Bettendorf, Iowa 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

715
FXUS63 KDVN 170546
AFDDVN

Area Forecast Discussion
National Weather Service Quad Cities IA IL
1246 AM CDT Thu Apr 17 2025

...06z Aviation Update...

.KEY MESSAGES...

- Isolated to scattered elevated showers and thunderstorms
  possible late tonight into Thursday morning.

- Unsettled weather pattern still looks in line for Thursday through
  Friday with some severe potential.

- Another storm system possible on Sunday.

&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 245 PM CDT Wed Apr 16 2025

Tonight, isolated to scattered elevated showers and storms will
be possible late tonight and Thursday morning as the SW LLJ of
30 to 45 kts sets up as a surface warm front remains over the
area. The development timing appears to be between 3 and 6 AM
mainly from NE MO and west central IL stretching back NW towards
Waterloo, IA in the vicinity of the boundary. Lighting and
possibly some small hail appear to be the main risks.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
Issued at 245 PM CDT Wed Apr 16 2025

Thursday, showers and storms will linger through late morning
and into the afternoon before waning as they exit northeast.
Winds will be strong out of the SE with gusts of 30 to 40 MPH at
times. Reduced POPs in general, but especially for the
afternoon with potential for several dry hours. Temperatures
will rise into the 60s to low 70s for highs.

Thursday night, there remains some uncertainty on where storms
may develop and track. The latest thinking is for development
along the cold front out in NW IA and then it tracking east into
eastern and especially NE IA in the late evening /after 10 PM/
and into the early overnight hours. The main area of concern remains
across the NW and N parts of the local CWA, with the main risks
being large hail and damaging winds.

Friday, further reduction of POPs were made as it appears the
cold front will be roughly to the MS River or east by mid day
with afternoon storm development mainly across the eastern CWA.
They could possibly even develop east out of our area. This
will be highly dependent on how things unfold Thursday night and
early Friday.

SPC has maintained the Slight (2 of 5) Risk for the western
areas for Thursday night and then across the SE half of the CWA
for Friday afternoon and night.

With the front timing, highs in the mid 60s are currently
forecast in the NW CWA with upper 70s and low 80s across the SE
two thirds.

Saturday through Tuesday, if current synoptic scale wave timing
continues, Sat would be a cooler post-frontal day with some
overrunning showers still possible in the south. Then eyes turn
to the next large wave piece to eject out of eastern
Rockies/Plains upper trof. How far north or south it goes and
phasing takes shape is still very uncertain with ongoing model
descrepancies. But late in the weekend into early next week will
be a window to watch for a potentially strong storm system to
lift out somewhere acrs the mid CONUS.

&&

.AVIATION /06Z TAFS THROUGH 06Z FRIDAY/...
Issued at 1240 AM CDT Thu Apr 17 2025

VFR cloud decks acrs the area into Thu morning with a
southeasterly sfc wind of 10-20 KTs. Increasing southerly LLJ
to 40 KTS at 2K FT AGL producing some LLVL wind shear and
mechanical turbulence overnight, with the southeast winds
getting gusty on Thursday. Isolated to sctrd high based/elevated
showers and some thunderstorms should develop just before dawn
and spread east-northeast acrs the area through midday before
moving off to the east and/or decaying. We may be then largely
precip free for most of the rest of the TAF period as a strong
capping inversion spreads acrs the area. Will have to watch for
near MVFR stratocu developing to BKN levels just under the
inversion base this afternoon into early evening. Otherwise just
mid and high deck clouds above the inversion. Sctrd to isolated
elevated storms may move in from the west after 06z Friday.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...None.
IL...None.
MO...None.

&&

$$

SHORT TERM...14
LONG TERM...14
AVIATION...12