Hazardous Weather Outlook
Issued by NWS Denver/Boulder, CO

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FLUS45 KBOU 221043
HWOBOU

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
443 AM MDT FRI MAY 22 2015

COZ030>051-231045-
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-
443 AM MDT FRI MAY 22 2015

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

.DAY ONE...TODAY AND TONIGHT

OCCASIONAL RAIN SHOWERS ACROSS THE PLAINS WILL MOVE NORTHWARD
WITH RAIN DIMINISHING FROM SOUTH TO NORTH AFTER 9 AM. RAINFALL
RATES THIS MORNING WILL GENERALLY BE AROUND A TENTH OF AN INCH PER
HOUR OR LESS. THIS WILL RESULT IN MINIMAL RISES IN RIVERS AND
STREAMS. RAIN AND SNOW SHOWERS OVER THE MOUNTAINS WILL DECREASE
BY LATER THIS MORNING WITH SOME ADDITIONAL ACCUMULATIONS UP TO 4
INCHES IN LOCATIONS ABOVE TIMBERLINE.

THERE WILL BE SOME PARTIAL CLEARING AND WARMER TEMPERATURES BY
EARLY AFTERNOON. THIS HEATING WILL ALLOW THE ATMOSPHERE TO BECOME
UNSTABLE WITH SCATTERED THUNDERSTORMS BY EARLY AFTERNOON. THE BEST
CHANCE FOR STORMS WILL BE OVER THE PALMER DIVIDE WITH A SLIGHT
CHANCE FOR SEVERE STORMS ACROSS EASTER DOUGLAS...ELBERT AND
NORTHERN LINCOLN COUNTIES. EXPECT HEAVY RAIN AND HAIL UP TO ONE
INCH IN DIAMETER WITH THE STRONGER STORMS. THE AIRMASS WILL BE
MORE STABLE FURTHER NORTH OVER THE PLAINS WITH LESSER CHANCES FOR
STORMS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

EXPECT SHOWERS AND THUNDERSTORMS MAINLY DURING THE AFTERNOON AND
EVENING HOURS EACH DAY THROUGH MIDWEEK...WITH THE BEST CHANCE FOR
THUNDERSTORMS SATURDAY AFTERNOON AND EVENING. SOME OF THESE STORMS
ROUGHLY NORTH OF A BOULDER TO AKRON LINE MAY TURN SEVERE WITH
LARGE HAIL THE MAIN THREAT. SUNDAY WILL FEATURE MORE WIDESPREAD
RAINFALL AND SLIGHTLY COOLER TEMPERATURES WITH THE PASSAGE OF AN
UPPER LEVEL LOW PRESSURE SYSTEM. LOCALLY HEAVY RAINFALL SATURDAY
AND SUNDAY COULD CAUSE MINOR RISES ON STREAMS AND RIVERS ALREADY
RUNNING HIGH AND FAST ON THE PLAINS.

TEMPERATURES SHOULD GRADUALLY MODERATE TO MORE SEASONAL LEVELS
DURING THE PERIOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED OVER THE PALMER DIVIDE AFTER 2
PM THIS AFTERNOON.

$$
ENTREKIN/BAKER



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