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FNUS63 KFSD 110902

RFDFSD



Rangeland Fire Danger Statement

National Weather Service Sioux Falls SD

402 AM CDT Sun May 11 2025



.DISCUSSION...

Issued at 348 AM CDT Sun May 11 2025



Hot, very dry, and breezy conditions will result in critical to near-

critical fire weather conditions for today. Highs will climb to much 

above normal levels - in the upper 80s to lower 90s. This combined 

with afternoon dewpoints around 40 will yield RH values of 15 to 20 

percent. Southerly winds will increase through the day, gusting 30 

to 40 mph in the afternoon and early evening - with the lighter 

winds being over northwest Iowa. Because of this, A Red Flag Warning 

remains in effect over southeast South Dakota, southwest Minnesota, 

and parts of northwest Iowa from late morning to late evening.



Monday and Tuesday will have similar conditions, though winds may be 

slightly lighter. At the same time, low level moisture will be 

gradually increasing - most notably on Tuesday when dewpoints rise 

into the upper 40s to lower 50s. With afternoon RH values again 

ranging from 15 to 20 percent on Monday, a Fire Weather Watch 

remains in effect for the same area above for much of the day into 

the evening. With the higher dewpoints on Tuesday, yielding 

afternoon RH of 20 to 30 percent, the fire danger is a bit more 

uncertain - so no headlines are currently in effect for that day.



Of note with regard to the above, the fire danger through the period 

will vary greatly over a small distances - dependent on the 

greenness of local vegetation.



People are urged to exercise extreme care with respect to outdoor

activities that could cause grass fires. Avoid equipment that can

cause sparks near dry grass or brush. Do not toss cigarettes on

the ground. Report new fires quickly to the nearest fire

department or law enforcement office.



IAZ001-MNZ071-072-080-081-089-097-098-SDZ038-040-052>062-064>067-

070-111215-

Lyon-Lincoln-Murray-Cottonwood-Nobles-Pipestone-Rock-Beadle-

Brookings-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-

Hanson-McCook-Minnehaha-Douglas-Hutchinson-Turner-Clay-



...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 MONDAY AFTERNOON...The Grassland Fire Danger Index

will reach the very high 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.





$$



IAZ002-003-012-013-MNZ090-NEZ013-SDZ039-050-063-068-069-071-

111215-

Osceola-Dickinson-Sioux-O'Brien-Jackson-Dixon-Kingsbury-Gregory-

Charles Mix-Bon Homme-Yankton-Union-



...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 MONDAY AFTERNOON...The Grassland Fire Danger Index

will reach the high 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.





$$



IAZ014-020>022-031-032-NEZ014-111215-

Clay-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Dakota-



...MODERATE FIRE DANGER...



The Grassland Fire Danger Index will reach the moderate 

category this afternoon. Marginal weather conditions or 

lowering moisture content of grasses, and other dry organic 

material on the ground, indicate that there is some potential 

for a fire to spread. Any outdoor burning should be closely 

monitored.



OUTLOOK FOR MONDAY 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.





$$