Alert archive / Colorado / Winter Storm Warnings in 2012
Winter Storm Warning 7, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Apr 14, 2012, 5:35 AM MDT for 4 counties in Colorado. It took effect at Apr 14, 2012, 6:00 PM MDT. It was in force for 11 hr. 1 report 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
- Apr 14, 2012, 5:35 AM MDT (11:35 UTC)
- In effect from
- Apr 14, 2012, 6:00 PM MDT
- Expired
- Apr 15, 2012, 5:21 AM MDT
- In force
- 11 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Grand County, CO, Jackson County, CO, Larimer County, CO
The radar
The Cheyenne radar (KCYS), 121 km from the middle of the area, began a volume at 11:34 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 |
|---|---|---|---|
| Apr 14, 6:54 PM MDT | SNOW 3.5 | 2 Nw Fraser, 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, 11.6 hours before the alert went out and 227 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3080 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
957 WWUS45 KBOU 141135 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 535 AM MDT SAT APR 14 2012 .A PACIFIC STORM SYSTEM WILL CONTINUE ORGANIZING OVER THE DESERT SOUTHWEST TODAY AND WILL TRACK NORTHEAST ACROSS COLORADO TONIGHT AND SUNDAY. SNOW SHOWERS ARE EXPECTED AT TIMES IN THE MOUNTAINS TODAY ALONG WITH THE CHANCE OF A FEW EMBEDDED THUNDERSTORMS IN THE AFTERNOON. LATER TONIGHT...MODERATE SNOW IS EXPECTED TO DEVELOP OVER THE NORTHERN MOUNTAINS AS THE MAIN UPPER LOW MOVES FROM NORTHEAST COLORADO INTO NEBRASKA. LIGHT TO MODERATE SNOWFALL IS EXPECTED TO CONTINUE THROUGH SUNDAY AS MOIST NORTHWESTERLY FLOW CONTINUES OVER THE NORTHERN MOUNTAINS. COZ031-033-141945- /O.UPG.KBOU.WS.A.0004.120415T0000Z-120416T0000Z/ /O.NEW.KBOU.WS.W.0007.120415T0000Z-120416T0000Z/ 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 535 AM MDT SAT APR 14 2012 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...SCATTERED SNOW SHOWERS WILL DEVELOP SATURDAY MORNING AND EVENTUALLY BECOME WIDESPREAD BY SATURDAY AFTERNOON. SNOWFALL MAY BECOME HEAVY AT TIMES SATURDAY NIGHT AND SUNDAY MORNING... AND THEN GRADUALLY DECREASE SUNDAY AFTERNOON. * SNOW ACCUMULATIONS...8 TO 14 INCHES OF SNOW ARE POSSIBLE BY LATE SUNDAY AFTERNOON...WITH THE GREATER TOTALS ON WEST AND NORTHWEST FACING SLOPES. * WINDS/VISIBILITY...WEST TO NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...MODERATE TO HEAVY SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. BLOWING SNOW MAY ALSO REDUCE VISIBILITIES TO NEAR ZERO AT TIMES IN OPEN AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TRAVEL MAY BECOME QUITE DIFFICULT IF NOT HAZARDOUS DUE TO SNOW AND BLOWING SNOW. HIGH COUNTRY TRAVELERS MAY WANT TO CONSIDER DELAYING TRAVEL UNTIL WEATHER AND ROAD CONDITIONS IMPROVE SUNDAY NIGHT OR MONDAY. IF YOU MUST TRAVEL...KEEP EXTRA FOOD...WATER...A FLASHLIGHT... AND DRY CLOTHING IN YOUR VEHICLE. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE AND WAIT FOR HELP TO ARRIVE. TRAVEL WILL BE EXTREMELY DANGEROUS AND IS DISCOURAGED DUE TO SNOW AND BLOWING SNOW CAUSING WHITEOUT CONDITIONS. CONSIDER DELAYING TRAVEL UNTIL CONDITIONS IMPROVE. IF YOU MUST TRAVEL...KEEP EXTRA FOOD...WATER...A FLASHLIGHT...AND DRY CLOTHING IN YOUR VEHICLE. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE AND WAIT FOR HELP TO ARRIVE. && $$ COZ034-141945- /O.UPG.KBOU.WS.A.0004.120415T0000Z-120416T0000Z/ /O.NEW.KBOU.WW.Y.0014.120415T0000Z-120416T0000Z/ 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 535 AM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...SNOW SHOWERS WILL DEVELOP SATURDAY MORNING AND EVENTUALLY BECOME WIDESPREAD BY SATURDAY AFTERNOON. LIGHT TO MODERATE SNOWFALL IS EXPECTED SATURDAY NIGHT AND SUNDAY MORNING...GRADUALLY DECREASING SUNDAY AFTERNOON. * SNOW ACCUMULATIONS...4 TO 8 INCHES OF SNOW ARE POSSIBLE BY LATE SUNDAY AFTERNOON. MOST OF THE SNOW WILL OCCUR NORTH OF THE INTERSTATE 70 CORRIDOR. * WINDS/VISIBILITY...WEST TO NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...MODERATE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TRAVEL MAY BECOME QUITE DIFFICULT IF NOT HAZARDOUS DUE TO SNOW AND BLOWING SNOW. HIGH COUNTRY TRAVELERS MAY WANT TO CONSIDER DELAYING TRAVEL UNTIL WEATHER AND ROAD CONDITIONS IMPROVE SUNDAY NIGHT OR MONDAY. IF YOU MUST TRAVEL...KEEP EXTRA FOOD...WATER...A FLASHLIGHT... AND DRY CLOTHING IN YOUR VEHICLE. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE AND WAIT FOR HELP TO ARRIVE. A WINTER WEATHER ADVISORY MEANS THAT SNOW...BLOWING SNOW...OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ030-032-141945- /O.NEW.KBOU.WW.Y.0014.120415T0000Z-120416T0000Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...GOULD...NORTH PARK...RAND...SPICER... WALDEN...DILLON...FRASER...GRANBY...GRAND LAKE... HOT SULPHUR SPRINGS...KREMMLING 535 AM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY. * TIMING...PERIODS OF SNOW ARE EXPECTED TODAY. SNOW IS EXPECTED TO INCREASE TONIGHT AND CONTINUE THROUGH MIDDAY SUNDAY. * SNOW ACCUMULATIONS...4 TO 8 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. * WINDS/VISIBILITY...WEST WINDS 15 TO 25 MPH MAY CAUSE SOME POOR VISIBILITIES IN SNOW. * IMPACTS...MODERATE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW...BLOWING SNOW...OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ035-141945- /O.NEW.KBOU.WW.Y.0014.120415T0000Z-120416T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 535 AM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY. * TIMING...SNOW IS EXPECTED TO DEVELOP TONIGHT AND BECOME MODERATE AT TIMES. SNOW WILL GRADUALLY TAPER OFF SUNDAY AFTERNOON. * SNOW ACCUMULATIONS...4 TO 8 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. THE SNOW WILL BE HEAVIEST OVER THE FOOTHILLS OF NORTHERN LARIMER COUNTY. * WINDS/VISIBILITY...WEST WINDS 15 TO 25 MPH WITH GUSTS UP TO 35 MPH MAY CAUSE AREAS OF POOR VISIBILITIES IN BLOWING SNOW. * IMPACTS...MODERATE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. BLOWING AND DRIFTING SNOW MAY RESTRICT VISIBILITIES AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW...BLOWING SNOW...OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
4 follow-up statements
339 WWUS45 KBOU 141855 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1255 PM MDT SAT APR 14 2012 .A PACIFIC STORM SYSTEM WILL CONTINUE OVER THE GREAT BASIN THIS AFTERNOON WILL TRACK NORTHEAST ACROSS COLORADO TONIGHT AND SUNDAY. SNOW SHOWERS ARE EXPECTED TO DEVELOP IN THE MOUNTAINS THIS AFTERNOON ALONG WITH A FEW EMBEDDED THUNDERSTORMS. TONIGHT... MODERATE TO HEAVY SNOW IS EXPECTED TO DEVELOP OVER THE NORTHERN MOUNTAINS AS THE MAIN UPPER LOW MOVES FROM NORTHEAST COLORADO INTO NEBRASKA. LIGHT TO MODERATE SNOWFALL IS EXPECTED TO CONTINUE THROUGH SUNDAY AS MOIST NORTHWESTERLY FLOW CONTINUES OVER THE NORTHERN MOUNTAINS. COZ031-033-150300- /O.CON.KBOU.WS.W.0007.120415T0000Z-120416T0000Z/ 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 1255 PM MDT SAT APR 14 2012 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * TIMING...SNOWFALL MAY BECOME HEAVY AT TIMES TONIGHT AND SUNDAY MORNING...THEN GRADUALLY DECREASE SUNDAY AFTERNOON. * SNOW ACCUMULATIONS...8 TO 14 INCHES OF SNOW ARE POSSIBLE BY LATE SUNDAY AFTERNOON...WITH THE GREATER TOTALS ON WEST AND NORTHWEST FACING SLOPES. * WINDS/VISIBILITY...WEST TO NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...MODERATE TO HEAVY SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. BLOWING SNOW MAY ALSO REDUCE VISIBILITIES TO NEAR ZERO AT TIMES IN OPEN AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TRAVEL MAY BECOME QUITE DIFFICULT IF NOT HAZARDOUS DUE TO SNOW AND BLOWING SNOW. HIGH COUNTRY TRAVELERS MAY WANT TO CONSIDER DELAYING TRAVEL UNTIL WEATHER AND ROAD CONDITIONS IMPROVE SUNDAY NIGHT OR MONDAY. IF YOU MUST TRAVEL...KEEP EXTRA FOOD...WATER...A FLASHLIGHT... AND DRY CLOTHING IN YOUR VEHICLE. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE AND WAIT FOR HELP TO ARRIVE. TRAVEL WILL BE EXTREMELY DANGEROUS AND IS DISCOURAGED DUE TO SNOW AND BLOWING SNOW CAUSING WHITEOUT CONDITIONS. CONSIDER DELAYING TRAVEL UNTIL CONDITIONS IMPROVE. IF YOU MUST TRAVEL...KEEP EXTRA FOOD...WATER...A FLASHLIGHT...AND DRY CLOTHING IN YOUR VEHICLE. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE AND WAIT FOR HELP TO ARRIVE. && $$ COZ030-032-150300- /O.CON.KBOU.WW.Y.0014.120415T0000Z-120416T0000Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...GOULD...NORTH PARK...RAND...SPICER... WALDEN...DILLON...FRASER...GRANBY...GRAND LAKE... HOT SULPHUR SPRINGS...KREMMLING 1255 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * TIMING...SNOW IS EXPECTED TO INCREASE TONIGHT AND CONTINUE THROUGH MIDDAY SUNDAY. * SNOW ACCUMULATIONS...4 TO 8 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. * WINDS/VISIBILITY...WEST WINDS 15 TO 25 MPH MAY CAUSE SOME POOR VISIBILITIES IN SNOW. * IMPACTS...MODERATE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ035-150300- /O.CON.KBOU.WW.Y.0014.120415T0000Z-120416T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 1255 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * TIMING...SNOW IS EXPECTED TO DEVELOP TONIGHT AND BECOME MODERATE AT TIMES. SNOW WILL GRADUALLY TAPER OFF BY SUNDAY AFTERNOON. * SNOW ACCUMULATIONS...4 TO 7 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. THE SNOW WILL BE HEAVIEST OVER THE FOOTHILLS OF NORTHERN LARIMER COUNTY. * WINDS/VISIBILITY...WEST WINDS 15 TO 25 MPH WITH GUSTS UP TO 35 MPH MAY CAUSE AREAS OF POOR VISIBILITIES IN BLOWING SNOW. * IMPACTS...MODERATE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. BLOWING AND DRIFTING SNOW MAY RESTRICT VISIBILITIES AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ034-150300- /O.CON.KBOU.WW.Y.0014.120415T0000Z-120416T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 1255 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * TIMING...SNOW WILL BECOME WIDESPREAD BY THIS EVENING. LIGHT TO MODERATE SNOWFALL IS EXPECTED TONIGHT AND SUNDAY MORNING...GRADUALLY DECREASING SUNDAY AFTERNOON. * SNOW ACCUMULATIONS...4 TO 10 INCHES OF SNOW CAN BE EXPECTED BY LATE SUNDAY AFTERNOON...HEAVIEST NORTH OF THE INTERSTATE 70 CORRIDOR. * WINDS/VISIBILITY...WEST TO NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...MODERATE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
537 WWUS45 KBOU 150056 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 656 PM MDT SAT APR 14 2012 .A STRONG STORM SYSTEM NEAR THE FOUR CORNERS WILL TRACK EAST/NORTHEAST INTO WESTERN KANSAS BY SUNDAY MORNING. THE STORM WILL THEN TURN NORTHEAST ACROSS NEBRASKA SUNDAY AFTERNOON. MOISTURE ON THE BACK SIDE OF THIS STORM WILL KEEP SNOW SHOWERS GOING ACROSS THE MOUNTAINS AND FOOTHILLS TONIGHT...WITH HEAVY SNOW AT TIMES THIS EVENING. THE SNOW SHOWERS WILL CONTINUE THROUGH MOST OF SUNDAY BEFORE TAPERING OFF BY EVENING. COZ031-033-150900- /O.CON.KBOU.WS.W.0007.000000T0000Z-120416T0000Z/ 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 656 PM MDT SAT APR 14 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW MAY BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...6 TO 14 INCHES OF SNOW CAN BE EXPECTED BY LATE SUNDAY AFTERNOON. * WINDS/VISIBILITY...WEST TO NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...THE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. HEAVY SNOW AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO LESS THAN ONE QUARTER MILE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TRAVEL WILL BE HAZARDOUS AND IS DISCOURAGED DUE TO SNOW AND BLOWING SNOW CAUSING REDUCED VISIBILITIES AND SLICK ROADS. CONSIDER DELAYING TRAVEL UNTIL CONDITIONS IMPROVE. && $$ COZ030-032-150900- /O.CON.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...GOULD...NORTH PARK...RAND...SPICER... WALDEN...DILLON...FRASER...GRANBY...GRAND LAKE... HOT SULPHUR SPRINGS...KREMMLING 656 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW MAY BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...3 TO 8 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. * WINDS/VISIBILITY...WEST WINDS 10 TO 20 MPH WITH A FEW GUSTS TO 30 MPH. VISIBILITIES MAY BE REDUCED TO ONE QUARTER MILE OR LESS DURING PERIODS OF HEAVY SNOW. * IMPACTS...SNOW MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ035-150900- /O.CON.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 656 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW MAY BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...3 TO 8 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. * WINDS/VISIBILITY...NORTH/NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS AROUND 35 MPH. VISIBILITIES MAY BE REDUCED TO ONE QUARTER MILE OR LESS DURING PERIODS OF HEAVY SNOW. * IMPACTS...SNOW MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ034-150900- /O.CON.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...BERTHOUD PASS...BRECKENRIDGE... EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE... EISENHOWER TUNNEL...INDIAN PEAKS...KENOSHA MOUNTAINS... MOUNT EVANS...WILLIAMS FORK MOUNTAINS...WINTER PARK 656 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW WILL BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...4 TO 10 INCHES OF SNOW CAN BE EXPECTED BY LATE SUNDAY AFTERNOON...WITH THE HEAVIEST AMOUNTS ABOVE 9500 FEET. * WINDS/VISIBILITY...NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
523 WWUS45 KBOU 150357 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 957 PM MDT SAT APR 14 2012 .A STRONG STORM SYSTEM OVER SOUTH CENTRAL COLORADO WILL TRACK EAST/NORTHEAST INTO WESTERN KANSAS BY SUNDAY MORNING. THE STORM WILL THEN TURN NORTHEAST ACROSS NEBRASKA SUNDAY AFTERNOON. MOISTURE ON THE BACK SIDE OF THIS STORM WILL KEEP SNOW SHOWERS GOING ACROSS THE MOUNTAINS AND FOOTHILLS TONIGHT...WITH HEAVY SNOW AT TIMES THIS EVENING. THE SNOW SHOWERS WILL CONTINUE THROUGH MOST OF SUNDAY BEFORE TAPERING OFF BY EVENING. COZ031-033-151200- /O.CON.KBOU.WS.W.0007.000000T0000Z-120416T0000Z/ 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 957 PM MDT SAT APR 14 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW MAY BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...6 TO 14 INCHES OF SNOW CAN BE EXPECTED BY LATE SUNDAY AFTERNOON. * WINDS/VISIBILITY...WEST TO NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...THE SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. HEAVY SNOW AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO LESS THAN ONE QUARTER MILE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TRAVEL WILL BE HAZARDOUS AND IS DISCOURAGED DUE TO SNOW AND BLOWING SNOW CAUSING REDUCED VISIBILITIES AND SLICK ROADS. CONSIDER DELAYING TRAVEL UNTIL CONDITIONS IMPROVE. && $$ COZ036-151200- /O.EXB.KBOU.WW.Y.0014.120415T0400Z-120415T1200Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK 957 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT SUNDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 6 AM MDT SUNDAY. * TIMING...SNOW SHOWERS WILL CONTINUE OVERNIGHT BEFORE GRADUALLY DECREASING SUNDAY MORNING. THE SNOW MAY BE HEAVY AT TIMES OVERNIGHT. * SNOW ACCUMULATIONS...5 TO 10 INCHES OF SNOW ARE EXPECTED BY SUNRISE ON SUNDAY WITH THE HEAVIEST AMOUNTS OVER JEFFERSON COUNTY. * WINDS/VISIBILITY...NORTH/NORTHWEST WINDS 10 TO 20 MPH. VISIBILITIES MAY BE REDUCED TO ONE QUARTER MILE OR LESS DURING PERIODS OF HEAVY SNOW. * IMPACTS...SNOW MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ030-032-151200- /O.CON.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...GOULD...NORTH PARK...RAND...SPICER... WALDEN...DILLON...FRASER...GRANBY...GRAND LAKE... HOT SULPHUR SPRINGS...KREMMLING 957 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW MAY BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...3 TO 8 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. * WINDS/VISIBILITY...WEST WINDS 10 TO 20 MPH WITH A FEW GUSTS TO 30 MPH. VISIBILITIES MAY BE REDUCED TO ONE QUARTER MILE OR LESS DURING PERIODS OF HEAVY SNOW. * IMPACTS...SNOW MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ035-151200- /O.CON.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 957 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW MAY BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...3 TO 8 INCHES OF SNOW ARE EXPECTED BY MIDDAY SUNDAY. * WINDS/VISIBILITY...NORTH/NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS AROUND 35 MPH. VISIBILITIES MAY BE REDUCED TO ONE QUARTER MILE OR LESS DURING PERIODS OF HEAVY SNOW. * IMPACTS...SNOW MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ034-151200- /O.CON.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ 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 957 PM MDT SAT APR 14 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH SUNDAY BEFORE GRADUALLY DECREASING LATE IN THE DAY. THE SNOW WILL BE HEAVY AT TIMES THIS EVENING. * SNOW ACCUMULATIONS...5 TO 10 INCHES OF SNOW CAN BE EXPECTED BY LATE SUNDAY AFTERNOON...WITH THE HEAVIEST AMOUNTS ABOVE 9500 FEET. * WINDS/VISIBILITY...NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
691 WWUS45 KBOU 151121 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 521 AM MDT SUN APR 15 2012 .A MOIST AND UNSTABLE AIRMASS REMAINS IN PLACE OVER THE STATE TODAY AS A STRONG STORM SYSTEM MOVES OVER THE CENTRAL PLAINS. NORTHERLY FLOW ASSOCIATED WITH THE DEPARTING STORM WILL HELP PRODUCE LIGHT TO MODERATE SNOW SHOWER ACTIVITY OVER THE MOUNTAINS TODAY. BY AFTERNOON...EMBEDDED THUNDERSTORMS MAY DEVELOP IN THE SNOW SHOWERS. THESE WILL PRODUCE LOCALLY HEAVY SNOW AMOUNTS BEFORE THE THIS LATEST SPRING STORM BEGINS TO WIND DOWN TONIGHT. COZ031-033-151930- /O.CAN.KBOU.WS.W.0007.000000T0000Z-120416T0000Z/ /O.EXA.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ 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 521 AM MDT SUN APR 15 2012 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR MODERATE TO HEAVY SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT THIS EVENING. THE WINTER STORM WARNING HAS BEEN CANCELLED. * TIMING...SNOW SHOWERS WILL CONTINUE THROUGH TODAY BEFORE GRADUALLY DECREASING THIS EVENING. THE SNOW WILL BE HEAVY AT TIMES IN THE AFTERNOON. * SNOW ACCUMULATIONS...4 TO 8 INCHES OF ADDITIONAL SNOW CAN BE EXPECTED TODAY...WITH THE HEAVIEST AMOUNTS ABOVE 9500 FEET. * WINDS/VISIBILITY...NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. A WINTER WEATHER ADVISORY MEANS THAT SNOW...BLOWING SNOW...OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ COZ036-151230- /O.CAN.KBOU.WW.Y.0014.000000T0000Z-120415T1200Z/ JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK 521 AM MDT SUN APR 15 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE WINTER WEATHER ADVISORY. SNOW SHOWERS OVERNIGHT PRODUCED A FEW INCHES OF ACCUMULATION... MAINLY ON GRASSY AND ELEVATED SURFACES. WINDS OVER THE FOOTHILLS HAVE BECOME NORTHWESTERLY EARLY THIS MORNING...AND THIS DOWNSLOPING FLOW WILL MAKE IT DIFFICULT FOR ADDITIONAL ACCUMULATING SNOW SHOWERS TO DEVELOP TODAY. $$ COZ035-151230- /O.CAN.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES 521 AM MDT SUN APR 15 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE WINTER WEATHER ADVISORY. SNOW SHOWERS OVERNIGHT PRODUCED A FEW INCHES OF ACCUMULATION... MAINLY ON GRASSY AND ELEVATED SURFACES. WINDS OVER THE FOOTHILLS HAVE BECOME NORTHWESTERLY EARLY THIS MORNING...AND THIS DOWNSLOPING FLOW WILL MAKE IT DIFFICULT FOR ADDITIONAL ACCUMULATING SNOW SHOWERS TO DEVELOP TODAY. $$ COZ030-032-034-151930- /O.CON.KBOU.WW.Y.0014.000000T0000Z-120416T0000Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 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...GOULD...NORTH PARK...RAND...SPICER... WALDEN...DILLON...FRASER...GRANBY...GRAND LAKE... HOT SULPHUR SPRINGS...KREMMLING...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 521 AM MDT SUN APR 15 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...SNOW SHOWERS WILL CONTINUE TODAY BEFORE DECREASING IN THE EVENING. THE SNOW WILL BE HEAVY AT TIMES THIS AFTERNOON. * SNOW ACCUMULATIONS...4 TO 8 INCHES OF SNOW CAN BE EXPECTED BY TODAY...WITH THE HEAVIEST AMOUNTS ABOVE 9500 FEET. LOCATIONS IN NORTH AND MIDDLE PARK MAY ONLY RECEIVE 3 TO 6 INCHES OF NEW SNOW. * WINDS/VISIBILITY...NORTHWEST WINDS OF 15 TO 25 MPH WILL PREVAIL WITH GUSTS TO 40 MPH ON THE MOUNTAIN PASSES. * IMPACTS...SNOWFALL MAY PRODUCE ICY AND SNOW COVERED ROADWAYS MAKING DRIVING HAZARDOUS ESPECIALLY OVER THE HIGH MOUNTAIN PASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ DANKERS
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 Apr 14, 4:50 AM MDT, 45 minutes earlier.
Area forecast discussion, Apr 14, 4:50 AM MDT, 45 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 450 AM MDT SAT APR 14 2012 .SHORT TERM...A COMPLICATED WEATHER PATTERN AHEAD OF US TODAY AS IT NOW APPEARS THAT THE UPPER LOW IS GOING TO RACE OVER THE STATE THIS AFTERNOON AND TONIGHT. THE BULK OF PRECIPITATION IS NOW GOING TO OCCUR AFTER THE UPPER LOW GETS TO OUR NORTHEAST...LATER TONIGHT AND SUNDAY. FOR TODAY...DRY SOUTHWESTERLY FLOW JUST DOWNSTREAM OF THE UPPER LOW IS GOING TO KEEP THE PLAINS DRY AS A SURFACE LOW RAPIDLY DEEPENS OVER THE EASTERN HALF OF THE STATE. THE WESTERN HALF OF THE STATE...INCLUDING THE MOUNTAINS WILL HAVE ENOUGH MOISTURE AND INSTABILITY ASSOCIATED WITH THE UPPER LOW TO PRODUCE SNOW AND ISOLATED THUNDERSTORMS THROUGH THE AFTERNOON. LATER THIS EVENING...AS THE UPPER LOW AND SURFACE LOW MOVE INTO NEBRASKA...NORTHERN COLORADO WILL COME UNDER THE RETURN CIRCULATION ON THE EAST SIDE OF THE SYSTEM. THIS WILL PRODUCE THE BEST DYNAMIC FORCING OF THE SYSTEM ALONG WITH THE MOISTURE NECESSARY TO PRODUCE MODERATE SNOW IN THE MOUNTAINS. ZONES 31 AND 33 WILL BE THE MAIN BENEFACTORS...BUT 34 MAY END UP TOO FAR SOUTH. ZONES 30 AND 32 MAY ALSO GET A DECENT SHOT OF SNOW THROUGH THE NIGHT. WILL UPGRADE THE WINTER STORM WATCH TO A WARNING FOR ZONES 31 AND 33 AND WILL ALSO ISSUE A WINTER WEATHER ADVISORY FOR ZONES 30...32...34 AND 35. ZONE 35 IS A BIT OF A QUESTION MARK...ESPECIALLY OVER THE SOUTHERN HALF. BUT THERE IS POTENTIAL FOR THE NORTH-FACING PARTS OF ZONE 35 TO PICK UP SOME DECENT SNOW DUE TO THE STRONG NORTHERLY COMPONENT OF THE MOIST FLOW. OVER THE PLAINS ANY MOISTURE ROTATING AROUND THE BACK SIDE OF THE UPPER LOW IS GOING TO BE FIGHTING A DOWNSLOPE COMPONENT WHILE TRYING TO PRODUCE PRECIPITATION. TEMPERATURES ACROSS THE PLAINS WILL BE MARGINAL CONCERNING THE CHANGE IN PRECIPITATION PHASE. THE PALMER DIVIDE WILL HAVE BETTER CHANCES FOR PRECIPITATION...FALLING AS SNOW. THE REASONING FOR THE FORECAST IS PRIMARILY BASED ON ISENTROPIC ANALYSES WHICH SHOW THE FAVORABLE UPGLIDE OVER THE MOUNTAINS MAXIMIZING TONIGHT...WHILE TODAY FEATURES STRONG DOWNGLIDE ACROSS THE EASTERN HALF OF THE STATE. THE Q-G DIAGNOSTICS PACKAGE ALSO SUPPORTS THE BEST MOIST LIFT OCCURRING OVER THE NORTHERN MOUNTAINS TONIGHT...WHILE TODAY FEATURES LIFTING OF AN INITIALLY DRY AIRMASS. .LONG TERM...AT 12Z SUNDAY MORNING...SHORT RANGE MODELS NOW SHOW THE CIRCULATION OF THE INCOMING UPPER LOW TO BE OVER CENTRAL NEBRASKA TO CENTRAL SOUTH DAKOTA. THAT IS FURTHER NORTH AND NORTHEAST THEN YESTERDAY'S 00Z MODELS RUNS INDICATED. THE UPPER TROUGH IS PROGGED TO PUSH ACROSS THE CWA SUNDAY AFTERNOON THROUGH SUNDAY EVENING. NORTHWESTERLY FLOW ALOFT IS PROGGED THE REST OF SUNDAY NIGHT AND MONDAY. THROUGH MONDAY NIGHT...THE FLOW ALOFT BECOMES WESTERLY. DOWNWARD QG VERTICAL VELOCITY IS PROGGED OVER THE CWA BY MID MORNING SUNDAY...CONTINUING THROUGH MONDAY NIGHT. AT 12Z THE LOW LEVEL PRESSURE FIELDS SHOW THE SURFACE CYCLONE TO BE OVER SOUTHEASTERN SOUTH DAKOTA. THE BOUNDARY LAYER PROGGS HAVE NORTH-NORTHWESTERLY WINDS OVER THE CWA ALL DAY SUNDAY. BY SUNDAY NIGHT...WELL INTO MONDAY A WEAK LOW LEVEL PRESSURE GRADIENT IS PROGGED FOR THE FORECAST AREA...THEN WEAK TROUGHING EAST OF THE MOUNTAINS IS PROGGED THROUGH MONDAY NIGHT. FOR MOISTURE...CURRENT MODELS SHOW LESS THAN YESTERDAY'S. MOISTURE IS PRETTY DEEP OVER THE CWA SUNDAY MORNING... THEN IT DECREASES QUITE A BIT DURING THE AFTERNOON...ESPECIALLY OVER THE PLAINS. MOISTURE SLOWLY DECREASES IN THE MOUNTAINS SUNDAY NIGHT. OVER THE PLAINS....MOISTURE IS RELEGATED TO THE MID AND UPPER LEVELS OF THE EASTERN HALF SUNDAY NIGHT. THERE IS SOME IN THE MID AN UPPER LEVELS ON MONDAY...THE NAM HAS A BIT MORE...BUT NOTHING SUBSTANTIAL. MONDAY NIGHT IS FAIRLY DRY...JUST A BIT OF MOISTURE MAINLY OVER THE MOUNTAINS. THE QPF FIELDS HAVE MINIMAL AMOUNTS OF MEASURABLE PRECIPITATION OVER THE CWA ON SUNDAY...NOTHING OVER A QUARTER OF AN INCH ANYWHERE FOR THE 12 HOUR PERIOD. MOST AREAS HAVE LESS THAN ONE TENTH. FOR SUNDAY NIGHT...THE NAM AND ECMWF HAVE A TAD OF MEASURABLE SNOW IN THE MOUNTAINS...HOWEVER...THE GFS HAS HIGHER AMOUNTS OF PRECIPITATION PROGGED OVER THE NORTH CENTRAL CWA. ON MONDAY...THERE IS A TINY BIT OVER THE MOUNTAINS AND EASTERN BORDER AREAS. THERE IS NOTHING MONDAY NIGHT. FOR POPS...WILL KEEP THEM HIGH IN THE MOUNTAINS SUNDAY...THEN GRADUALLY DECREASE THEM SUNDAY INTO MONDAY. FOR THE PLAINS...WILL LOWER POPS OVER THE FOOTHILLS AND WESTERN PLAINS ON SUNDAY FROM CURRENT GRIDS. BY SUNDAY AFTERNOON WILL GO WITH 20%S WEST TO 50%S EAST. ONLY 10-20%S SUNDAY NIGHT...OVER THE EASTERN PLAINS ONLY. MONDAY AND MONDAY NIGHT WILL BY DRY OVER THE PLAINS. CONCERNING PLAIN'S SNOW...MODELS HAVE BEEN GRADUALLY AND CONSISTENTLY WARMING TEMPERATURES FOR SUNDAY...SO NOT MUCH SNOW AT ALL. WILL KEEP SHORT TERM FORECASTER'S HIGHLIGHTS GOING THROUGH THE DAY SUNDAY...EVEN THOUGH THE LION'S SHARE OF SNOW WILL OCCUR IN THE TONIGHT PERIOD. FOR TEMPERATURES... SUNDAY'S HIGHS ARE 2-10 C COOLER THAN TODAY'S. THE BIGGEST DROP OVER THE NORTHEAST CORNER. MONDAY'S HIGHS ARE 1-3 C WARMER THAN SUNDAY'S. FOR THE LATER DAYS...TUESDAY THROUGH FRIDAY...ZONAL FLOW IS PROGGED FOR TUESDAY...WITH NORTHWESTERLY FLOW ALOFT TUESDAY NIGHT INTO WEDNESDAY. BACK TO WESTERLY FLOW ALOFT THE REST OF WEDNESDAY AND WEDNESDAY NIGHT. A WEAK UPPER TROUGH IS PROGGED TO CROSS COLORADO THURSDAY....THEN NORTHWESTERLY FLOW ALOFT DOMINATES THURSDAY NIGHT AND FRIDAY. THERE IS SOME MOISTURE AROUND TUESDAY AND AGAIN THURSDAY WITH THE TROUGH. NOTHING GREAT HOWEVER. TEMPERATURES GET ABOVE SEASONAL NORMALS ALL FOUR DAYS. && .AVIATION...IMPACTS FROM APPROACHING STORM ARE NOT EXPECTED UNTIL LATER THIS EVENING. CLOUDS WILL BE INCREASING THROUGH THE AFTERNOON WITH CIGS EXPECTED TO LOWER TO 6000-8000 FEET AGL AFTER 00Z. PERIODS OF RAIN ARE EXPECTED TO DEVELOP AFTER 00Z. AFTER 09Z TEMPERATURES MAY COOL ENOUGH FOR A MIX OF RAIN AND SNOW...OR A SLUSHY SNOWFALL TO DEVELOP. CIGS WILL DROP TO MVFR AFTER 06Z AND IFR WILL BE POSSIBLE AFTER 09Z DUE TO THE CHANGE TO FROZEN PRECIPITATION. STIFF NORTHERLY WINDS ARE EXPECTED TONIGHT BEHIND A COLD FRONT THAT WILL MOVE THROUGH IN THE EVENING. && .BOU WATCHES/WARNINGS/ADVISORIES... WINTER STORM WARNING FROM SATURDAY EVENING THROUGH SUNDAY AFTERNOON FOR COZ031-033. WINTER WEATHER ADVISORY FROM SATURDAY EVENING THROUGH SUNDAY AFTERNOON FOR COZ030-032-034-035. && SHORT TERM...KDRBY LONG TERM....RJK AVIATION...KDRBY
Hazardous weather outlook, Apr 13, 11:08 AM MDT, 18 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1108 AM MDT FRI APR 13 2012 COZ030>051-140515- 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- 1108 AM MDT FRI APR 13 2012 ...WINTER STORM WATCH REMAINS IN EFFECT FOR THE NORTH CENTRAL MOUNTAINS OF COLORADO SATURDAY NIGHT AND SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT A FEW SNOW SHOWERS OR THUNDERSTORMS MAY DEVELOP OVER THE MOUNTAINS LATE THIS AFTERNOON. ELSEWHERE CLOUDS WILL BE INCREASING WITH SEASONAL TEMPERATURES. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SNOW IS STILL EXPECTED TO DEVELOP AND SPREAD OVER THE MOUNTAINS OF NORTH CENTRAL COLORADO ON SATURDAY. SNOWFALL MAY BECOME HEAVY AT TIMES SATURDAY NIGHT AND SUNDAY MORNING...PARTICULARLY ON WEST AND NORTHWEST FACING SLOPES WHERE 7 TO 14 INCHES OF SNOW COULD ACCUMULATE BY SUNDAY AFTERNOON. GUSTY NORTHWEST WINDS MAY ALSO PRODUCE AREAS OF BLOWING SNOW ON THE MOUNTAIN PASSES DURING THE DAY SUNDAY POSSIBLY PRODUCING DIFFICULT TRAVEL CONDITIONS IN THESE AREAS. LOWER ELEVATIONS OF NORTHEAST COLORADO SHOULD STILL SEE SHOWERS DEVELOPING LATE IN THE DAY SATURDAY AND CONTINUING OVERNIGHT AND FOR PART OF SUNDAY. IT APPEARS MOST OF THIS SHOWER ACTIVITY WILL BE IN THE FORM OF RAIN. HOWEVER SATURDAY NIGHT AND SUNDAY MORNING WITH TEMPERATURES NEAR FREEZING...PRECIPITATION ALONG THE FRONT RANGE FOOTHILLS AND OVER THE PALMER DIVIDE MAY FALL AS SNOW. SNOW TOTALS ON THE PLAINS REMAIN QUITE UNCERTAIN AT THIS TIME. STAY TUNE FOR FURTHER CHANGES TO THIS FORECAST. DRIER AND WARMER CONDITIONS ARE LIKELY TO RETURN TO THE OUTLOOK REGION BENEATH A RIDGE OF HIGH PRESSURE NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. GIMMESTAD/BAKER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 5:35 AM MDT | Winter Weather Advisory | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 36 hr |
Nearby
Winter Storm Warnings in Colorado, 2012Every winter storm warning in 2012
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.