####018004393####
FNUS63 KFSD 110958

RFDFSD



Rangeland Fire Danger Statement

National Weather Service Sioux Falls SD

458 AM CDT Thu Apr 11 2024



.DISCUSSION...

Issued at 435 AM CDT Thu Apr 11 2024



Continued mild, breezy, and dry conditions this afternoon will 

lead to elevated to locally critical fire weather. Similar to

yesterday, deeper mixing along with a tightening SPG will lead 

to increasing northwesterly winds with gusts between 35-45 mph 

starting as early as the late morning. As more dry air gets 

transported to the surface, dew point will gradually decrease 

leading to RH values between 20-30 percent with a sharp gradient

occurring along a Huron-Sioux Falls-Ida Grove, IA line 

westwards. With all this in mind, parts of the Fire Weather 

Watch mainly across portions of southeastern SD, northwestern 

IA, and far northeastern NE have been converted to a Red Flag 

Warning since the stronger winds can overcome the slightly 

higher RH values. However, with cloud cover expected to increase

across areas east of the previously mentioned line with the 

potential precipitation chances this afternoon; decided to leave

part of the watch in place just in case further expansion is 

needed.



While Friday will likely provide some temporary relief from any

fire weather concerns, elevated fire weather conditions will 

return on both Saturday and Sunday as the warmer temperatures and

breezy southerly winds increase fire danger potential.



Limit any activities that could create a spark due to very to

extreme fire danger.





NEZ013-014-111300-

Dixon-Dakota-



...EXTREME FIRE DANGER...



The Grassland Fire Danger Index will reach the extreme category 

this afternoon. Extreme weather conditions and very low 

moisture content of grasses, and other dry organic material 

on the ground, indicate that critical burning conditions exist. 

All fires have the potential to become large and spread quickly, 

becoming erratic with extreme behavioral characteristics. 

No outdoor burning should take place.



OUTLOOK FOR FRIDAY AFTERNOON...The Grassland Fire Danger Index

will reach the moderate category. 



The grassland fire danger product reflects fire danger for native

grasses. It is not intended for cured agricultural crops, nor

will it reflect conditions in road ditches which have been mowed.





$$



IAZ012>014-020>022-031-032-SDZ038-050-052>054-057>061-063>071-

111300-

Sioux-O'Brien-Clay-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-

Beadle-Gregory-Jerauld-Sanborn-Miner-Brule-Aurora-Davison-Hanson-

McCook-Charles Mix-Douglas-Hutchinson-Turner-Lincoln-Bon Homme-

Yankton-Union-



...VERY HIGH FIRE DANGER...



The Grassland Fire Danger Index will reach the very high 

category this afternoon. Very poor weather conditions and 

very low moisture content of grasses, and other dry 

organic material on the ground, indicate that dangerous 

burning conditions exist. Fires will spread rapidly and 

show erratic behavior. Outdoor burning is not recommended.



OUTLOOK FOR FRIDAY AFTERNOON...The Grassland Fire Danger Index

will reach the moderate category. 



The grassland fire danger product reflects fire danger for native

grasses. It is not intended for cured agricultural crops, nor

will it reflect conditions in road ditches which have been mowed.





$$



IAZ001>003-MNZ071-072-080-081-089-090-097-098-SDZ039-040-055-056-

062-111300-

Lyon-Osceola-Dickinson-Lincoln-Murray-Cottonwood-Nobles-Jackson-

Pipestone-Rock-Kingsbury-Brookings-Lake-Moody-Minnehaha-



...HIGH FIRE DANGER...



The Grassland Fire Danger Index will reach the high category 

this afternoon. Unfavorable weather conditions and low 

moisture content of grasses, and other dry organic material 

on the ground, indicate that there is a high potential for 

a fire to spread.. Outdoor burning should be restricted to 

early morning or evening hours, when wind speeds are usually 

lower and the relative humidity is higher.



OUTLOOK FOR FRIDAY AFTERNOON...The Grassland Fire Danger Index

will reach the moderate category. 



The grassland fire danger product reflects fire danger for native

grasses. It is not intended for cured agricultural crops, nor

will it reflect conditions in road ditches which have been mowed.





$$