Alert archive / Colorado / Winter Storm Warnings in 2016
Winter Storm Warning 7, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Apr 28, 2016, 4:26 AM MDT for 10 counties in Colorado. It took effect at Apr 28, 2016, 6:00 PM MDT. It was in force for 23 hr. 12 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
- Apr 28, 2016, 4:26 AM MDT (10:26 UTC)
- In effect from
- Apr 28, 2016, 6:00 PM MDT
- Expired
- Apr 29, 2016, 4:52 PM MDT
- In force
- 23 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 94 km from the middle of the area, began a volume at 10:28 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 29, 6:00 AM MDT | SNOW 3 | 2 Sse Antero Reservoir, CO | |
| Apr 29, 7:00 AM MDT | SNOW 3 | 3 Ese Perry Park, CO | |
| Apr 29, 8:45 AM MDT | SNOW 2 | 3 W Conifer, CO | |
| Apr 29, 10:00 AM MDT | SNOW 2.7 | 3 Wsw Castle Rock, CO | |
| Apr 29, 10:00 AM MDT | SNOW 4 | N Fairplay, CO | |
| Apr 29, 10:07 AM MDT | SNOW 0.7 | 2 Sse Breckenridge, CO | |
| Apr 29, 10:50 AM MDT | SNOW 5 | E Franktown, CO | |
| Apr 29, 12:45 PM MDT | HEAVY SNOW 6 | N Fairplay, CO | |
| Apr 29, 2:00 PM MDT | HEAVY SNOW 7 | 3 S Pine Junction, CO | |
| Apr 29, 4:00 PM MDT | SNOW 4 | 1 Nnw Grand Lake, CO | |
| Apr 29, 4:15 PM MDT | SNOW 4.5 | 3 Nne Bailey, CO | |
| Apr 29, 4:15 PM MDT | HEAVY SNOW 8 | 3 Ese Perry Park, 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 00:00Z, 10.4 hours before the alert went out and 206 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
- 1796 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
994 WWUS45 KBOU 281026 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 426 AM MDT THU APR 28 2016 ...MORE SNOW HEADED FOR COLORADO... .A STRONG LOW PRESSURE SYSTEM ALOFT IS EXPECTED TO MOVE INTO THE FOUR CORNERS REGION BY THIS EVENING AND TRACK ACROSS COLORADO FRIDAY AND FRIDAY NIGHT. IN ADDITION...UPSLOPE CONDITIONS WILL BE INCREASING TODAY AND THEN CONTINUE THROUGH FRIDAY EVENING. MOST OF NORTHEAST AND NORTH CENTRAL COLORADO WILL EXPERIENCE RAIN OR SNOW WITH THIS SYSTEM. THE MOUNTAINS AND FOOTHILLS ARE EXPECTED TO SEE SIGNIFICANT SNOW ACCUMULATIONS...AS WELL AS THE PALMER DIVIDE SOUTH OF DENVER...WHILE THE PLAINS WILL RECEIVE SOME LIGHT SNOW OR A MIXTURE OF RAIN AND SNOW. COZ033>037-281830- /O.UPG.KBOU.WS.A.0009.160429T0000Z-160430T0600Z/ /O.NEW.KBOU.WS.W.0007.160429T0000Z-160430T0600Z/ 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- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... 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...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY... HARTSEL...LAKE GEORGE...SOUTH PARK 426 AM MDT THU APR 28 2016 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT MDT FRIDAY NIGHT... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT MDT FRIDAY NIGHT. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...PRECIPITATION WILL GRADUALLY SPREAD ACROSS THE WARNING AREA THIS AFTERNOON WITH HIGHER INTENSITIES EXPECTED TO OCCUR TONIGHT AND CONTINUE INTO FRIDAY EVENING. * SNOW ACCUMULATIONS...GENERALLY 10 TO 20 INCHES. FAVORED UPSLOPE AREAS EAST OF THE CONTINENTAL DIVIDE WILL SEE THE MOST SNOW...WITH TOTALS POSSIBLY APPROACHING TWO FEET. * WIND/VISIBILITY...WINDS WILL MOSTLY REMAIN LESS THAN 15 TO 20 MPH. VISIBILITIES WILL LIKELY DROP BELOW A HALF MILE AT TIMES IN THE HEAVIER SNOW. * IMPACTS...ACCUMULATING SNOW ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS WILL GET SNOW PACKED TONIGHT AND FRIDAY NIGHT. HOWEVER...DUE TO THE HIGH SUN ANGLE DURING THE DAY ON FRIDAY HIGHWAYS MAY NOT EXPERIENCE AS MUCH SNOW ACCUMULATION DURING THE DAYLIGHT HOURS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET AND ICE ARE EXPECTED OR OCCURRING. TRAVEL IS LIKELY TO BE SEVERELY IMPACTED. && $$ COZ041-281830- /O.NEW.KBOU.WS.A.0010.160429T0000Z-160430T0600Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 426 AM MDT THU APR 28 2016 ...WINTER STORM WATCH IN EFFECT FROM THIS EVENING THROUGH FRIDAY EVENING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM THIS EVENING THROUGH FRIDAY EVENING. * TIMING...PRECIPITATION WILL GRADUALLY SPREAD ACROSS THE WATCH AREA THIS AFTERNOON WITH HIGHER INTENSITIES EXPECTED TO OCCUR TONIGHT AND CONTINUE INTO FRIDAY EVENING. * SNOW ACCUMULATIONS...6 TO 12 INCHES ARE EXPECTED BY LATE FRIDAY EVENING. * WIND/VISIBILITY...NORTH WINDS 10 TO 15 MPH. VISIBILITIES WILL LIKELY DROP BELOW A HALF MILE AT TIMES IN THE HEAVIER SNOW. * IMPACTS...ACCUMULATING SNOW ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS WILL GET SLUSHY OR SNOW PACKED TONIGHT AND FRIDAY NIGHT. HOWEVER...DUE TO THE HIGH SUN ANGLE DURING THE DAY ON FRIDAY HIGHWAYS MAY NOT EXPERIENCE AS MUCH SNOW ACCUMULATION DURING THE DAYLIGHT HOURS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
5 follow-up statements
822 WWUS45 KBOU 281843 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1243 PM MDT THU APR 28 2016 ...MORE SNOW HEADED FOR COLORADO... .A STRONG LOW PRESSURE SYSTEM MOVING ACROSS THE FOUR CORNERS REGION TONIGHT WILL PROVIDE AMPLE MOISTURE AND SUFFICIENT UPSLOPE FLOW TO PRODUCE WIDESPREAD SNOWFALL IN THE MOUNTAINS...THE FRONT RANGE FOOTHILLS AND SOUTH PARK AREA IN NORTH CENTRAL COLORADO TONIGHT THROUGH FRIDAY EVENING. THE HIGHER TERRAIN SOUTH OF DENVER KNOWN AS THE PALMER DIVIDE WILL ALSO SEE MODERATE TO HEAVY SNOWFALL AT TIMES DURING THIS SAME PERIOD. THE NEIGHBORING PLAINS WILL LIKELY SEE LESS SNOW ACCUMULATION OR JUST A MIX OF RAIN AND SNOW DUE TO WARMER TEMPERATURES. LOWER ELEVATIONS WILL LIKELY SEE MELTING SNOW AS IT FALLS. COZ033>037-290245- /O.CON.KBOU.WS.W.0007.160429T0000Z-160430T0600Z/ 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- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... 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...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY... HARTSEL...LAKE GEORGE...SOUTH PARK 1243 PM MDT THU APR 28 2016 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT MDT FRIDAY NIGHT... * TIMING...RAIN AND SNOW TODAY WILL LIKELY CHANGE OVER TO ALL SNOW EARLY THIS EVENING AND BECOME HEAVY AT TIMES OVERNIGHT. THE HIGHER INTENSITY SNOWFALL IS EXPECTED TO OCCUR LATE TONIGHT AND FRIDAY MORNING. * SNOW ACCUMULATIONS...ANYWHERE FROM 10 TO 20 INCHES WITH THE HIGHER AMOUNTS EAST OF THE CONTINENTAL DIVIDE. * WIND/VISIBILITY...WINDS WILL MOSTLY REMAIN LESS THAN 20 MPH. VISIBILITIES WILL LIKELY DROP BELOW A HALF MILE AT TIMES IN THE HEAVIER SNOWFALL. * IMPACTS...WET SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY OR SNOW COVERED MAINLY DURING THE NIGHTTIME HOURS. MAY NOT SEE MUCH ACCUMULATION ON ROADS AND HIGHWAYS DUE TO THE HIGHER SUN ANGLE THIS TIME OF YEAR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT SNOW ACCUMULATION...POOR VISIBILITIES DUE TO HEAVY SNOWFALL AND POOR WINTER DRIVING CONDITIONS. HIGH COUNTRY TRAVEL IS LIKELY TO BE IMPACTED BY THIS STORM. && $$ COZ041-290245- /O.UPG.KBOU.WS.A.0010.160429T0000Z-160430T0600Z/ /O.NEW.KBOU.WW.Y.0017.160429T0000Z-160430T0600Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 1243 PM MDT THU APR 28 2016 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT MDT FRIDAY NIGHT... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT MDT FRIDAY NIGHT. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...RAIN AND SNOW WILL SPREAD ACROSS THE PALMER DIVIDE AREA OF DOUGLAS AND ELBERT COUNTIES EARLY THIS EVENING AND CHANGE TO ALL SNOW BY MID TO LATE EVENING. SNOW IS EXPECTED TO CONTINUE THROUGH FRIDAY EVENING...ALTHOUGH DURING THE DAYLIGHT HOURS ON FRIDAY PRECIPITATION COULD REVERT TO A RAIN-SNOW MIX DUE TO WARMER TEMPERATURES. * SNOW ACCUMULATIONS...ANYWHERE FROM 6 TO 12 INCHES BY LATE FRIDAY EVENING. * WIND/VISIBILITY...NORTH WINDS 10 TO 20 MPH. VISIBILITIES COULD DROP BELOW A HALF MILE AT TIMES WITH THE HEAVIEST SNOWFALL. * IMPACTS...WET HEAVY SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY AND POSSIBLY SNOW COVERED TONIGHT AND AGAIN FRIDAY EVENING. DUE TO THE HIGHER SUN ANGLE THIS TIME OF YEAR ROADS AND HIGHWAYS MAY NOT SEE MUCH IF ANY SNOW ACCUMULATION DURING THE DAYLIGHT HOURS ON FRIDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS OVERNIGHT AND LIMITED VISIBILITIES. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$ BAKER
913 WWUS45 KBOU 290237 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 837 PM MDT THU APR 28 2016 ...WINTER STORM MOVING INTO COLORADO TONIGHT... .A SPRING STORM SYSTEM WILL BE MOVING OVER COLORADO FROM THIS EVENING THROUGH FRIDAY NIGHT...CAUSING SIGNIFICANT SNOWFALL IN THE MOUNTAINS AND FRONT RANGE FOOTHILLS. THE PALMER DIVIDE...IN DOUGLAS COUNTY SOUTH OF DENVER...WILL ALSO SEE MODERATE TO HEAVY SNOWFALL AT TIMES DURING THIS SAME PERIOD. THE NORTHEAST COLORADO PLAINS WILL SEE LESS SNOW ACCUMULATION OR JUST A MIX OF RAIN AND SNOW DUE TO WARMER TEMPERATURES. COZ033>037-291045- /O.CON.KBOU.WS.W.0007.000000T0000Z-160430T0600Z/ 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- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... 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...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY... HARTSEL...LAKE GEORGE...SOUTH PARK 837 PM MDT THU APR 28 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT FRIDAY NIGHT... * TIMING...SNOW WILL BECOME MODERATE TO HEAVY AT TIMES OVERNIGHT. THE HIGHER INTENSITY SNOWFALL IS EXPECTED TO OCCUR LATE TONIGHT AND FRIDAY MORNING. * SNOW ACCUMULATIONS...ANYWHERE FROM 10 TO 20 INCHES WITH THE HIGHER AMOUNTS EAST OF THE CONTINENTAL DIVIDE. * WIND/VISIBILITY...WINDS WILL MOSTLY REMAIN LESS THAN 20 MPH. VISIBILITIES WILL DROP BELOW A HALF MILE AT TIMES IN THE HEAVIER SNOWFALL. * IMPACTS...WET SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY OR SNOW COVERED DURING THE NIGHTTIME HOURS. ACCUMULATION ON ROADS AND HIGHWAYS WILL BE LOWER DURING THE DAYLIGHT HOURS DUE TO THE HIGHER SUN ANGLE AT THIS TIME OF YEAR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT SNOW ACCUMULATION...POOR VISIBILITIES IN HEAVY SNOWFALL AND POOR WINTER DRIVING CONDITIONS ARE EXPECTED. HIGH COUNTRY TRAVEL IS LIKELY TO BE IMPACTED BY THIS STORM. && $$ COZ041-291045- /O.CON.KBOU.WW.Y.0017.000000T0000Z-160430T0600Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 837 PM MDT THU APR 28 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT FRIDAY NIGHT... * TIMING...RAIN AND SNOW WILL SPREAD ACROSS THE PALMER DIVIDE AREA OF DOUGLAS AND ELBERT COUNTIES THIS EVENING AND CHANGE TO ALL SNOW BY MIDNIGHT. SNOW IS EXPECTED TO CONTINUE THROUGH FRIDAY EVENING...ALTHOUGH DURING THE DAYLIGHT HOURS FRIDAY PRECIPITATION COULD REVERT TO A RAIN-SNOW MIX DUE TO WARMER TEMPERATURES. * SNOW ACCUMULATIONS...ANYWHERE FROM 6 TO 12 INCHES BY LATE FRIDAY EVENING. * WIND/VISIBILITY...NORTH WINDS 10 TO 20 MPH. VISIBILITIES COULD DROP BELOW A HALF MILE AT TIMES WITH THE HEAVIEST SNOWFALL. * IMPACTS...WET HEAVY SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY AND POSSIBLY SNOW COVERED TONIGHT AND AGAIN FRIDAY EVENING. DUE TO THE HIGHER SUN ANGLE THIS TIME OF YEAR ROADS AND HIGHWAYS MAY NOT SEE MUCH IF ANY SNOW ACCUMULATION DURING THE DAYLIGHT HOURS ON FRIDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS OVERNIGHT AND LIMITED VISIBILITIES. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$
269 WWUS45 KBOU 291017 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 417 AM MDT FRI APR 29 2016 ...SPRING STORM STILL APPROACHING COLORADO TODAY... .A SPRING STORM SYSTEM WILL BE MOVING INTO SOUTHEAST COLORADO BY LATER THIS AFTERNOON. THE SLOW MOVEMENT AND WEAKER EVOLUTION OF THIS STORM HAS DELAYED ANY SIGNIFICANT SNOWFALL IN THE MOUNTAINS AND FOOTHILLS DURING THE NIGHT. EXPECT SNOWFALL TO INCREASE LATER THIS MORNING AND CONTINUE THROUGH THIS EVENING. THE SNOW WILL DIMINISH OVERNIGHT. COZ033>037-291830- /O.CON.KBOU.WS.W.0007.000000T0000Z-160430T0600Z/ 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- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... 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...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY... HARTSEL...LAKE GEORGE...SOUTH PARK 417 AM MDT FRI APR 29 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * TIMING...SNOW WILL BECOME MODERATE TO HEAVY AT TIMES BY LATER THIS MORNING AND CONTINUE THROUGH THIS EVENING. THE HIGHER INTENSITY SNOWFALL IS EXPECTED TO OCCUR BY LATER THIS MORNING. * SNOW ACCUMULATIONS...ANYWHERE FROM 5 TO 10 INCHES WITH THE HIGHER AMOUNTS EAST OF THE CONTINENTAL DIVIDE. * WIND/VISIBILITY...WINDS WILL MOSTLY REMAIN LESS THAN 20 MPH. VISIBILITIES WILL DROP BELOW A HALF MILE AT TIMES IN THE HEAVIER SNOWFALL. * IMPACTS...WET SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY OR SNOW COVERED DURING THE NIGHTTIME HOURS. ACCUMULATION ON ROADS AND HIGHWAYS WILL BE LOWER DURING THE DAYLIGHT HOURS DUE TO THE HIGHER SUN ANGLE AT THIS TIME OF YEAR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT SNOW ACCUMULATION...POOR VISIBILITIES IN HEAVY SNOWFALL AND POOR WINTER DRIVING CONDITIONS ARE EXPECTED. HIGH COUNTRY TRAVEL IS LIKELY TO BE IMPACTED BY THIS STORM. && $$ COZ041-291830- /O.CON.KBOU.WW.Y.0017.000000T0000Z-160430T0600Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 417 AM MDT FRI APR 29 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * TIMING...SNOW IS EXPECTED TO CONTINUE THROUGH THIS EVENING...THEN DIMINISH OVERNIGHT. * SNOW ACCUMULATIONS...ANYWHERE FROM 3 TO 7 INCHES BY LATER THIS EVENING. * WIND/VISIBILITY...NORTHEAST WINDS 10 TO 15 MPH. VISIBILITIES COULD DROP BELOW A HALF MILE AT TIMES WITH THE HEAVIEST SNOWFALL. * IMPACTS...WET HEAVY SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY AND POSSIBLY SNOW COVERED DURING THE DAY AND THIS EVENING. DUE TO THE HIGHER SUN ANGLE THIS TIME OF YEAR ROADS AND HIGHWAYS MAY NOT SEE MUCH IF ANY SNOW ACCUMULATION DURING THE DAYLIGHT HOURS ON FRIDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS OVERNIGHT AND LIMITED VISIBILITIES. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$
402 WWUS45 KBOU 291909 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 109 PM MDT FRI APR 29 2016 ...SPRING STORM CONTINUES TO IMPACT NORTH CENTRAL AND NORTHEAST COLORADO... .A MOISTURE LADEN STORM SYSTEM WILL CONTINUE TO PRODUCE WIDESPREAD PRECIPITATION ACROSS NORTH CENTRAL AND NORTHEAST COLORADO. AREAS GENERALLY ABOVE 6000 FEET...SUCH AS THE FRONT RANGE MOUNTAINS AND FOOTHILLS AND FROM THE PALMER DIVIDE EASTWARD ACROSS ELBERT AND LINCOLN COUNTIES WILL SEE 1 TO 1.5 INCH PER HOUR SNOWFALL RATES FOR THE REMAINDER OF THE AFTERNOON. WHEREAS AT LOWER ELEVATIONS WHERE TEMPERATURES REMAIN ABOVE FREEZING...MOST OF THE FALLEN SNOW HAS MELTED UPON IMPACT WITH THE GROUND. ADDITIONAL SNOW ACCUMULATION IS LIKELY OVER THE HIGHER TERRAIN INCLUDING THE PALMER DIVIDE THROUGH THIS EVENING. THE HEAVIEST SNOW TOTALS IN THE MOUNTAINS WILL BE FOUND EAST OF THE CONTINENTAL DIVIDE. LITTLE SNOW ACCUMULATIONS IS EXPECTED ON MOST ROADWAYS AND HIGHWAYS. COZ033>037-300315- /O.CON.KBOU.WS.W.0007.000000T0000Z-160430T0600Z/ 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- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... 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...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY... HARTSEL...LAKE GEORGE...SOUTH PARK 109 PM MDT FRI APR 29 2016 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * TIMING...SNOWFALL MODERATE TO HEAVY AT TIMES WILL CONTINUE THROUGH THIS EVENING...MAINLY EAST OF THE CONTINENTAL DIVIDE. THE HIGHER INTENSITY SNOWFALL IS EXPECTED THIS AFTERNOON WITH AN INCREASE IN UPSLOPE FLOW. * SNOW ACCUMULATIONS...ANYWHERE FROM 5 TO 12 INCHES WITH THE HIGHER AMOUNTS EAST OF THE CONTINENTAL DIVIDE ABOVE 7000 FEET. * WIND/VISIBILITY...WINDS WILL MOSTLY REMAIN LESS THAN 20 MPH. VISIBILITIES WILL DROP BELOW A HALF MILE AT TIMES IN THE HEAVIER SNOWFALL AND FOG. * IMPACTS...WET SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS WILL MOSTLY BE WET AND SLUSHY...BUT SOME AREAS SNOW COVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT SNOW ACCUMULATION...POOR VISIBILITIES IN SNOW AND FOG...AND POOR WINTER DRIVING CONDITIONS. && $$ COZ041-300315- /O.CON.KBOU.WW.Y.0017.000000T0000Z-160430T0600Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 109 PM MDT FRI APR 29 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * TIMING...SNOW WILL CONTINUE THROUGH THIS EVENING...THEN DIMINISH OVERNIGHT. * SNOW ACCUMULATIONS...ANYWHERE FROM 4 TO 9 INCHES BY LATE THIS EVENING. * WIND/VISIBILITY...NORTHEAST WINDS 10 TO 15 MPH. VISIBILITIES COULD DROP BELOW A QUARTER MILE AT TIMES WITH THE HEAVIEST SNOWFALL AND FOG. * IMPACTS...WET SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY AND POSSIBLY SNOW COVERED...MAINLY ON SMALLER LESS TRAVELED ROADWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SLUSHY AND POSSIBLY SNOW COVERED ROADS AS WELL AS LIMITED VISIBILITIES DUE TO SNOW AND FOG. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$ BAKER
899 WWUS45 KBOU 292252 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 452 PM MDT FRI APR 29 2016 ...SPRING STORM STARTING TO WIND DOWN OVER NORTHEAST COLORADO... .THE STORM SYSTEM MOVING OVER COLORADO TODAY HAS BEEN PRODUCING MODERATE TO HEAVY SNOWFALL AMOUNTS OVER THE PALMER DIVIDE AND LIGHT ACCUMULATIONS OF SNOW ELSEWHERE OVER THE NORTH CENTRAL AND NORTHEAST PART OF THE STATE. SNOW ACCUMULATIONS AS HIGH AS 14 INCHES HAVE BEEN RECEIVED FROM PARTS OF EASTERN ELBERT COUNTY. IN THE FOOTHILLS...4 TO 8 INCHES OF SNOW HAVE BEEN REPORTED...AND ON THE PLAINS...ACCUMULATIONS HAVE BEEN LESS THAN TWO INCHES...PRIMARILY ON GRASSY AREAS. ROADWAYS HAVE REMAINED BARE AND WET...EVEN IN THE MOUNTAINS. THE STORM WILL CONTINUE ITS SLOW EASTWARD TRACK THIS EVENING...PRODUCING LIGHT SNOW AMOUNTS EARLY IN THE EVENING. LATER TONIGHT...SNOW WILL BE COMING TO AN END AS THE UPPER LOW MOVES INTO KANSAS AND NEBRASKA. COZ033>037-300600- /O.CAN.KBOU.WS.W.0007.000000T0000Z-160430T0600Z/ /O.EXA.KBOU.WW.Y.0017.000000T0000Z-160430T0600Z/ 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- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... 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...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY... HARTSEL...LAKE GEORGE...SOUTH PARK 452 PM MDT FRI APR 29 2016 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR ADDITIONAL SNOWFALL...WHICH IS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT. THE WINTER STORM WARNING HAS BEEN CANCELLED. * TIMING...SNOW WILL CONTINUE THROUGH THIS EVENING...THEN DIMINISH OVERNIGHT. * SNOW ACCUMULATIONS...ADDITIONAL ACCUMULATIONS OF 2 TO 4 INCHES THROUGH THIS EVENING. * WIND/VISIBILITY...NORTHEAST WINDS 10 TO 15 MPH. VISIBILITIES COULD DROP BELOW A HALF MILE AT TIMES DUE TO THE COMBINATION OF SNOW AND FOG. * IMPACTS...ROADWAYS WILL HAVE A LOT OF WATER ON THEM LEADING TO POOR VISIBILITY DUE TO SPLASHBACK FROM OTHER CARS. ROADS MAY ALSO BECOME SLUSHY AND POSSIBLY SNOWPACKED...MAINLY ON SMALLER LESS TRAVELED ROADWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SLUSHY AND POSSIBLY SNOW COVERED ROADS AS WELL AS LIMITED VISIBILITIES DUE TO SNOW AND FOG. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$ COZ041-300600- /O.CON.KBOU.WW.Y.0017.000000T0000Z-160430T0600Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 452 PM MDT FRI APR 29 2016 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * TIMING...SNOW WILL CONTINUE THROUGH THIS EVENING...THEN DIMINISH OVERNIGHT. * SNOW ACCUMULATIONS...UP TO 3 INCHES ADDITIONAL ACCUMULATION BY LATE THIS EVENING. * WIND/VISIBILITY...NORTHEAST WINDS 10 TO 15 MPH. VISIBILITIES COULD DROP BELOW A HALF MILE AT TIMES DUE TO SNOW AND FOG. * IMPACTS...WET SNOW ACCUMULATING ON BRANCHES AND POWER LINES COULD LEAD TO TREE DAMAGE AND POWER OUTAGES. ROADS MAY BECOME SLUSHY AND POSSIBLY SNOW COVERED...MAINLY ON SMALLER LESS TRAVELED ROADWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SLUSHY AND POSSIBLY SNOW COVERED ROADS AS WELL AS LIMITED VISIBILITIES DUE TO SNOW AND FOG. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$
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 28, 4:04 AM MDT, 22 minutes earlier.
Area forecast discussion, Apr 28, 4:04 AM MDT, 22 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER/BOULDER CO 404 AM MDT THU APR 28 2016 .SHORT TERM...(TODAY AND TONIGHT) ISSUED AT 400 AM MDT THU APR 28 2016 WATER VAPOR IMAGERY SHOWING THE BROAD UPPER LOW ACROSS SOUTHERN CALIFORNIA AND WEST CENTRAL ARIZONA THIS MORNING. AHEAD OF THE MAIN LOW... THERE IS AN INITIAL PIECE OF ENERGY THAT HAS MOVED INTO WESTERN COLORADO WITH INCREASING MOISTURE AND SHOWERS. EXPECT A GRADUAL INCREASE IN SHOWER ACTIVITY BY LATER THIS MORNING AS MOST OF THE SHORT RANGE MODELS SHOWING SHOWERS INCREASING IN THE 15Z- 18Z TIME RANGE OVER THE FRONT RANGE FOOTHILLS AND URBAN CORRIDOR. TEMPERATURES WILL WARM ENOUGH THAT MUCH OF THE PRECIP WILL BE IN THE FORM OF RAIN ON THE PLAINS AND A MIX OF RAIN AND SNOW IN THE FOOTHILLS. THE MAIN UPPER LOW WILL MOVE TO NEAR THE 4 CORNERS REGION BY THIS EVENING WITH MODERATE QG ASCENT AHEAD OF THE LOW AND DEEPENING UPSLOPE FLOW. PRECIP WILL BECOME WIDESPREAD OVER THE ENTIRE AREA OVERNIGHT WHILE SHOULD SEE ENOUGH COLD AIR TO SEE RAIN MIXING AND CHANGING TO SNOW BY MIDNIGHT OVER THE URBAN CORRIDOR AND OVERNIGHT ACROSS THE PLAINS. THERE ARE SOME DIFFERENCES IN THE TEMPERATURE STRUCTURE OF THE MODELS AS THE NAM IS SHOWING A SLIGHTLY COLDER AIRMASS THAN THE GFS. WILL UPGRADE THE CURRENT WINTER STORM WATCHES TO WINTER STORM WARNINGS FOR THE MOUNTAINS AND FOOTHILLS WHILE ADDING A WINTER STORM WATCH TO ZONE 41 ACROSS THE PALMER DIVIDE. STILL ENOUGH UNCERTAINTY ON HOW MUCH SNOW WILL ACTUALLY FALL OVER THE PALMER DIVIDE GIVEN THE COLDER TEMPERATURES AND HIGHER ELEVATIONS. STILL ENOUGH POTENTIAL TO HAVE A WATCH THERE. .LONG TERM...(FRIDAY THROUGH WEDNESDAY) ISSUED AT 313 AM MDT THU APR 28 2016 THE MDLS REMAIN CONSISTENT IN THE TIMING AND TRACK OF THE NEXT STORM SYSTEM THROUGH SATURDAY. IT IS STILL PROGGED TO BE NEAR THE FOUR CORNERS REGION FRIDAY MORNING THEN IS EXPECTED TO MOVE ACROSS THE STATE THROUGH FRIDAY NIGHT AND INTO SOUTH CENTRAL NEBRASKA BY SATURDAY. THE MDLS SHOW MODERATE QG ASCENT THROUGH FRIDAY EVENING THEN IT WEAKENS AS THE SYSTEM SHIFTS FURTHER EAST. NAM12 FORECAST SOUNDINGS AND SPATIAL CROSS SECTIONS SHOW MOIST ADIABATIC LAPSE RATES WITH A FAIRLY DEEP ESELY UPSLOPE COMPONENT THROUGH THE DAY ON FRIDAY. AS THE TROUGH SHIFTS TO THE EAST FRIDAY NIGHT INTO SATURDAY THE FLOW ALOFT TRANSITIONS TO NWLY. OVERALL QPF FOR MOST OF THE MDLS IS AROUND 1-1.5 INCHES WITH THE GFS THE OUTLIER WITH TWICE THOSE AMOUNT. WILL SIDE WITH THE CONSENSUS VS THE GFS AS IT STILL SHOWS SNOWFALL OF 20-30 INCHES ACROSS THE NORTHEAST PLAINS...WHICH SEEMS TOO HIGH FOR THIS TIME OF YEAR EVEN IF IT WERE TO GET COLD ENOUGH. THE AIRMASS DOES APPEAR COLD ENOUGH FOR SNOW WITH THE BEST WINDOW FOR ACCUMULATING SNOWFALL FRIDAY MORNING AND FRIDAY EVENING...WHEN TEMPERATURES ARE AROUND FREEZING. DO NOT EXPECT THE SNOWFALL TO ACCUMULATE AS MUCH IN THE AFTERNOON AS TEMPERATURES CLIMB INTO THE MID 30S. NO HIGHLIGHTS FOR THE URBAN CORRIDOR AT THIS TIME...BUT A WINTER WEATHER ADVISORY MAY BE NECESSARY FOR FRIDAY/FRIDAY NIGHT. STILL LOTS OF QUESTIONS REGARDING THE POSSIBLE SNOW AMOUNTS FOR THE PLAINS...BUT MIXED PCPN WOULD LOWER SNOWFALL NUMBERS SIGNIFICANTLY. OVER THE WEEKEND...STILL UNSETTLED WITH COLORADO CAUGHT BETWEEN THE EXITING TROUGH OVER NEBRASKA WITH ANOTHER TROUGH MOVING INTO NORTHWEST ARIZONA. WEAK DEFORMATION AREA OVER COLORADO SATURDAY NIGHT INTO SUNDAY...WITH AT LEAST THE NAM12 SHOWING FAVORABLE NELY UPSLOPE IN THE LOWER LEVELS. AS A RESULT THE POTENTIAL FOR SOME LIGHT SNOW POSSIBLE IN AND NEAR THE FOOTHILLS/PALMER DIVIDE SATURDAY NIGHT/SUNDAY MORNING. THE NEXT SYSTEM IS PROGGED TO LIFT FOR NORTH THAN EAST SUNDAY INTO MONDAY BUT A MOIST SOUTHWESTERLY FLOW MAY STILL BRING SOME LIGHT SNOW TO THE REGION INTO EARLY NEXT WEEK. SHOULD SEE SOME IMPROVEMENT TUESDAY INTO WEDNESDAY AS A RIDGE BUILDS OVER THE ROCKY MOUNTAIN REGION...WITH DRIER AND WARMER WEATHER BY THE MIDDLE OF NEXT WEEK. && .AVIATION...(FOR THE 12Z TAFS THROUGH 12Z FRIDAY MORNING) ISSUED AT 404 AM MDT THU APR 28 2016 WIDESPREAD STRATUS DECK ACROSS THE FRONT RANGE WITH STILL SOME VERY LIGHT SNOW/FLURRIES MAINLY AROUND APA AND POINTS SOUTH. FLURRIES WILL BE ENDING CLOSE TO DAYBREAK. EXPECT INCREASING SHOWER ACTIVITY LATER THIS MORNING AND CONTINUE THROUGH THIS AFTERNOON WITH LOWER CEILINGS. THE MORE WIDESPREAD RAIN WILL DEVELOP THIS EVENING AND OVERNIGHT WHILE TEMPS WILL BE COLD ENOUGH TO TURN MOST OF THE RAIN TO SNOW BY LATE EVENING OR CLOSE TO MIDNIGHT. EXPECT SOME LIGHT SNOW ACCUMULATIONS OF 1-3 INCHES BY FRIDAY AM BUT RUNWAY SURFACES MAINLY WET/SLUSHY. && .BOU WATCHES/WARNINGS/ADVISORIES... WINTER STORM WATCH FROM THIS EVENING THROUGH FRIDAY EVENING FOR COZ041. WINTER STORM WARNING FROM 6 PM THIS EVENING TO MIDNIGHT MDT FRIDAY NIGHT FOR COZ033>037. && SHORT TERM...ENTREKIN LONG TERM...COOPER AVIATION...ENTREKIN
Hazardous weather outlook, Apr 27, 11:50 AM MDT, 16 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1150 AM MDT WED APR 27 2016 COZ030>051-281800- 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- 1150 AM MDT WED APR 27 2016 ...WINTER STORM WATCH IN EFFECT FOR THE FRONT RANGE MOUNTAINS AND FOOTHILLS FROM EARLY THURSDAY EVENING TO LATE FRIDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED LIGHT SNOW SHOWERS WILL CONTINUE OVER HIGHER ELEVATIONS OF THE FRONT RANGE MOUNTAINS FOR THE REMAINDER OF TODAY...WITH ANY NEW ACCUMULATIONS GENERALLY UNDER 2 INCHES AND MAINLY ON NORTHWEST FACING SLOPES. ON THE PLAINS...GUSTY NORTHWEST WINDS WILL CONTINUE TODAY WITH POSSIBLE GUSTS TO AROUND 40 MPH IN AREAS MAINLY EAST OF INTERSTATE 25. IN ADDITION...EXPECT A FEW LIGHT RAIN SHOWERS TO DRIFT OFF THE FRONT RANGE THIS AFTERNOON...WITH RAIN AMOUNTS NO MORE THAN A COUPLE HUNDREDTHS OF AN INCH. TONIGHT...SNOW SHOWERS WILL BE ON THE INCREASE OVER MOUNTAIN AREAS GENERALLY SOUTH OF INTERSTATE 70 WHERE A FEW INCHES OF SNOW MAY FALL BY MORNING. ON THE PLAINS...LOOK FOR PATCHY FOG TO FORM LATE TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A STORM SYSTEM WILL DEVELOP INTO THE FOUR CORNERS REGION THURSDAY SPREADING PRECIPITATION ACROSS THE OUTLOOK AREA DURING THE DAY. THIS PRECIPITATION WILL CONTINUE THROUGH AT LEAST FRIDAY EVENING AS THE STORM TRAVERSES COLORADO. SIGNIFICANT SNOW ACCUMULATIONS WILL LIKELY OCCUR IN THE HIGH COUNTRY. IT IS NOT CERTAIN AT THIS TIME WHETHER TEMPERATURES AT LOWER ELEVATIONS WILL BE COLD ENOUGH TO PRODUCE SNOW BUT MIXED PRECIPITATION IS NOT OUT OF THE QUESTION ACROSS THE PLAINS AND URBAN CORRIDOR. THE STORM SHOULD EXIT THE STATE SATURDAY...LOWERING THE CHANCES OF PRECIPITATION AT THAT TIME BUT ANOTHER STORM MAY DEVELOP SIMILARLY TO BRING ANOTHER ROUND OF RAIN AND SNOW TO THE OUTLOOK AREA EARLY NEXT WEEK. TEMPERATURES WILL BE WELL BELOW NORMAL THROUGHOUT THE PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. BAKER/ET
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 4:26 AM MDT | Winter Storm Watch | BOU | Arapahoe, Douglas, Elbert | 8 hr |
| Apr 28, 12:43 PM MDT | Winter Weather Advisory | BOU | Arapahoe, Boulder, Clear Creek, Douglas, Elbert, Gilpin and 6 more | 32 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.