FNUS22 KWNS 092001

FWDDY2



Day 2 Fire Weather Outlook  

NWS Storm Prediction Center Norman OK

0301 PM CDT Fri May 09 2025



Valid 101200Z - 111200Z



...NO CRITICAL AREAS...



...Northern Plains...

Surface lee trough development across the Saskatchewan/Alberta

Canadian provinces will promote increasing south-southwest winds

across the Northern Plains Saturday. A dry boundary layer present

over receptive fuels combined with south-southwest winds of 10-20

mph will support elevated fire weather conditions across

northeastern Montana and western North Dakota where Elevated

highlights were introduced. The driest surface conditions are

expected across eastern Montana with stronger low-level winds offset

farther east in the Dakotas. 



...Southeast Arizona and far Southwest New Mexico...

Surface high pressure across the Colorado Plateau along with

inverted surface trough across Baja California will support elevated

southeast winds across southeastern Arizona and far southwest New

Mexico. Relative humidity is expected to drop close to 10 percent in

some lower elevation areas. These winds and low relative humidity,

combined with dry fuels in an area of extreme drought, supports

addition of Elevated highlights within this area.



..Williams.. 05/09/2025



.PREV DISCUSSION... /ISSUED 0158 AM CDT Fri May 09 2025/



...Synopsis...

An upper ridge will shift into the Plains on Saturday, as a compact

shortwave trough exits the Northeast. Beneath the building ridge, an

upper low will meander about the Southeastern US as the mid-level

flow pattern remains blocked. Troughing will slowly deepen over the

eastern Pacific amplifying the upper-level pattern.



...Northern Plains...

Despite the relatively stagnant upper air pattern strong flow aloft

will begin to move over the Ridge across the Rockies and into the

northern US. This will support slow deepening of a lee trough

Saturday afternoon. Low-level winds will veer to southerly and

strengthen through the weekend as dry surface conditions develop.

While widespread critical RH and winds are not expected, a few hours

of southerly gusts of 15-20 mph and RH below 35% are possible. This

appears most likely over parts of the Dakotas and western MN. As

fuels continue to dry, locally elevated fire-weather conditions may

develop. However, the lack of stronger winds and overlap with the

driest fuels should prevent more widespread concerns for Saturday.



...Please see www.spc.noaa.gov/fire for graphic product...



$$