Severe Thunderstorm Warning 83, NWS Denver/Boulder, CO

001 
WWUS55 KBOU 202304
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
504 PM MDT MON JUN 20 2016

COC059-093-202313-
/O.CAN.KBOU.SV.W.0083.000000T0000Z-160620T2315Z/
JEFFERSON CO-PARK CO-
504 PM MDT MON JUN 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL JEFFERSON AND
NORTHEASTERN PARK COUNTIES IS CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN CANCELLED.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
SOUTHWESTERN JEFFERSON COUNTY UNTIL 545PM.  

LAT...LON 3934 10541 3933 10547 3934 10548 3934 10545
      3937 10545 3937 10548 3939 10549 3939 10550
      3938 10550 3940 10554 3942 10549 3943 10550
      3944 10548 3950 10541 3941 10525 3931 10540
TIME...MOT...LOC 2257Z 275DEG 16KT 3942 10517 

$$

RTG

Area Forecast Discussion
National Weather Service Denver/Boulder CO
340 PM MDT MON JUN 20 2016

.SHORT TERM...(This evening through Tuesday)
Issued at 340 PM MDT Mon Jun 20 2016

Low clouds remained over much of northeast Colorado through the
afternoon, keeping temperatures on the plains too cool to support
shower development. Afternoon shower activity up to this point has
been limited to Park and Clear Creek Counties where thunderstorms
have been slow moving up to this point. This area along with
Douglas and Elbert Counties should be the least stable through the
evening. Thunderstorms should last for another 4 to 6 hours and
then dissipate. Locally heavy rain will be the primary threat from
showers along with some small hail and gusty outflow winds.

For Tuesday, the upper ridge strengthens over the state and warmer
air moves back over the state. High temperatures across the plains
are expected to jump back into the mid and upper 90s. Mountain
areas should be the only ones to see any afternoon showers.

.LONG TERM...(Tuesday night through Monday)
Issued at 340 PM MDT Mon Jun 20 2016

Expect showers and thunderstorms Tuesday evening, mainly over the
high terrain and south of I-70 over the plains before a cold front
pushes south over the area around or after midnight. These storms
will be high based and likely produce gusty winds. With the hot
day followed by breezy conditions from the cold front, Tuesday
nights low temperatures will likely be warmer than tonights along
with poor humidity recoveries.

The front will bring relief Wednesday from the near record temps.
Look for temperatures to be about 8 to 10 degrees cooler over the
plains and 5 to 8 degrees cooler over the high terrain. Residual
moisture combined with a weak shortwave aloft will bring another
day of afternoon and evening thunderstorms, focusing over the high
terrain and western and southern urban corridors due to upslope
flow.

Flow aloft will begin transitioning to southwest Thursday and
Friday as an upper trough pushes into the Pacific Northwest, which
will bring in warming temperatures again. The surface high over
the Great Plains will push east Thursday as a surface trough
deepens on the lee of the Rockies. The residual moisture under the
ridge will again spark into afternoon and evening convection these
days, moving off the high terrain and over the plains as the
surface trough deepens.

The upper trough is expected to pass north of the area this
weekend, sending a cold front down over the area for cooler
temperatures back near normal values. This front may push through
the area late Friday night. Readings should be in the mid 80s for
the plains and in the upper 60s to lower 70s in the mountains.

&&

.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon)
Issued at 340 PM MDT Mon Jun 20 2016

Continuing cloud cover is helping keep temperatures cool and
therefore keeping the airmass too stable to produce showers at
KDEN and KBJC. Radar is showing some showers that might cross
over KAPA for the next few hours. Impacts at KDEN might be limited
to wind shifts from thunderstorm outflow over the southern Denver
Metro area. Winds are expected to shift to drainage southerlies
overnight with ceilings dissipating. Warmer temperatures are
expected tomorrow which should be warm enough to suppress most
afternoon convective activity.

&&

.BOU Watches/Warnings/Advisories...
None.
&&

SHORT TERM...Dankers
LONG TERM...Kriederman
AVIATION...Dankers

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1110 AM MDT MON JUN 20 2016

COZ030>051-211715-
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-
1110 AM MDT MON JUN 20 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

LOW CLOUDS ACROSS MUCH OF THE NORTHEAST COLORADO PLAINS WILL KEEP
TEMPERATURES COOLER THROUGH THE AFTERNOON. THE ONLY AREAS EXPECTED
TO SEE AFTERNOON THUNDERSTORMS WILL BE THE FRONT RANGE FOOTHILLS
AND OVER THE PALMER DIVIDE. SOME STORMS OVER THE PALMER DIVIDE MAY
PRODUCE HAIL UP TO ONE INCH IN DIAMETER ALONG WITH LOCALLY HEAVY
RAIN AND GUSTY WINDS. STORMS OVER THE FOOTHILLS SHOULD PRODUCE
BRIEF RAIN AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ANOTHER HOT DAY IS EXPECTED ON TUESDAY WITH NEAR RECORD
TEMPERATURES AS HIGHS BOUNCE BACK INTO THE MID AND UPPER 90S.
WINDS WILL INCREASE OVER THE HIGH TERRAIN...INCREASING FIRE DANGER
AS THE HOT AND DRY WEATHER CONTINUES. IT WILL REMAIN WARM THROUGH
THE WEEK AS A RIDGE OF HIGH PRESSURE REMAINS AS THE DOMINANT
INFLUENCE...THOUGH A FEW WEAK COLD FRONTS WILL KEEP IT FROM
REACHING RECORD LEVELS...ESPECIALLY THIS WEEKEND.

THERE MAY BE ENOUGH MOISTURE AROUND LATE TUESDAY FOR A FEW HIGH
BASED THUNDERSTORMS. ENOUGH RESIDUAL MOISTURE WILL REMAIN OVER THE
AREA FOR THE WEEK TO KEEP A SLIGHT CHANCE OF AFTERNOON AND
EVENING THUNDERSTORMS EACH DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
422 PM MDT MON JUN 20 2016

COZ036-202300-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE  6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET CO-
422 PM MDT MON JUN 20 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL JEFFERSON AND
NORTHEASTERN PARK COUNTIES UNTIL 500 PM MDT...

AT 421 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
PINE JUNCTION...OR 31 MILES SOUTHWEST OF DENVER...MOVING EAST AT 20
MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
PINE JUNCTION...BAILEY AND PINE.

LAT...LON 3934 10541 3933 10547 3934 10548 3934 10545
      3937 10545 3937 10548 3939 10549 3939 10550
      3938 10550 3940 10554 3942 10549 3943 10550
      3944 10548 3950 10541 3941 10525 3931 10540
TIME...MOT...LOC 2221Z 275DEG 16KT 3943 10540

RTG