Alert archive / Colorado / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 103, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 2, 2010, 1:51 PM MDT for Adams County, Arapahoe County, Washington County, Colorado. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 2, 2010, 1:51 PM MDT (19:51 UTC)
- Expired
- Jul 2, 2010, 2:30 PM MDT
- In force
- 39 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adams County, CO, Arapahoe County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 50 km from the middle of the area, began a volume at 19:51 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 forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 2, 2:51 AM MDT, 11 hours earlier.
Area forecast discussion, Jul 2, 2:51 AM MDT, 11 hours before
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</html>Hazardous weather outlook, Jul 2, 11:23 AM MDT, 2 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1123 AM MDT FRI JUL 02 2010 COZ030>051-031200- 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- 1123 AM MDT FRI JUL 02 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SUBTROPICAL MOISTURE IN SOUTHWEST FLOW ALOFT WILL HELP TRIGGER SCATTERED AFTERNOON THUNDERSTORMS IN THE MOUNTAINS AND FOOTHILLS THIS AFTERNOON. THE STORMS WILL THEN SPREAD ACROSS THE URBAN CORRIDOR AND NORTHEAST PLAINS DURING THE MID AFTERNOON AND EVENING HOURS. THE STRONGER STORMS WILL PRODUCE FREQUENT CLOUD TO GROUND LIGHTNING...GUSTY WINDS TO 45 MPH AND LOCALLY HEAVY RAINFALL...UP TO A HALF INCH IN 30 MINUTES. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ISOLATED LATE DAY THUNDERSTORMS AND VERY WARM TEMPERATURES ON SATURDAY GIVE WAY TO SCATTERED SHOWERS AND MUCH COOLER TEMPERATURES ON SUNDAY. A STRONG COLD FRONT ASSOCIATED WITH A RATHER VIGOROUS UPPER LEVEL LOW PRESSURE TROUGH IS FORECAST TO DROP SOUTH THROUGH NORTHEAST COLORADO EARLY ON SUNDAY. DURING THE DAY COOL AND RELATIVELY MOIST UPSLOPE FLOW BEHIND THE COLD FRONT SHOULD PRODUCE QUITE A BIT OF CLOUDINESS AND HOLD AFTERNOON TEMPERATURES ON THE PLAINS TO THE 70S. HIGH COUNTRY LOCATIONS...PARTICULARLY WEST OF THE CONTINENTAL DIVIDE WILL NOT SEE AS MUCH COOLING WITH THIS SYSTEM. TEMPERATURES REBOUND AND SHOWERS GO AWAY ON MONDAY AS A WEAK HIGH PRESSURE RIDGE RACES ACROSS THE REGION. YET ANOTHER WEATHER DISTURBANCE DROPS OUT OF THE NORTHERN ROCKIES ON TUESDAY BRINGING WITH IT ANOTHER ROUND OF BELOW NORMAL TEMPERATURES AND SCATTERED SHOWERS TO THE OUTLOOK AREA TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. COOPER/BAKER
In the hours before
Special weather statement, Jul 2, 1:00 PM MDT, 51 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 100 PM MDT FRI JUL 2 2010 COZ045-046-021930- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY CO-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES CO- 100 PM MDT FRI JUL 2 2010 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL ELBERT COUNTY EASTERN ARAPAHOE COUNTY AT 100 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND WIND GUSTS TO AROUND 40 MPH. THIS STORM WAS LOCATED 3 MILES SOUTH OF DEER TRAIL... OR 29 MILES NORTHWEST OF LIMON...MOVING NORTHEAST AT 20 MPH. LOCATIONS IN THE ADVISORY INCLUDE BUT ARE NOT LIMITED TO DEER TRAIL. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINS MAY ALSO OCCUR WITH THIS STORM...WHICH MAY FLOOD LOW-LYING AREAS SUCH AS DITCHES AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. && LAT...LON 3974 10410 3974 10382 3948 10397 3955 10418 TIME...MOT...LOC 1900Z 202DEG 16KT 3960 10403
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 1:00 PM MDT | Special Weather Statement | BOU | Arapahoe | 30 min |
| Jul 2, 3:23 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 37 min |
| Jul 2, 3:59 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 31 min |
| Jul 2, 4:11 PM MDT | Areal Flood Advisory | BOU | Phillips | 94 min |
| Jul 2, 4:25 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 21 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2010Every severe thunderstorm warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.