Hazardous Weather Outlook
Issued by NWS Denver/Boulder, CO

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

FLUS45 KBOU 171623

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1023 AM MDT Thu May 17 2018

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
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
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1023 AM MDT Thu May 17 2018

This hazardous weather outlook is for northeast and north central

.DAY ONE...Today and Tonight

There will be a chance for thunderstorms east of a dry line
which is expected to set up along the Wyoming/Nebraska border
southward to Fort Morgan and to Limon. A few of these storms
could become severe with large hail up to 2 inches in diameter and
damaging winds. A tornado also can`t be ruled out. Thunderstorms
may reform over far northeast Colorado tonight and produce locally
heavy rainfall and possibly minor flooding. Further west towards
the Front Range, the airmass will be much drier with little if any
thunderstorm activity through this evening.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

On Friday, the chance for severe storms will encompass all of the
northeastern plains. Damaging winds and large hail will be the
primary severe weather threats Friday afternoon and evening, but
an isolated weak tornado is also possible.

A cold front will push down Friday night and bring rain showers
with a chance of thunderstorms transitioning to lighter and more
steady rain on Saturday. Light rain will continue into Saturday
evening, with a slight chance of thunderstorms mainly over the
higher terrain. Precipitation will change over to snow across the
mountains and higher foothills on Friday night and Saturday with
moderate snowfall amounts possible, especially above 9500 feet.

It will be drier on Sunday with a chance of showers and
thunderstorms mainly over the higher terrain by the afternoon
hours. Temperatures will be cooler this weekend, then warm up
again early next week with a chance of afternoon and evening
thunderstorms each day.


Spotter activation may be needed after 3 PM


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.