FLOW WILL REMAIN FROM THIS DIRECTION THROUGH THE DAY WITH ANOTHER PUSH IN FROM THE NE BEHIND A COLD FRON THAT IS PROGGED TO REACH AREA AIRPORTS BY 22-23Z. THIS WILL KEEP NE FLOW OVER THE AREA WITH SNOW MOVING IN BY THIS TIME OR SHORTLY AFTER. BANDING WILL BE POSSIBLE WITH AN UPPER LEVEL JET FEATURE FORECASTED TO MOVE SOUTH. THIS COULD BRING MODERATE SNOW TO DEN AND APA LATER THIS EVENING WITH 1-1.5 INCHES PER HOUR UNDER THE HEAVIER BANDS. STILL LOOKING AT 3-4 INCHES THIS EVENING WITH UP TO 6 INCHES IF A BAND SETS UP OVER THE AIRPORT. && .BOU WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY FROM 6 PM THIS EVENING TO 6 PM MDT FRIDAY FOR COZ036-039>045. WINTER STORM WARNING UNTIL 6 PM MDT FRIDAY FOR COZ031-033-035- 038. WINTER WEATHER ADVISORY UNTIL 6 PM MDT FRIDAY FOR COZ034. && UPDATE...BOWEN SHORT TERM...MEIER LONG TERM...BAKER AVIATION...BOWEN
Hazardous weather outlook, Mar 17, 5:08 AM MDT, 5 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 508 AM MDT THU MAR 17 2016 COZ030>051-180415- 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- 508 AM MDT THU MAR 17 2016 ...SNOW WILL CONTINUE IN MOUNTAINS TODAY AND SPREAD ONTO FRONT RANGE AND EASTERN PLAINS BY TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT MOUNTAIN SNOW WILL CONTINUE TODAY UNDER A MOIST NORTHWEST FLOW AND THEN DECREASE LATE TONIGHT. AN ADDITIONAL 4 TO 10 INCHES OF SNOW IS EXPECTED IN THE MOUNTAINS NORTH OF INTERSTATE 70. SNOW WILL SPREAD ONTO THE FRONT RANGE AND EASTERN PLAINS THIS AFTERNOON AND BECOME WIDESPREAD THIS EVENING. TWO TO FOUR INCHES OF SNOW IS EXPECTED ALONG THE FRONT AND ACROSS THE EASTERN PLAINS TONIGHT. LOCALLY HEAVY AMOUNTS MAY OCCUR UNDER BANDS OF HEAVY SNOW. THE SNOW WILL CAUSE ROADS TO BECOME SNOW COVERED AND SLIPPERY TONIGHT AND FOR THE FRIDAY MORNING COMMUTE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A STRONG JET STREAM AND A MOIST UPSLOPE FLOW WILL CONTINUE TO PRODUCE MAINLY LIGHT SNOWFALL OVER AND ALONG THE EAST FACE OF THE FRONT RANGE MOUNTAINS OF NORTHERN COLORADO THROUGH FRIDAY. MANY AREAS COULD SEE ANOTHER 1 TO 4 INCHES OF SNOW BY MIDDAY FRIDAY. TEMPERATURES WILL ALSO BE MUCH COLDER ON FRIDAY WITH THE EXTENSIVE CLOUD COVER AND LINGERING LIGHT PRECIPITATION. DRY AND WARMER WEATHER WILL THEN RETURN FOR THE WEEKEND AND PERSIST THROUGH MONDAY WITH A LARGE HIGH PRESSURE RIDGE OVER THE STATE. TEMPERATURES ON THE PLAINS BY MONDAY COULD BE AS MUCH 15 DEGREES ABOVE AVERAGE. BY TUESDAY ANOTHER PACIFIC STORM SYSTEM MOVING ACROSS THE GREAT BASIN COULD BRING SHOWERS OF RAIN AND SNOW TO THE MOUNTAINS AND HIGH VALLEYS BY LATE IN THE DAY. AREAS EAST OF THE MOUNTAINS WILL CONTINUE DRY AND VERY MILD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. MEIER/BAKER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 3:55 AM MDT | Winter Weather Advisory | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 9 more | 31 hr |
Nearby
Winter Storm Warnings in Colorado, 2016Every winter storm warning in 2016
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.