Alert archive / Colorado / Special Weather Statements in 2012
Special Weather Statement, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this special weather statement at Jul 25, 2012, 5:16 PM MDT for Logan County, Colorado. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 25, 2012, 5:16 PM MDT (23:16 UTC)
- Expired
- Jul 25, 2012, 6:15 PM MDT
- In force
- 59 min
- Issued by
- NWS Denver/Boulder, CO
County Logan County, CO
The radar
The Cheyenne radar (KCYS), 131 km from the middle of the area, began a volume at 23:16 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 (KDNR), launched 12:00Z, 11.3 hours before the alert went out and 92 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
- 2363 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 25, 3:42 PM MDT, 1 hour 34 minutes earlier.
Area forecast discussion, Jul 25, 3:42 PM MDT, 1 hour 34 minutes before
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</html>Hazardous weather outlook, Jul 25, 10:33 AM MDT, 6 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1033 AM MDT WED JUL 25 2012 COZ030>051-261645- 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- 1033 AM MDT WED JUL 25 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT ISOLATED SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER THE EASTERN PLAINS OF COLORADO THIS MORNING...BECOMING MORE NUMEROUS THIS AFTERNOON. EXPECT BRIEF HEAVY RAIN...GUSTY WINDS TO 40 MPH AND MAYBE SOME SMALL HAIL. FURTHER WEST...OVER THE URBAN CORRIDOR AND MOUNTAINS AND FOOTHILLS... THUNDERSTORM COVERAGE WILL BE MORE ISOLATED TODAY WITH WEAKER STORMS. DRIER AIR IS MOVING IN FROM THE WEST WHICH WILL KEEP THE THREAT OF HEAVY RAIN MUCH LOWER THAN PREVIOUS DAYS. STORMS WILL BE MOVING MORE EASTERLY BUT BEGIN TO DIMINISH BY LATE AFTERNOON AND EARLY THIS EVENING. TEMPERATURES WILL BE COOLER WITH HIGHS ONLY IN THE UPPER 80S TO LOWER 90S OVER THE PLAINS. THE GOOD NEWS IS NO TRIPLE DIGIT HEAT EXPECTED. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE WILL BE A SLIGHT CHANCE OF LATE DAY SHOWERS AND THUNDERSTORMS ACROSS MUCH OF THE FORECAST AREA ON THURSDAY. THERE WILL BE A BETTER CHANCE OF LATE DAY SHOWERS AND THUNDERSTORMS FRIDAY THROUGH SUNDAY...ESPECIALLY OVER THE HIGH COUNTRY. IT WILL DRY OUT A BIT MONDAY AND TUESDAY...SO ONLY A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS CAN BE EXPECTED. TEMPERATURES WILL HOVER AROUND SEASONAL NORMALS THROUGH MUCH OF THE PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
In the hours before
Special weather statement, Jul 25, 3:36 PM MDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 336 PM MDT WED JUL 25 2012 COZ035-038-252215- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY CO- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET CO- 336 PM MDT WED JUL 25 2012 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL LARIMER COUNTY AT 330 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING BRIEF HEAVY RAINFALL...UP TO ONE HALF INCH IN LESS THAN 30 MINUTES...PEA SIZE HAIL...AND WIND GUSTS TO AROUND 40 MPH. THIS STORM WAS LOCATED NEAR POUDRE PARK...OR 14 MILES NORTHWEST OF FORT COLLINS...MOVING SOUTHEAST AT 15 MPH. LOCATIONS IN THE ADVISORY INCLUDE BUT ARE NOT LIMITED TO THE HIGH PARK BURN AREA...WELLINGTON...TIMNATH...TEDS PLACE...POUDRE PARK...BUCKHORN MOUNTAIN...BELLVUE AND FORT COLLINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINS MAY ALSO OCCUR WITH THIS STORM...WHICH MAY FLOOD LOW-LYING AREAS SUCH AS DITCHES AND UNDERPASSES. MINOR FLOODING IN THE HIGH PARK BURN AREA MAY ALSO OCCUR SO SLOW DOWN AS SOME DEBRIS MAY GET WASHED ONTO HIGHWAY 14...THE POUDRE CANYON HIGHWAY. && LAT...LON 4070 10495 4041 10496 4060 10541 4077 10529 TIME...MOT...LOC 2130Z 293DEG 13KT 4068 10529
Special weather statement, Jul 25, 5:16 PM MDT, 0 minutes before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 3:36 PM MDT | Special Weather Statement | BOU | Larimer | 39 min |
Nearby
Special Weather Statements in Colorado, 2012Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.