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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1102 AM MDT Sat May 15 2021

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-
1102 AM MDT Sat May 15 2021

This hazardous weather outlook is for northeast and north central

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected this afternoon and evening,
mainly over and east of the Front Range. Some of the storms could
be severe, with the main hazards being hail up to 2 inches in
diameter, slightly larger than a golf ball. Wind gusts to 60 mph
and heavy rain are also possible. Storm initiation will likely
begin near and over the southern foothills and Palmer Divide
between 1pm and 2pm, with severe storms most likely south of a
line from Boulder to Limon between 4 PM and 8 PM, with storms
possibly lingering in Lincoln county as late as 11 PM. Over the
burn scars of Larimer and Boulder county there is a low risk of
flooding from passing thunderstorms that could drop up to an inch
of rain in less than an hour. West of the Front Range,
thunderstorms will be drier with more of a wind threat, however a
stronger storm could produce brief heavy rain and strong winds,
but flooding or severe storms are not expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Showers and thunderstorms will be likely across much of the area
Sunday afternoon and night. The main threat from these storms will
be flooding over the burn areas as they will be slow moving. A
storm or two could reach severe thresholds mainly over the Palmer
Divide and east-central plains with hail and damaging wind the
main threat. Thunderstorm chances continue on Monday and Tuesday
with widespread precipitation likely. The risk for these storms to
produce flooding or severe hail or wind will be low. Showers and
storms will be possible Wednesday into next weekend as
temperatures get warmer.


Spotter activation will be needed after 2 PM.


U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
Page last modified: May 16, 2007
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