Alert archive / Colorado / Winter Storm Watches in 2016
Winter Storm Watch 10, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm watch at Apr 28, 2016, 4:26 AM MDT for Arapahoe County, Douglas County, Elbert County, Colorado. It took effect at Apr 28, 2016, 6:00 PM MDT. It was in force for .
The area
The counties it named.
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 28, 2016, 12:43 PM MDT
- In force
- Issued by
- NWS Denver/Boulder, CO
Counties Arapahoe County, CO, Douglas County, CO, Elbert County, CO
The radar
The Denver radar (KFTG), 41 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.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 10.4 hours before the alert went out and 117 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
What forecasters said that day
The local office's own words before this winter storm watch 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 watch went out at Apr 27, 4:00 PM MDT, 12 hours 26 minutes earlier.
Area forecast discussion, Apr 27, 4:00 PM MDT, 12 hours 26 minutes before
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</html>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 Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 36 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 Watches in Colorado, 2016Every winter storm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.