Red Flag Warning 19, NWS Sioux Falls, SD

929 
WWUS83 KFSD 110210
RFWFSD

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
910 PM CDT MON SEP 10 2012

...RED FLAG WARNING IN EFFECT TONIGHT THROUGH EARLY TUESDAY
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTHWEST
MINNESOTA... EXTREME NORTHEAST NEBRASKA AND NORTHWEST IOWA...

...RED FLAG WARNING IN EFFECT TUESDAY AND EARLY TUESDAY EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR EXTREME SOUTHEAST SOUTH
DAKOTA...

...FIRE WEATHER WATCH ISSUED FOR TUESDAY AND EARLY TUESDAY
EVENING OVER THE REST OF SOUTHEAST SOUTH DAKOTA FOR POTENTIAL LOW
RELATIVE HUMIDITY AND STRONG WIND...

.SOUTHERLY WINDS HAVE DIMINISHED EARLY THIS EVENING AFTER SUNSET...
AND REMAIN GENERALLY A GUSTY 15 TO 25 MPH ALONG AND EAST OF
INTERSTATE 29. WITH SOME SLIGHT RECOVERY IN HUMIDITY...THE RED
FLAG WARNING HAS BEEN CANCELLED FOR THE SOUTH DAKOTA PORTION OF
THE WARNING. HOWEVER...DESPITE WINDS DECREASING...IT IS LIKELY
THAT WINDS WILL RECOUPLE SOMEWHAT OVERNIGHT...ESPECIALLY NEAR AND
DOWNSTREAM OF HIGHER TERRAIN IN SOUTHWEST MINNESOTA...NORTHWEST
IOWA...AND EXTREME NORTHEAST NEBRASKA.

EXTREME FIRE WEATHER CONDITIONS WILL CONTINUE TUESDAY...WITH
VERY DRY AIR AND STRONG SOUTH TO SOUTHWEST WINDS...MAINLY EAST
OF I 29...BUT ALSO INCLUDING EXTREME NORTHEAST NEBRASKA AND FAR
SOUTHEAST SOUTH DAKOTA. WHILE IT WILL ALSO BE VERY DRY THROUGH
THE REMAINDER OF SOUTHEAST SOUTH DAKOTA...A FRONTAL ZONE WILL BE
PUSHING ACROSS THE AREA SHIFTING WINDS TO WEST AND NORTHWEST...
WITH SOME UNCERTAINTY LINGERING WHETHER WINDS WILL BECOME STRONG
ENOUGH TO CREATE THE MOST CRITICAL FIRE WEATHER CONDITIONS.

SDZ258-111015-
/O.CAN.KFSD.FW.W.0018.000000T0000Z-120911T0300Z/
/O.CON.KFSD.FW.W.0019.120911T1500Z-120912T0200Z/
LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY-
910 PM CDT MON SEP 10 2012

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 9 PM CDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
258...
...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONE 258...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS CANCELLED THE RED
FLAG WARNING.

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 258.

* WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...AS LOW AS 17 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

SDZ255>257-111015-
/O.CAN.KFSD.FW.W.0018.000000T0000Z-120911T0300Z/
/O.CON.KFSD.FW.A.0015.120911T1500Z-120912T0200Z/
LOWER BRULE AND LAKE ANDES VICINITY-MIDDLE JAMES RIVER VALLEY-
MIDDLE BIG SIOUX RIVER VALLEY-
910 PM CDT MON SEP 10 2012

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH TUESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 255...256 AND 257...
...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONES 255...256 AND 257...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS CANCELLED THE RED
FLAG WARNING.

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONES 255... 
  256 AND 257.

* WINDS...SOUTHWEST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH...
  SHIFTING NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 35 MPH WEST OF
  THE JAMES VALLEY.

* RELATIVE HUMIDITY...AS LOW AS 13 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
MAY OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG
WARNINGS.

&&

$$

IAZ300-301-MNZ900-NEZ249-111015-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0200Z/
NORTHERN LOESS HILLS AND FLOYD RIVER BASIN-
IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS-SOUTHWEST MINNESOTA-
EXTREME NORTHEAST NEBRASKA-
910 PM CDT MON SEP 10 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT TUESDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 249...300...
301 AND 900...

* AFFECTED AREA...IN IOWA...FIRE WEATHER ZONES 300 AND 301. IN 
  MINNESOTA...FIRE WEATHER ZONE 900. IN NEBRASKA...FIRE WEATHER 
  ZONE 249.

* WINDS...SOUTH 20 TO 30 MPH WITH GUSTS UP TO 40 MPH. SOME LOCALLY
  STRONGER WINDS OVERNIGHT NEAR ELEVATED LOCATIONS AND JUST
  DOWNSTREAM WITH GUSTS OF 30 TO 40 MPH.

* RELATIVE HUMIDITY...AS LOW AS 18 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

CHAPMAN

704 
WWUS83 KFSD 110827
RFWFSD

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
327 AM CDT TUE SEP 11 2012

...RED FLAG WARNING IN EFFECT TONIGHT THROUGH EARLY TUESDAY
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE ENTIRE AREA...

.A SIGNIFICANT COLD FRONT WILL MOVE EASTWARD ACROSS THIS AREA
TODAY. BY EARLY EVENING...THE LEADING EDGE OF THE FRONT SHOULD
EXTEND THROUGH THE HEART OF SOUTHWEST MINNESOTA...SOUTHWESTWARD TO
EXTREME NORTHWEST IOWA AND INTO NORTHEAST NEBRASKA. THE AIR MASS
WILL BE VERY DRY DAY AT ALL LOCATIONS TODAY WITH MINIMUM HUMIDITY
VALUES WELL LESS THAN 25 PERCENT. THE WIND DIRECTION AND WIND SPEED 
ARE MORE OF A CHALLENGE. AHEAD OF THE FRONT...SOUTH TO SOUTHWEST
WINDS OF 20 TO 35 MPH WILL BE QUITE COMMON IN SOUTHWEST MINNESOTA...
NORTHWEST IOWA AND EXTREME NORTHEAST NEBRASKA. BEHIND THE FRONT...
THE WINDS WILL BECOME NORTHWEST AND WILL BE A LITTLE LIGHTER...AVERAGING
15 TO 25 MPH FROM EAST CENTRAL SOUTH DAKOTA TO SOUTH CENTRAL SOUTH
DAKOTA. IN THE MID AND LATE AFTERNOON HOURS...THE FRONTAL PASSAGE
WILL AFFECT THE FIRE WEATHER ZONES ALONG AN AXIS FROM YANKTON...TO
SIOUX FALLS TO BROOKINGS WITH NOT ONLY A WIND SHIFT...BUT ALSO
THE WIND SPEEDS WILL LIKELY DECREASE TO A RANGE OF 10 TO 20 MPH.
HOWEVER DESPITE LESS WIND IN THESE ZONES...A RED FLAG WARNING IS
STILL WARRANTED DUE TO THE WIND SHIFT FROM THE SOUTHWEST TO
NORTHWEST...LOW HUMIDITY VALUES AND VERY LOW HUMIDITY RECOVERY
MONDAY NIGHT. ALSO KEEP IN MIND THAT FUELS ARE EXTREMELY DRY AT
ALL LOCATIONS WITH ON GOING SEVERE TO EXTREME DROUGHT CONDITIONS.


SDZ255-256-111630-
/O.UPG.KFSD.FW.A.0015.120911T1500Z-120912T0200Z/
/O.EXB.KFSD.FW.W.0018.120911T1500Z-120912T0000Z/
LOWER BRULE AND LAKE ANDES VICINITY-MIDDLE JAMES RIVER VALLEY-
327 AM CDT TUE SEP 11 2012

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONES 255 AND 256...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING. THE FIRE
WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONES 255 AND 
  256.

* WINDS...SOUTH TO SOUTHWEST WINDS 10 TO 20 MPH SHIFTING TO THE
  NORTHWEST IN THE LATE MORNING AND MIDDAY HOURS...AND AVERAGING
  15 TO 25 MPH THIS AFTERNOON. 

* RELATIVE HUMIDITY...15 TO 20 PERCENT. 

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

SDZ257-111630-
/O.UPG.KFSD.FW.A.0015.120911T1500Z-120912T0200Z/
/O.EXB.KFSD.FW.W.0018.120911T1500Z-120912T0000Z/
MIDDLE BIG SIOUX RIVER VALLEY-
327 AM CDT TUE SEP 11 2012

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONE 257...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING. THE FIRE
WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 257.

* WINDS...SOUTH TO SOUTHWEST WINDS 15 TO 30 MPH IN THE MORNING...
  BECOMING WEST 10 TO 20 MPH THROUGH THE AFTERNOON.

* RELATIVE HUMIDITY...NEAR 20 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

SDZ258-111630-
/O.EXT.KFSD.FW.W.0019.120911T1500Z-120912T0000Z/
LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY-
327 AM CDT TUE SEP 11 2012

...RED FLAG WARNING NOW IN EFFECT FROM 10 AM THIS MORNING TO 7 PM
CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONE 258...

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 258.

* WINDS...SOUTH TO SOUTHWEST WINDS 15 TO 30 MPH IN THE MORNING...
  BECOMING WEST 10 TO 20 MPH THROUGH THE AFTERNOON...BUT REMAINING
  QUITE BREEZY IN EXTREME SOUTHEAST SOUTH DAKOTA NEAR SIOUX CITY. 

* RELATIVE HUMIDITY...AROUND 17 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

IAZ300-301-MNZ900-NEZ249-111630-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0200Z/
NORTHERN LOESS HILLS AND FLOYD RIVER BASIN-
IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS-SOUTHWEST MINNESOTA-
EXTREME NORTHEAST NEBRASKA-
327 AM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 249...
300...301 AND 900...

* AFFECTED AREA...IN IOWA...FIRE WEATHER ZONES 300 AND 301. IN 
  MINNESOTA...FIRE WEATHER ZONE 900. IN NEBRASKA...FIRE WEATHER 
  ZONE 249.

* WINDS...SOUTH TO SOUTHWEST 20 TO 30 MPH...WITH OCCASIONAL GUSTS
  UP TO 35 MPH. 

* RELATIVE HUMIDITY...17 TO 22 PERCENT. 

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

592 
WWUS83 KFSD 111528
RFWFSD

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1028 AM CDT TUE SEP 11 2012

...RED FLAG WARNING IN EFFECT THROUGH THIS EVENING FOR WIND AND
LOW RELATIVE HUMIDITY FOR THE ENTIRE AREA...

.A SIGNIFICANT COLD FRONT WILL MOVE EASTWARD ACROSS THIS AREA
TODAY. BY EARLY EVENING...THE LEADING EDGE OF THE FRONT SHOULD
EXTEND THROUGH THE HEART OF SOUTHWEST MINNESOTA...SOUTHWESTWARD
TO EXTREME NORTHWEST IOWA AND INTO NORTHEAST NEBRASKA. THE AIR
MASS WILL BE VERY DRY DAY AT ALL LOCATIONS TODAY WITH MINIMUM
HUMIDITY VALUES WELL LESS THAN 25 PERCENT. THE WIND DIRECTION AND
WIND SPEED ARE MORE OF A CHALLENGE. AHEAD OF THE FRONT...SOUTH TO
SOUTHWEST WINDS OF 20 TO 35 MPH WILL BE QUITE COMMON IN SOUTHWEST
MINNESOTA... NORTHWEST IOWA AND EXTREME NORTHEAST NEBRASKA.
BEHIND THE FRONT... THE WINDS WILL BECOME NORTHWEST AND WILL BE A
LITTLE LIGHTER...AVERAGING 15 TO 25 MPH FROM EAST CENTRAL SOUTH
DAKOTA TO SOUTH CENTRAL SOUTH DAKOTA. IN THE MID AND LATE
AFTERNOON HOURS...THE FRONTAL PASSAGE WILL AFFECT THE FIRE
WEATHER ZONES ALONG AN AXIS FROM YANKTON...TO SIOUX FALLS TO
BROOKINGS WITH NOT ONLY A WIND SHIFT...BUT ALSO THE WIND SPEEDS
WILL LIKELY DECREASE TO A RANGE OF 10 TO 20 MPH. HOWEVER DESPITE
LESS WIND IN THESE ZONES...A RED FLAG WARNING IS STILL WARRANTED
DUE TO THE WIND SHIFT FROM THE SOUTHWEST TO NORTHWEST...LOW
HUMIDITY VALUES AND VERY LOW HUMIDITY RECOVERY MONDAY NIGHT. ALSO
KEEP IN MIND THAT FUELS ARE EXTREMELY DRY AT ALL LOCATIONS WITH
ON GOING SEVERE TO EXTREME DROUGHT CONDITIONS.

SDZ255-256-112330-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0000Z/
LOWER BRULE AND LAKE ANDES VICINITY-MIDDLE JAMES RIVER VALLEY-
1028 AM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 255 AND
256...

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONES 255 AND 
  256.

* WINDS...WEST SOUTHWEST WINDS 10 TO 20 MPH SHIFTING TO THE
  NORTHWEST BY THE MIDDAY HOURS...AND AVERAGING 15 TO 25 MPH THIS
  AFTERNOON.

* RELATIVE HUMIDITY...15 TO 20 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

IAZ300-301-MNZ900-NEZ249-112330-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0200Z/
NORTHERN LOESS HILLS AND FLOYD RIVER BASIN-
IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS-SOUTHWEST MINNESOTA-
EXTREME NORTHEAST NEBRASKA-
1028 AM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 249...
300...301 AND 900...

* AFFECTED AREA...IN IOWA...FIRE WEATHER ZONES 300 AND 301. IN 
  MINNESOTA...FIRE WEATHER ZONE 900. IN NEBRASKA...FIRE WEATHER 
  ZONE 249.

* WINDS...SOUTHWEST 20 TO 30 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...17 TO 22 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

SDZ258-112330-
/O.CON.KFSD.FW.W.0019.000000T0000Z-120912T0000Z/
LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY-
1028 AM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 258...

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 258.

* WINDS...SOUTH TO SOUTHWEST WINDS 15 TO 30 MPH IN THE LATE MORNING...
  BECOMING WEST 10 TO 20 MPH THROUGH THE AFTERNOON...BUT REMAINING
  QUITE BREEZY IN EXTREME SOUTHEAST SOUTH DAKOTA NEAR SIOUX CITY.

* RELATIVE HUMIDITY...AS LOW AS 17 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

SDZ257-112330-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0000Z/
MIDDLE BIG SIOUX RIVER VALLEY-
1028 AM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 257...

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 257.

* WINDS...SOUTH TO SOUTHWEST WINDS 15 TO 30 MPH IN THE MORNING...
  BECOMING WEST 10 TO 20 MPH THROUGH THE AFTERNOON.

* RELATIVE HUMIDITY...AS LOW AS 19 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

454 
WWUS83 KFSD 112124
RFWFSD

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
424 PM CDT TUE SEP 11 2012

...RED FLAG WARNING IN EFFECT THROUGH THIS EVENING FOR WIND AND
LOW RELATIVE HUMIDITY FOR THE ENTIRE AREA...

.A STRONG COLD FRONT SLICING ACROSS SOUTHEAST SOUTH DAKOTA AT MID
AFTERNOON WILL MOVE EASTWARD TONIGHT...AND BY EARLY THIS EVENING...
WILL STRETCH FROM THE HEART OF SOUTHWEST MINNESOTA...SOUTHWESTWARD
TO EXTREME NORTHEAST NEBRASKA. ON EITHER SIDE OF THE FRONT...
EXTREMELY DRY CONDITIONS WILL BE FOUND WITH LATE AFTERNOON RELATIVE
HUMIDITY FROM 15 TO 25 PERCENT. GUSTY SOUTHWEST WINDS AHEAD OF THE
FRONT FROM 20 TO 35 MPH WILL COMBINE WITH THE VERY LOW HUMIDITY TO
CREATE RED FLAG CONDITIONS. NORTHWEST WINDS BEHIND THE FRONT WILL
NOT BE QUITE AS STRONG...BUT STILL A GUSTY 15 TO 25 MPH. HOWEVER...
KEEP IN MIND THAT FUELS ARE EXTREMELY DRY AT ALL LOCATIONS WITH
ONGOING SEVERE TO EXTREME DROUGHT CONDITIONS.

SDZ255-256-120000-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0000Z/
LOWER BRULE AND LAKE ANDES VICINITY-MIDDLE JAMES RIVER VALLEY-
424 PM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 255 AND
256...

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONES 255 AND 
  256.

* WINDS...NORTHWEST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* RELATIVE HUMIDITY...AS LOW AS 16 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

IAZ300-301-MNZ900-NEZ249-120200-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0200Z/
NORTHERN LOESS HILLS AND FLOYD RIVER BASIN-
IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS-SOUTHWEST MINNESOTA-
EXTREME NORTHEAST NEBRASKA-
424 PM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 249...
300...301 AND 900...

* AFFECTED AREA...IN IOWA...FIRE WEATHER ZONES 300 AND 301. IN 
  MINNESOTA...FIRE WEATHER ZONE 900. IN NEBRASKA...FIRE WEATHER 
  ZONE 249.

* WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...AS LOW AS 17 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

SDZ258-120000-
/O.CON.KFSD.FW.W.0019.000000T0000Z-120912T0000Z/
LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY-
424 PM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 258...

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 258.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS UP TO 30 MPH
  SHIFTING TO THE WEST OR NORTHWEST AT 10 TO 20 MPH WITH GUSTS UP
  TO 25 MPH.

* RELATIVE HUMIDITY...AS LOW AS 16 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

SDZ257-120000-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0000Z/
MIDDLE BIG SIOUX RIVER VALLEY-
424 PM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 257...

* AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 257.

* WINDS...WEST AROUND 15 MPH WITH GUSTS UP TO 25 MPH...SHIFTING
  NORTHWEST LATE AFTERNOON.

* RELATIVE HUMIDITY...AS LOW AS 19 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

CHAPMAN

130 
WWUS83 KFSD 120004
RFWFSD

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
704 PM CDT TUE SEP 11 2012

...RED FLAG WARNING EXPIRES FOR SOUTH DAKOTA FIRE WEATHER ZONES AT
7 PM CDT...

...RED FLAG WARNING REMAINS IN EFFECT EARLY THIS EVENING ACROSS
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND EXTREME NORTHEAST
NEBRASKA FOR WIND AND LOW RELATIVE HUMIDITY...

.A STRONG COLD WAS LOCATED AT EARLY EVENING FROM NEAR TRACY
MINNESOTA...TO JUST SOUTHEAST OF SIOUX FALLS...TO NEAR YANKTON.
EXTREMELY DRY CONDITIONS WILL BE FOUND THROUGH EARLY EVENING
WITH RELATIVE HUMIDITY FROM 15 TO 25 PERCENT. GUSTY SOUTHWEST
WINDS AHEAD OF THE FRONT FROM 20 TO 30 MPH WILL COMBINE WITH THE
VERY LOW HUMIDITY TO CREATE RED FLAG CONDITIONS YET THIS EVENING
ACROSS SOUTHWEST MINNESOTA...NORTHWEST IOWA AND EXTREME NORTHEAST
NEBRASKA. WINDS ARE EXPECTED TO SLOWLY DIMINISH THROUGH THE EVENING
WITH RELATIVE HUMIDITY GRADUALLY RECOVERING ABOVE 25 PERCENT.

WINDS HAVE SHIFTED NORTHWEST BEHIND THE FRONT...BUT AFTER A BRIEF
GUSTY PERIOD AT THE PASSAGE...SHOULD SETTLE TO AROUND 10 MPH...
WHICH WILL ALLOW EXPIRING THE RED FLAG WARNING OVER THE SOUTH
DAKOTA FIRE WEATHER ZONES. HOWEVER...KEEP IN MIND THAT FUELS ARE
EXTREMELY DRY AT ALL LOCATIONS WITH ONGOING SEVERE TO EXTREME
DROUGHT CONDITIONS.

SDZ255-256-120115-
/O.EXP.KFSD.FW.W.0018.000000T0000Z-120912T0000Z/
LOWER BRULE AND LAKE ANDES VICINITY-MIDDLE JAMES RIVER VALLEY-
704 PM CDT TUE SEP 11 2012

...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 255 AND 256...

DIMINISHED WINDS OF 10 TO 15 MPH WILL ALLOW THE RED FLAG WARNING TO
EXPIRE AT 7 PM. CONDITIONS REMAIN DRY...WITH RELATIVE HUMIDITY
RECOVERING SLOWLY TO ABOVE 25 PERCENT.

$$

SDZ258-120115-
/O.EXP.KFSD.FW.W.0019.000000T0000Z-120912T0000Z/
LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY-
704 PM CDT TUE SEP 11 2012

...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 258...

A FRONTAL BOUNDARY WILL CONTINUE TO WORK THROUGH THE AREA EARLY THIS
EVENING...SHIFTING WINDS FROM SOUTHWEST TO NORTHWEST. WITH DIMINISHED
WINDS OF 15 TO 25 MPH...THIS WILL ALLOW THE RED FLAG WARNING TO
EXPIRE AT 7 PM. CONDITIONS REMAIN DRY...WITH RELATIVE HUMIDITY
RECOVERING SLOWLY TO ABOVE 25 PERCENT.

$$

SDZ257-120115-
/O.EXP.KFSD.FW.W.0018.000000T0000Z-120912T0000Z/
MIDDLE BIG SIOUX RIVER VALLEY-
704 PM CDT TUE SEP 11 2012

...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 257...

DIMINISHED WINDS OF 10 TO 15 MPH WILL ALLOW THE RED FLAG WARNING TO
EXPIRE AT 7 PM. CONDITIONS REMAIN DRY...WITH RELATIVE HUMIDITY
RECOVERING SLOWLY TO ABOVE 25 PERCENT.

$$

IAZ300-301-MNZ900-NEZ249-120200-
/O.CON.KFSD.FW.W.0018.000000T0000Z-120912T0200Z/
NORTHERN LOESS HILLS AND FLOYD RIVER BASIN-
IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS-SOUTHWEST MINNESOTA-
EXTREME NORTHEAST NEBRASKA-
704 PM CDT TUE SEP 11 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 249...
300...301 AND 900...

* AFFECTED AREA...IN IOWA...FIRE WEATHER ZONES 300 AND 301. IN 
  MINNESOTA...FIRE WEATHER ZONE 900. IN NEBRASKA...FIRE WEATHER 
  ZONE 249.

* WINDS...SOUTHWEST 16 TO 21 MPH WITH GUSTS TO AROUND 25 MPH.

* RELATIVE HUMIDITY...AS LOW AS 18 PERCENT.

* IMPACTS...BRISK WINDS...LOW HUMIDITY VALUES AND VERY DRY 
  VEGETATION WITH SEVERE OR EXTREME DROUGHT CONDITIONS...WILL 
  COMBINE TO PRODUCE HIGH FIRE IGNITION POTENTIAL AND EXPLOSIVE 
  FIRE GROWTH WITH RAPID RATES OF SPREAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

CHAPMAN

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
453 PM CDT MON SEP 10 2012

.DISCUSSION.../ISSUED AT 315 PM CDT/
MAIN FOCUS FOR TONIGHT AND TOMORROW WILL BE THE FRONTAL PASSAGE AND
HOW WARM AND WINDY IT GETS. FOR TONIGHT...WINDS WILL DROP OFF SOME
WITH SUNSET ACROSS THE AREA ALTHOUGH STILL GUSTING UP TO 20 MPH.
WITH RAPID COOLING EARLY THIS EVENING A STRONG INVERSION SHOULD SET
UP OVER THE BUFFALO RIDGE AND WITH A 40 TO 50 KT LOW LEVEL
JET...THIS WILL SET UP CONDITIONS FOR A DOWNSLOPE WIND ENHANCEMENT.
EXPECT THAT MUCH OF THE TIME AFTER MIDNIGHT WILL SEE WINDS OF 20 TO
30 MPH WITH A FEW GUSTS APPROACHING 35 MPH. THIS WILL ALSO KEEP LOWS
IN THE UPPER 60S AROUND MARSHALL. ELSEWHERE WINDS AND A FEW CIRRUS
WILL ALSO KEEP LOWS IN THE 60S WITH LOWS NEAR 70 POSSIBLE IN SOUTH
CENTRAL SOUTH DAKOTA.

ON TUESDAY...THE FRONT WILL MOVE ACROSS EASTERN SD. THE QUESTION IS
HOW FAST IT WILL DO IT. GIVEN THE INITIAL WAVE IS LIFTING NORTHEAST
INTO MANITOBA AND ONTARIO...THE UPPER LEVEL PUSH WILL DIMINISH AS
THE FRONT HEAD SOUTHEAST. AND DIURNALLY...THESE TYPE OF FRONTS CAN
SOMETIMES SLOW AS MIXING WASHES OUT THE WIND SHIFT. SO EXPECT THAT
THE FRONT WILL APPROACH I-29 TOWARD 00Z WEDNESDAY KEEPING MUCH OF
THE AREA IN THE WARM SECTOR. EXPECT WINDS ONCE AGAIN GUSTING BETWEEN
25 AND 35 MPH EAST OF THE JAMES VALLEY MUCH OF THE DAY. WITH 925 MB
TEMPS AROUND 30S...EXPECT HIGHS IN THE 90S IN THE WARM SECTOR.
BEHIND THE FRONT...NORTHWEST WINDS COULD BRIEFLY GUST TO 30 MPH
BEFORE SLOWLY DECREASING. ENOUGH MIXING RIGHT BEHIND THE FRONT TO
WARM INTO THE MID TO UPPER 80S PLACES WEST OF THE JAMES MAY ACTUALLY
SEE THEIR HIGH AROUND 18Z AND THEN STEADY TEMPS AFTER THAT AS COOLER
AIR TRIES TO MOVE IN. SEE BELOW FOR IMPACT ON FIRE WEATHER CONCERNS.

NORTHEAST FLOW IS EXPECTED TO DEVELOP ACROSS THE AREA TUESDAY NIGHT
NORTH OF THE FRONT. BAND OF 700 MB FRONTOGENESIS DEVELOPS ACROSS
CENTRAL SOUTH DAKOTA TUESDAY EVENING AND GRADUALLY SAGS SOUTH AND
EAST THROUGH THE DAY ON WEDNESDAY. DYNAMICS WILL LIKELY BE
SACRIFICED INITIALLY TO SATURATION. FRONTOGENESIS AND UPPER LEVEL
DIV Q MAXIMIZES DURING THE DAYTIME HOURS ON WEDNESDAY.  HAVE
CONTINUED CATEGORICAL POPS FOR FRONTAL BAND. LIKE OVERNIGHT SHIFT
MENTIONED...LITTLE IN THE WAY OF INSTABILITY SO FOCUS IS MAINLY ON
SHOWER ACTIVITY BUT STILL CAN NOT RULE OUT A RUMBLE OF THUNDER OR
TWO. 925 HPA TEMPS COOL DURING THE DAY DUE TO EVAPORATIVE
COOLING...WHICH SHOULD REALLY LIMIT WARMING POTENTIAL.  HAVE FAIRLY
STEADY TEMPERATURES THROUGHOUT THE DAY...WITH HIGHS IN THE CENTER OF
THE FRONTAL BAND NEARLY 10 DEGREES BELOW NORMAL.

CONTINUED THE POP MENTION IN THE SOUTHEAST WED NIGHT THOUGH THE
FORCING CONTINUES TO WEAKEN THROUGHOUT THE NIGHT.

LIGHT NORTHERLY FLOW WILL KEEP TEMPERATURES SEASONABLY COOL THURSDAY
THROUGH SATURDAY.  THE DEVELOPING LOW PRESSURE SYSTEM OVER EASTERN
IOWA/WESTERN ILLINOIS SHOULD KEEP THE PATTERN FROM EVOLVING TOO
QUICKLY.  AS RETURN FLOW SETS UP...EXPECT A GRADUAL WARMING TREND
NEXT WEEKEND INTO EARLY NEXT WEEK.

&&

.AVIATION.../FOR THE 00Z TAF ISSUANCE/
CIGS/VSBYS EXPECTED TO BE VFR THROUGH 00Z WEDNESDAY. STRONG GUSTY
WINDS WILL PREVAIL THROUGH THE EARLY EVENING WITH GUSTS OVER 30 KTS
IN MANY LOCATIONS. WINDS WILL GRADUALLY DECREASE TOWARD SUNSET.
HOWEVER...AFTER SUNSET A LOW LEVEL JET OF 35 TO 45 KTS WILL SET UP
JUST ABOVE THE SURFACE RESULTING LLWS AT ALL LOCATIONS. FOR
KHON...ONLY HAD LLWS THROUGH 10Z AS THE LOW LEVEL JET WILL SHIFT
WEST TOWARD DAWN. FOR KSUX AND KFSD...EXPECT LOW LEVEL WIND SHEAR BY
LATE EVENING AND CONTINUE THROUGH SUNRISE ON TUESDAY. THEN STRONGER
WINDS SHOULD SURFACE DURING THE MORNING...EXCEPT NEAR KHON WHICH
WILL SEE A FROPA SHORTLY AFTER 18Z WHILE KFSD WILL SEE THE WINDS
GRADUALLY LIGHTEN AND TURN TO THE WEST AND SOUTHWEST AFTER 21Z. /08

&&

.FIRE WEATHER...
AS NOTED ABOVE THE FRONT IS EXPECTED TO MOVE FROM CENTRAL SD EARLY
TUESDAY MORNING TO INTERSTATE 29 BY 00Z WEDNESDAY. WHAT IS CERTAIN
IS THAT THE ENTIRE AREA WILL SEE HIGHS IN THE 80S AND 90S RESULTING
IN AFTERNOON RELATIVE HUMIDITY AROUND 20 PERCENT. WHAT IS LESS
CERTAIN IS THE WIND ACROSS SOUTH DAKOTA. IN SW MINNESOTA AND NW
IOWA...FROPA IS EXPECTED TO BE AFTER 00Z AND WINDS WILL REMAIN
STRONG THROUGHOUT THE DAY...PERHAPS BEGINNING TO DECREASE IN SW MN
LATE AFTERNOON. FREQUENT GUSTS OVER 30 MPH ARE EXPECTED AND WITH
SUCH DRY VEGETATION WILL CONTINUE THE RED FLAG WARNING.

IN SOUTH DAKOTA...IT ALL WILL DEPEND ON THE TIMING. IF THE FRONT
SLOWS ITS EASTWARD PROGRESSION MORE...IT IS LIKELY THE ENTIRE I-29
CORRIDOR WILL SEE FREQUENT WIND GUSTS TO 30 MPH. EVEN WITH THE
CURRENT FORECAST EXPECT THAT WINDS WILL GUSTS TO 30 MPH MUCH OF THE
DAY IN THE LOWER BIG SIOUX VALLEY...INCLUDING CANTON AND
VERMILLION...AND HAVE ISSUED A RED FLAG WARNING IN FIRE WEATHER ZONE
258 EVEN THOUGH AREAS ON THE WESTERN EDGE OF THIS ZONE...SUCH AS
TYNDALL AND TRIPP MAY NOT SEE WINDS GUST OVER 25 MPH.

ELSEWHERE  HAVE DECIDED TO ISSUE A FIRE WEATHER WATCH FOR LATE
TOMORROW MORNING AND TOMORROW AFTERNOON. IN SDZ257...INCLUDING SIOUX
FALLS AND BROOKINGS...CURRENT TIMING WOULD RESULTS IN WINDS OF 25 TO
30 MPH THROUGH MID AFTERNOON. BUT IF THE FRONT IS 2 OR 3 HOURS
FASTER...WINDS WILL BEGIN DROPPING OFF BY EARLY AFTERNOON KEEPING
WINDS CLOSER TO 20 MPH.

FARTHER WEST...IT IS BOTH THE UNCERTAINTY ON FRONTAL TIMING AND
STRENGTH OF THE NORTHWEST WINDS. RIGHT BEHIND THE FRONT...WHEN
MIXING IS MAXIMIZED...WINDS COULD GUST TO 30 MPH FOR A FEW
HOURS...ESPECIALLY IN SDZ255. BUT IF THE FRONT SLOWS DOWN OR MIXING
IS LESS EFFICIENT THEN THESE WINDS WILL NOT BE REALIZED.

CONDITIONS SHOULD IMPROVE TUESDAY NIGHT AS COLDER AIR MOVES BACK
INTO THE AREA.
&&

.FSD WATCHES/WARNINGS/ADVISORIES...
IA...RED FLAG WARNING UNTIL 9 PM CDT TUESDAY FOR IAZ300-301.

MN...RED FLAG WARNING UNTIL 9 PM CDT TUESDAY FOR MNZ900.

NE...RED FLAG WARNING UNTIL 9 PM CDT TUESDAY FOR NEZ249.

SD...RED FLAG WARNING UNTIL 10 PM CDT THIS EVENING FOR SDZ255>258.

     RED FLAG WARNING FROM 10 AM TO 9 PM CDT TUESDAY FOR SDZ258.

     FIRE WEATHER WATCH FROM TUESDAY MORNING THROUGH TUESDAY EVENING
     FOR SDZ255>257.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
448 AM CDT MON SEP 10 2012

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-111200-
AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA-
CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE-
DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON-
IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN-
LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN-
OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN-
SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON-
448 AM CDT MON SEP 10 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

WIND AND FOG...
SOUTHERLY WINDS WILL BE QUITE STRONG IN THE LATE MORNING AND
AFTERNOON HOURS TODAY. FREQUENT GUSTS OF 30 TO 35 MPH CAN BE
EXPECTED...WITH GUSTS OF 40 TO 45 MPH QUITE POSSIBLE IN SOUTHWEST
MINNESOTA. THE WINDS WILL DECREASE AFTER SUNSET...BUT IT WILL
REMAIN BREEZY TONIGHT...ESPECIALLY IN SOUTHWEST MINNESOTA.

FIRE DANGER...
A RED FLAG WARNING IS IN EFFECT FOR LATE MORNING INTO MID EVENING
FOR EXTREME FIRE DANGER CONDITIONS. VERY DRY AIR...STRONG
SOUTHERLY WINDS...AND DRY VEGETATION WILL ALL COMBINE TO PRODUCE
EXPLOSIVE FIRE GROWTH CONDITIONS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

VERY HIGH TO EXTREME FIRE DANGER CONDITIONS ARE ONCE AGAIN
ANTICIPATED ON TUESDAY. THE WORST CONDITIONS WHERE RED FLAG
WARNINGS ARE ALREADY IN EFFECT WILL BE ACROSS SOUTHWEST
MINNESOTA...NORTHWEST IOWA AND EXTREME NORTHEAST NEBRASKA. THESE
AREAS WILL SEE A COMBINATION OF WIND SPEEDS OF 20 TO 35 MPH AND
VERY DRY AIR. ELSEWHERE ACROSS THE SOUTHEAST QUARTER OF SOUTH
DAKOTA...THE AIR WILL ALSO BE VERY DRY...BUT THE WIND SPEEDS WILL
BE A LITTLE LIGHTER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.WEATHER.GOV/SIOUXFALLS. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.