Watches, Warnings, and Advisories

Current Watches, Warnings and Advisories for Jefferson (COC059) Colorado Issued by the National Weather Service


Flash Flood Watch Flash Flood Watch - Jefferson (Colorado)

Updated:Mon, 28-Jul-2014 10:10pm MDT
Effective:Mon, 28-Jul-2014 10:10pm MDT
Expires:Wed, 30-Jul-2014 6:00pm MDT

Areas affected: Boulder And Jefferson Counties Below 6000 Feet, West Broomfield County; Central and East Adams and Arapahoe Counties; Central and South Weld County; Central and Southeast Park County; Elbert, Central and East Douglas Counties Above 6000 Feet; Jefferson and West Douglas Counties Above 6000 Feet, Gilpin, Clear Creek, Northeast Park Counties Below 9000 Feet; Larimer County Below 6000 Feet, Northwest Weld County; Larimer and Boulder Counties Between 6000 and 9000 Feet; Morgan County; North Douglas County Below 6000 Feet, Denver, West Adams and Arapahoe Counties, East Broomfield County; North and Northeast Elbert County Below 6000 Feet, North Lincoln County; Northeast Weld County; 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; Southeast Elbert County Below 6000 Feet, South Lincoln County; Washington County
Instructions: A flash flood watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should flash flood warnings be issued.

Message summary: ...heavy rain likely for the front range and eastern plains tuesday afternoon through wednesday afternoon...
.monsoon moisture combined with a moist easterly upslope flow will produce widespread showers and thunderstorms tuesday afternoon and into wednesday. An upper level system will help trigger the showers and storms...which is expected to continue through the night tuesday night. Additional rain and thunderstorms are expected wednesday as a second upper level system passes over the state. Widespread rainfall amounts of 1 to 2 inches are expected across the area. Thunderstorms will produce locally very heavy rainfall with several inches of rain possible over a few hours.
...flash flood watch remains in effect from tuesday afternoon through wednesday afternoon...
The flash flood watch continues for
* portions of central colorado...east central colorado...north central colorado and northeast colorado...including the following central colorado...central and southeast park county...jefferson and west douglas counties above 6000 feet/gilpin/clear creek/northeast park counties below 9000 feet and south and southeast grand/west central and southwest boulder/gilpin/clear creek/summit/north and west park counties above 9000 feet. In east central colorado...north and northeast elbert county below 6000 feet/north lincoln county and southeast elbert county below 6000 feet/south lincoln county. In north central colorado...larimer county below 6000 feet/northwest weld county...larimer and boulder counties between 6000 and 9000 feet and south and east jackson/larimer/north and northeast grand/northwest boulder counties above 9000 feet. In northeast colorado...boulder and jefferson counties below 6000 feet/west broomfield county...
Central and east adams and arapahoe counties...central and south weld county...elbert/central and east douglas counties above 6000 feet...morgan county...north douglas county below 6000 feet/denver/west adams and arapahoe counties/east broomfield county...northeast weld county and washington county.
* from tuesday afternoon through wednesday afternoon
* widespread showers and thunderstorms will produce 1 to 2 inches of rain tuesday afternoon through wednesday. Some thunderstorms may train or reform over the same areas and produce several inches of rainfall.
* flash flooding of low lying areas...creeks and streams will be possible along with rock and mud slides. If you live in flood prone areas or will be traveling...stay alert to the weather and be prepared for rapidly rising water levels.
...view the complete message

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Source: NWS Watches, Warnings or Advisories for zone COC059

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