Red Flag Warning
URGENT – FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
245 PM MDT MON MAR 21 2011

…EXTREME FIRE WEATHER CONDITIONS EXPECTED THROUGH EARLY THIS
EVENING AND THEN AGAIN FROM TUESDAY AFTERNOON THROUGH EARLY
TUESDAY EVENING…

.STRONG GUSTY SOUTHWEST WINDS…VERY LOW RELATIVE HUMIDITY
VALUES…AND ABNORMALLY WARM TEMPERATURES HAVE DEVELOPED THIS
AFTERNOON AND WILL CONTINUE THROUGH THIS EVENING. VERY DRY FUELS WILL
ALLOW FIRES TO IGNITE EASILY AND SPREAD RAPIDLY. HUMIDITIES WILL
REMAIN IN THE SINGLE DIGITS THROUGH THIS EVENING AS STRONG WIND GUSTS
ALSO CONTINUE.

ALTHOUGH IT WILL BE MUCH COOLER ON TUESDAY…GUSTY WEST TO
NORTHWEST WINDS AND VERY LOW RELATIVE HUMIDITIES WILL ONCE AGAIN
ELEVATE THE FIRE DANGER ACROSS SOUTH PARK…THE FRONT RANGE
FOOTHILLS AND NORTHEAST PLAINS. THE STRONGEST WINDS ARE EXPECTED
TO OCCUR TUESDAY AFTERNOON THROUGH EARLY TUESDAY EVENING.

COZ239>241-244>247-249-220845-
/O.UPG.KBOU.FW.A.0004.110322T1800Z-110323T0200Z/
/O.NEW.KBOU.FW.W.0007.110322T1800Z-110323T0200Z/
/O.CON.KBOU.FW.W.0006.000000T0000Z-110322T0400Z/
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-
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-
WASHINGTON COUNTY-
245 PM MDT MON MAR 21 2011

…RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
239…240…241…244…245…246…247 AND 249…
…RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT TUESDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 239…240…
241…244…245…246…247 AND 249…

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING…WHICH IS IN EFFECT FROM NOON TO 8 PM MDT TUESDAY. THE
FIRE WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREA…FIRE WEATHER ZONE 239…ARVADA…BOULDER…
GOLDEN…LAKEWOOD…LONGMONT…FIRE WEATHER ZONE 240…
AURORA…BRIGHTON…CITY OF DENVER…DENVER INTERNATIONAL
AIRPORT…HIGHLANDS RANCH…LITTLETON…PARKER…FIRE WEATHER
ZONE 241…CASTLE ROCK…ELBERT…FONDIS…KIOWA…LARKSPUR…
FIRE WEATHER ZONE 244…BRUSH…FORT MORGAN…GOODRICH…
WIGGINS…FIRE WEATHER ZONE 245…BENNETT…BYERS…DEER
TRAIL…LEADER…FIRE WEATHER ZONE 246…AGATE…HUGO…
LIMON…MATHESON…FIRE WEATHER ZONE 247…FORDER…KARVAL…
KUTCH…PUNKIN CENTER…FIRE WEATHER ZONE 249…AKRON…
COPE…LAST CHANCE…OTIS.

* TIMING…GUSTY WINDS AND VERY LOW RELATIVE HUMIDITIES WILL
CONTINUE THROUGH THE AFTERNOON AND EARLY EVENING. THERE WILL BE
GRADUAL IMPROVEMENT LATER THIS EVENING. RED FLAG CONDITIONS
WILL REDEVELOP AGAIN FROM TUESDAY AFTERNOON THROUGH EARLY TUESDAY EVENING.

* WIND…SOUTH TO SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 40
MPH THROUGH EARLY THIS EVENING. ON TUESDAY WINDS WILL BECOME
WEST TO NORTHWEST WITH SPEEDS INCREASING TO 20 TO 30 MPH BY
AFTERNOON WITH GUSTS UP TO 40 MPH POSSIBLE.

* HUMIDITY…MINIMUM RELATIVE HUMIDITY VALUES WILL RANGE FROM 5
TO 10 PERCENT.

* IMPACTS…STRONG GUSTY WINDS…ABNORMALLY WARM TEMPERATURES AND
VERY LOW RELATIVE HUMIDITIES WILL COMBINE WITH AN UNSTABLE
ATMOSPHERE TO PRODUCE FAVORABLE CONDITIONS FOR THE RAPID GROWTH
AND SPREAD OF WILDLAND FIRES THROUGH CURED FUELS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

CRITICAL FIRE WEATHER CONDITIONS ARE IMMINENT. PLEASE ADVISE THE
APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED
FLAG WARNING.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE
OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING.

&&

$$

Red Flag Warning
URGENT – FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
245 PM MDT MON MAR 21 2011

…EXTREME FIRE WEATHER CONDITIONS EXPECTED THROUGH EARLY THIS
EVENING AND THEN AGAIN FROM TUESDAY AFTERNOON THROUGH EARLY
TUESDAY EVENING…

.STRONG GUSTY SOUTHWEST WINDS…VERY LOW RELATIVE HUMIDITY
VALUES…AND ABNORMALLY WARM TEMPERATURES HAVE DEVELOPED THIS
AFTERNOON AND WILL CONTINUE THROUGH THIS EVENING. VERY DRY FUELS WILL
ALLOW FIRES TO IGNITE EASILY AND SPREAD RAPIDLY. HUMIDITIES WILL
REMAIN IN THE SINGLE DIGITS THROUGH THIS EVENING AS STRONG WIND GUSTS
ALSO CONTINUE.

ALTHOUGH IT WILL BE MUCH COOLER ON TUESDAY…GUSTY WEST TO
NORTHWEST WINDS AND VERY LOW RELATIVE HUMIDITIES WILL ONCE AGAIN
ELEVATE THE FIRE DANGER ACROSS SOUTH PARK…THE FRONT RANGE
FOOTHILLS AND NORTHEAST PLAINS. THE STRONGEST WINDS ARE EXPECTED
TO OCCUR TUESDAY AFTERNOON THROUGH EARLY TUESDAY EVENING.

COZ239>241-244>247-249-220845-
/O.UPG.KBOU.FW.A.0004.110322T1800Z-110323T0200Z/
/O.NEW.KBOU.FW.W.0007.110322T1800Z-110323T0200Z/
/O.CON.KBOU.FW.W.0006.000000T0000Z-110322T0400Z/
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-
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-
WASHINGTON COUNTY-
245 PM MDT MON MAR 21 2011

…RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES
239…240…241…244…245…246…247 AND 249…
…RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT TUESDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 239…240…
241…244…245…246…247 AND 249…

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING…WHICH IS IN EFFECT FROM NOON TO 8 PM MDT TUESDAY. THE
FIRE WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREA…FIRE WEATHER ZONE 239…ARVADA…BOULDER…
GOLDEN…LAKEWOOD…LONGMONT…FIRE WEATHER ZONE 240…
AURORA…BRIGHTON…CITY OF DENVER…DENVER INTERNATIONAL
AIRPORT…HIGHLANDS RANCH…LITTLETON…PARKER…FIRE WEATHER
ZONE 241…CASTLE ROCK…ELBERT…FONDIS…KIOWA…LARKSPUR…
FIRE WEATHER ZONE 244…BRUSH…FORT MORGAN…GOODRICH…
WIGGINS…FIRE WEATHER ZONE 245…BENNETT…BYERS…DEER
TRAIL…LEADER…FIRE WEATHER ZONE 246…AGATE…HUGO…
LIMON…MATHESON…FIRE WEATHER ZONE 247…FORDER…KARVAL…
KUTCH…PUNKIN CENTER…FIRE WEATHER ZONE 249…AKRON…
COPE…LAST CHANCE…OTIS.

* TIMING…GUSTY WINDS AND VERY LOW RELATIVE HUMIDITIES WILL
CONTINUE THROUGH THE AFTERNOON AND EARLY EVENING. THERE WILL BE
GRADUAL IMPROVEMENT LATER THIS EVENING. RED FLAG CONDITIONS
WILL REDEVELOP AGAIN FROM TUESDAY AFTERNOON THROUGH EARLY TUESDAY EVENING.

* WIND…SOUTH TO SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 40
MPH THROUGH EARLY THIS EVENING. ON TUESDAY WINDS WILL BECOME
WEST TO NORTHWEST WITH SPEEDS INCREASING TO 20 TO 30 MPH BY
AFTERNOON WITH GUSTS UP TO 40 MPH POSSIBLE.

* HUMIDITY…MINIMUM RELATIVE HUMIDITY VALUES WILL RANGE FROM 5
TO 10 PERCENT.

* IMPACTS…STRONG GUSTY WINDS…ABNORMALLY WARM TEMPERATURES AND
VERY LOW RELATIVE HUMIDITIES WILL COMBINE WITH AN UNSTABLE
ATMOSPHERE TO PRODUCE FAVORABLE CONDITIONS FOR THE RAPID GROWTH
AND SPREAD OF WILDLAND FIRES THROUGH CURED FUELS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

CRITICAL FIRE WEATHER CONDITIONS ARE IMMINENT. PLEASE ADVISE THE
APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED
FLAG WARNING.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE
OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING.

&&

$$

Short Term Forecast
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE DENVER CO
407 PM MDT MON MAR 21 2011

COZ039>041-045>047-220015-
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-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-
INCLUDING ARVADA…BOULDER…GOLDEN…LAKEWOOD…LONGMONT…
AURORA…BRIGHTON…CITY OF DENVER…DENVER INTERNATIONAL
AIRPORT…HIGHLANDS RANCH…LITTLETON…PARKER…CASTLE ROCK…
ELBERT…FONDIS…KIOWA…LARKSPUR…BENNETT…BYERS…DEER
TRAIL…LEADER…AGATE…HUGO…LIMON…MATHESON…FORDER…
KARVAL…KUTCH…PUNKIN CENTER
407 PM MDT MON MAR 21 2011

.NOW…
SOUTH-SOUTHWESTERLY WINDS OF 20 TO 35 MPH ARE EXPECTED ACROSS
DENVER…DOUGLAS…ELBERT…LINCOLN…EASTERN ADAMS…AND EASTERN
ARAPAHOE COUNTIES THROUGH 6 PM. GUSTS TO 45 MPH ARE POSSIBLE. THE
GUSTY WINDS WILL ELEVATE THE FIRE DANGER.

$$

Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER CO
1056 AM MDT MON MAR 21 2011

COZ030>051-221200-
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-
1056 AM MDT MON MAR 21 2011

…GUSTY WINDS AND VERY DRY CONDITIONS TO CONTINUE THROUGH TUESDAY…

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

.DAY ONE…TODAY AND TONIGHT

WARM AND VERY DRY CONDITIONS WILL CONTINUE ALONG THE FOOTHILLS AND
ACROSS THE PLAINS TODAY. WINDS WILL CONTINUE TO INCREASE OVER THE
AREA AHEAD OF AN APPROACHING COLD FRONT. THE STRONGEST WINDS AND
DRIEST AIR WILL OCCUR IN AREAS SOUTH AND SOUTHWEST OF DENVER…WHERE
THE HUMIDITY WILL BE AS LOW AS 3 PERCENT AND WINDS WILL GUST AS HIGH
AS 45 MPH. ELSEWHERE…CONDITIONS WILL NOT BE AS EXTREME…BUT THE
FIRE DANGER WILL REMAIN VERY HIGH. THE FRONT WILL MOVE ACROSS THE
AREA TONIGHT…BRINGING COOLER AIR ALONG WITH A WIND SHIFT TO THE
WEST. ALTHOUGH THE WINDS ARE EXPECTED TO DECREASE OVER MOST AREAS
BY MIDNIGHT…IT WILL REMAIN GUSTY ACROSS THE HIGHER MOUNTAINS AND
FRONT RANGE FOOTHILLS OVERNIGHT. AREAS OF LIGHT SNOW WILL DEVELOP
OVER THE HIGHER MOUNTAINS AFTER MIDNIGHT…WITH ACCUMULATIONS OF 1
TO 4 INCHES POSSIBLE BY TUESDAY MORNING.

.DAYS TWO THROUGH SEVEN…TUESDAY THROUGH SUNDAY

THE PACIFIC STORM SYSTEM WILL MOVE OUT OF NORTHEAST COLORADO BY
MIDDAY TUESDAY. THERE WILL BE SOME LIGHT SNOW IN THE MOUNTAINS…
MAINLY ALONG THE HIGHER WEST FACING SLOPES…BUT IT WILL REMAIN DRY
ELSEWHERE. ALTHOUGH IT WILL BE 15 TO 20 DEGREES COOLER ON THE
PLAINS TUESDAY…VERY GUSTY WEST WINDS WILL FOLLOW THE PASSAGE
OF THE COLD FRONT. WIND SPEEDS OF 20 TO 30 MPH WITH HIGHER GUSTS
ARE EXPECTED ACROSS THE PLAINS TUESDAY AFTERNOON. HUMIDITY LEVELS
WILL ALSO REMAIN LOW. AS A RESULT…THE FIRE DANGER IN SOUTH
PARK…THE FRONT RANGE FOOTHILLS AND NORTHEAST PLAINS…WILL REMAIN
VERY HIGH.

LATER IN THE WEEK AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL MOVE
OVER THE STATE. IT WILL BE DRY ON WEDNESDAY…BUT THEN A CHANCE OF
SNOW IN THE MOUNTAINS RETURNS ON THURSDAY AND FRIDAY. THE WEATHER
PATTERN WILL BECOME RATHER UNSETTLED OVER THE WEEKEND WITH A
PERSISTENT CHANCE OF SNOW IN THE MOUNTAINS…AND A SLIGHT CHANCE OF
PRECIPITATION SPREADING ONTO THE NORTHEAST PLAINS.

.SPOTTER INFORMATION STATEMENT…

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

$$
D-L/DANKERS