872 FXUS63 KDVN 030739 AFDDVNArea Forecast Discussion National Weather Service Quad Cities IA IL 239 AM CDT Fri Oct 3 2025
.KEY MESSAGES...
- Dry with unseasonably warm daytime highs through the weekend, near to potentially record-breaking on Saturday and Sunday.
- The unseasonably warm and dry conditions combined with gusty winds will lead to elevated fire weather concerns this weekend, especially for field fires.
- Increasing chances for showers and storms Sunday evening into Tuesday. Severe weather is not expected.
- A return to more seasonable early fall temperatures mid to late next week.
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.SHORT TERM /THROUGH SUNDAY/... Issued at 236 AM CDT Fri Oct 3 2025
Surface to upper level ridging is set to remain entrenched over the Ohio Valley through much of the weekend. This will lead to strengthening southerly flow/warm advection, as we`ll be situated on the backside of the ridging within a tightening pressure gradient, particularly Saturday and Sunday, as low pressure deepens while lifting from the Rockies into the Dakotas. The correspondingly stout thermal ridge immediately downstream of the low will advect toward and eventually nose into the region over the weekend. This will bring about one final crescendo of unseasonably warm daytime highs, which look to be near to potentially record breaking (upper 80s to lower 90s) on Saturday and Sunday. Please refer to the climate section below.
The core of the LLJ and strongest winds this weekend favor from Kansas to Minnesota, where wind headlines appear probable. This will be mainly to our west, but we`ll see breezy conditions develop both Saturday and Sunday with gusts 25 to 30+ mph both days with the highest winds favored west of the Mississippi River. The ongoing anomalously dry and drought conditions combined with the unseasonable warmth and gusty winds and low fuel moisture will lead to elevated fire weather concerns, especially Saturday and Sunday. At this point it doesn`t quite look like Red Flag conditions, but this will need to be monitored closely for any further decrease in RH aided by deeper mixing and stronger winds. The concern will be especially for field fires with the cropland fire danger in the very high category. Croplands are cured and with farm equipment in the field should any spark start a fire in these conditions it could lead to not only rapid fire growth, but also quick spread in the breezy conditions. Outdoor burning is strongly discouraged, and those working in fields should be extremely careful/cautious to not start a fire.
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.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... Issued at 236 AM CDT Fri Oct 3 2025
A strong cold front is still on track for early next week with some slowing noted and now a general consensus on FROPA Monday into early Tuesday. This somewhat slower progression noted will allow for a little more Gulf moisture entrainment (PWATs 1.25 to 1.5 inches) and result in a better chance for measurable rain across the region in potentially 2 rounds, the first along and ahead of the front Sunday evening/night into Monday and the second with an renewed bout of forcing and isentropic lift atop the sinking boundary Monday PM/ night into early Tuesday. Latest ECMWF and GFS ensemble 24 hour probabilities for measurable rainfall are at 70-90+ percent ending 12z Tuesday. This won`t be a drought busting rainfall, but the ECMWF and GFS ensembles point to moderate probabilities (40-50%) for parts of the area particularly central into northeast Iowa for 0.5 inch of rain and 12z LREF suggests mean rainfall of 0.5 to 0.75 inch in a corridor from Dubuque to Cedar Rapids toward Des Moines and Ottumwa. So the main takeaway is that there is some signal for pockets of beneficial rain, but unfortunately not all will see these higher amounts, and just where this axis of heavier rain (0.5"+) sets up is likely to change. Stay tuned. While some thunder will be possible as well, severe weather appears unlikely at this time given weak to modest instability pre-frontal and unfavorable juxtaposition of stronger deep layer shear progged to lag post-frontal.
One thing that is certain to be widespread is a refreshing fall-like airmass settling in behind the front for mid to late next week. Temperatures look to be much closer to seasonable normals with highs in the 60s/70s and lows in the 40s/50s Tuesday through Friday.
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.AVIATION /06Z TAFS THROUGH 06Z SATURDAY/... Issued at 1140 PM CDT Thu Oct 2 2025
VFR conditions are expected to continue through the TAF cycle, with initially mid level clouds overnight into early Friday morning with bases around 7-9kft agl mainly west of the Mississippi River. This will be followed up by SCT-BKN diurnal cumulus clouds by Friday afternoon with bases around 5-6kft agl. There is less than a 20% chance for an isolated shower developing 19z-23z within this cumulus field near to south of BRL. Winds will turn from the southwest on Friday at 5-10 kts.
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.CLIMATE... Issued at 605 PM CDT Thu Oct 2 2025
Friday October 3rd Records
Burlington....95....2006 Cedar Rapids..94....1997 Dubuque.......90....1997 Moline........95....2006
Saturday October 4th Records
Burlington....91....1938 Cedar Rapids..91....1938 Dubuque.......89....1897 Moline........91....2005
Sunday October 5th Records
Burlington....89....2007 Cedar Rapids..90....2024 Dubuque.......87....1922 Moline........89....2024
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.DVN WATCHES/WARNINGS/ADVISORIES... IA...None. IL...None. MO...None.
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SHORT TERM...McClure LONG TERM...McClure AVIATION...McClure CLIMATE...NWS
NWS DVN Office Area Forecast Discussion