Area Forecast Discussion
Issued by NWS Grand Forks, ND

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
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 45 46 47 48 49 50
FXUS63 KFGF 160441

Area Forecast Discussion
National Weather Service Grand Forks ND
1141 PM CDT Thu Mar 15 2018

Issued at 1139 PM CDT Thu Mar 15 2018

Thin cirrus south of DVL-FAR-FFM line with clear north of it.
Winds 5-10 kts and where light temps have fallen into the mid
teens, but when enough wind exists temps holding in the 20s. Very
dry airmass in place in NE ND/NW MN so idea of some single digits
appear reasonable. for lows with teens elsewhere.


.SHORT TERM...(This evening through Friday)
Issued at 224 PM CDT Thu Mar 15 2018

As the quiet weather pattern continues, the main focus continues to
be on local variations in daytime highs and any fog potential. For
tonight and Friday, amplified ridging aloft and a dry airmass under
high pressure will build further into the Northern Plains. With
strong radiative effects from solar radiation and land cover being
the main forcing for local temperature variations in this pattern,
expect a large diurnal swing again tonight. Went slightly colder
than past forecasts with lows in the single digits to teens above
zero overnight. A deep dry layer from the lower levels to 300mb will
keep all but some drifting cirrus clouds at bay tonight. Despite
daytime snowmelt introducing some boundary layer moisture, this
significant dry layer and light east winds will likely inhibit fog
development overnight.

Expect more of the same in terms of temperatures and mostly sunny
skies for Friday, as an upper low cuts into the Central Plains and
holds quiet weather and high pressure in the Northern Plains.

.LONG TERM...(Friday night through Thursday)
Issued at 224 PM CDT Thu Mar 15 2018

The weekend continues to be under the influence of an upper level
ridge before finally beginning to flatten out Sunday night, allowing
an upper level shortwave associated with the northern stream to drop
into the northern tier an upper low moves across the
central plains.  An inverted trough associated with the central
plains sfc low will interact with the upper wave, as evident on
modeled H300-H500 Q-vector convergence, early in the week, giving
our CWA the next chance for precipitation.  Models continue to vary
on placement of the last night`s runs targeted areas west of
the valley and today`s models are hinting at the northern valley
receiving snowfall that may create the greatest impacts on Monday
and Tuesday.  The mid part of the week and beyond sees tranquil
weather return as the next high amplitude ridge sets up by 00Z


.AVIATION...(For the 06Z TAFS through 06Z Friday night)
Issued at 1139 PM CDT Thu Mar 15 2018

VFR thru the pd with winds north-northeast, shifting east 5 to 12
kts thru Friday evening.  Skies clear to scattered cirrus.




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