Area Forecast Discussion
Issued by NWS Des Moines, IA

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

FXUS63 KDMX 150454

Area Forecast Discussion
National Weather Service Des Moines IA
1054 PM CST Tue Feb 14 2017

.SHORT TERM...(tonight through Friday)
Issued at 319 PM CST Tue Feb 14 2017

...Extended Stretch of Near Record or Record Highs for Thursday-

No Hazardous WX Impacts Expected
Confidence: High

Afternoon water vapor/IR satellite imagery highlights a shortwave
moving through the upper Mississippi Valley and the Great Lakes and
another over over Oklahoma.  Locally, there were a few high clouds
caught in the upper level flow with sunny to partly sunny skies and
afternoon temperatures in the 40s and 50s.

Tonight, a cold front will push southward across Minnesota into
Iowa.  The cold front will move through dry, however will be
attended by a few clouds.  The h85 thermal trough of
-12 to -16deg C air will mainly track across Wisconsin with a
glancing blow for central Iowa and some recovery in those
temperatures by 12Z Wednesday. Temperatures in the 30s and 40s
are forecast for Wednesday. The mid tropospheric ridge from the
western High Plains builds eastward into the Central Plains
Thursday and Friday. This will result in increasing southwest flow
and much above normal temperatures in the 50s and 60s save for a
few 40s toward KMCW.

Record high temperatures Thursday and Friday are in the upper 50s
and are current forecast has highs near or above record highs.

.LONG TERM...(Friday night through Tuesday)
Issued at 319 PM CST Tue Feb 14 2017

An area of h5 low pressure that had been migrating over TX and a
strong longwave h5 trough affecting the west coast will be the
main weather features in the extended.

Friday night...the area of low press is over OK and lifts north
toward Missouri Saturday while weakening. The wet...slow moving
west coast system moves into the intermountain region and south
flow ahead of it continues to bring above normal temperatures into
Sunday. A strengthening low level jet will transport moisture
northward across the Plains in Iowa with showers and a few
thunderstorms possible mainly Monday afternoon into Monday night.

Above normal temperatures with near record or record highs are
forecast for the weekend and into early next week.


.AVIATION.../For the 06Z TAFS through 06Z Wednesday night/
Issued at 1051 PM CST Tue Feb 14 2017

Gusty winds from the northwest will subside overnight and will
rotate counter-clockwise tomorrow and blow from the south by late
Wednesday. Skies have cleared in the wake of the cold front with
VFR conditions that will continue through the TAF period at all




SHORT TERM...Zapotocny
LONG TERM...Zapotocny
AVIATION...Ansorge is the U.S. government's official web portal to all federal, state and local government web resources and services.