320
FXUS63 KDVN 201822
AFDDVN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
122 PM CDT SUN SEP 20 2026
KEY MESSAGES
- THE WIDESPREAD HEAVY RAINS ARE OVER, THOUGH A SMALL UPPER LOW
WILL CONTINUE TO SPIN NEAR OUR LOCAL AREA WITH SHOWERS, WEAK THUNDERSTORMS
AND MOST CERTAINLY COOL CLOUDY CONDITIONS. THROUGH TUESDAY
MORNING.
- EXPECTATIONS FOR SEVERAL BEAUTIFUL EARLY FALL DAYS ARE GROWING
FOR MID WEEK, WITH HIGHS IN THE 60S AND LOWS IN THE 40S-50S.
SHORT TERM /THROUGH MONDAY NIGHT/
ISSUED AT 117 PM CDT SUN SEP 20 2026
THE ONGOING AREAL FLOOD WARNINGS WILL CONTINUE THROUGH EARLY
AFTERNOON, AS SEVERAL CREEKS ARE KNOWN TO BE FLOODING IN EASTERN
IOWA, INCLUDING INDIAN CREEK IN LINN COUNTY. THOUGH SOME FLOODING
WILL CONTINUE, THE WATER WAS REPORTED TO HAVE STOPPED RISING EARLY
THIS MORNING, AND IMPACTS WILL BE IMPROVING THIS AFTERNOON/EVENING,
RESULTING IN EXPIRATIONS OF THE FLOOD WATCH, AND AREAL FLOOD
WARNINGS.
ADDITIONAL RAIN THE NEXT 24 HOURS. IN THE SHORT TERM WILL BE VERY
LIGHT, AND UNDER 0.25 WITH CERTAINTY. HOWEVER, AS IS OFTEN THE CASE
IN COOL SEASON EVENTS, THIS WILL BE A HIGH POP, LOW QPF EVENT TODAY,
AND AGAIN MONDAY/MONDAY NIGHT LEADING TO AN OVERALL WET PERIOD
CONTINUING THROUGH THROUGH TUESDAY MORNING.
TONIGHT THROUGH MONDAY NIGHT, GENERALLY COOL, CLOUDY CONDITIONS WITH
NORTHEAST WINDS AT 10 TO 15 MPH WILL CONTINUE. LOWS IN THE UPPER
40S TO MID 50S CAN BE EXPECTED. HIGHS UNDER THE CLOUDS, MUCH LIKE
TODAY, WILL STRUGGLE TO REACHING THE MID 60S.
LONG TERM /TUESDAY THROUGH SATURDAY/
ISSUED AT 117 PM CDT SUN SEP 20 2026
THE MID WEEK, THE FLOW ALOFT IS LESS PREDICTABLE IN A MESSY BLOCKY
PATTERN, BUT FOR US, THE SURFACE IS EXPECTED TO BE MAINLY DRY, WITH
TEMPERATURES RISING TO THE MID 60S TO LOWER 70S, AND LOWS IN THE 40S
TO MID 50S.
LOOKING OUT TOWARDS NEXT WEEKEND, WE ARE EXPECTING TEMPERATURES TO
WARM INTO THE UPPER 60S TO MID 70S, WHICH IS NEAR SEASONAL
NORMALS.
AVIATION /18Z TAFS THROUGH 18Z MONDAY/
ISSUED AT 1207 PM CDT SUN SEP 20 2026
PERSISTENT MVFR CIGS WILL CONTINUE AS AN UPPER LOW AND SURFACE
LOW REMAIN NEARBY THE AREA. NORTHEAST WINDS WILL BRING IN PLENTY
OF STRATUS FROM LAKE MICHIGAN, AS WELL AS SUPPORTED BY WET
CONDITIONS FOLLOWING OUR RECENT HEAVY RAINS. THERE WILL BE
OCCASIONAL LIGHT DRIZZLE OR LIGHT RAIN AT TIMES, ESPECIALLY THIS
AFTERNOON, WHICH COULD DROP VISIBILITIES BRIEFLY TO AROUND 3
MILES. SLIGHTLY DRIER AIR ARRIVING MONDAY MORNING SHOULD ALLOW
FOR CONSISTENTLY VFR VISIBILITY THIS EVENING AND OVERNIGHT, BUT
THE CIGS ARE NOT EXPECTED TO IMPROVE BEYOND THE 1000 TO 1500
RANGE.
DVN WATCHES/WARNINGS/ADVISORIES
IA...NONE.
IL...NONE.
MO...NONE.
SHORT TERM...ERVIN
LONG TERM...ERVIN
AVIATION...ERVIN
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