Area Forecast Discussion
Issued by NWS

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 45 46 47 48 49 50
-- Remove Highlighting --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KPBZ 142035 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 335 PM EST Sat Jan 14 2017 .SYNOPSIS...
-- Changed Discussion --
Wintry mix will end this evening followed by high pressure for Sunday. Warm weather will return next week.
-- End Changed Discussion --
&& .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
-- Changed Discussion --
Rain with the shortwave continues to pass over much of the region south of I-80. The HRRR has had a good handle on this, with much of the area, outside of the ridges, above freezing based on surface obs. However, a few pesky obs in the valleys through Ohio and western PA remain just at or below freezing with a large dewpoint depressions still evident. With this in mind, have extended the freezing rain and winter weather advisories across the region although widespread impact will remain low. Once the shortwave shifts east, the remaining precipitation should shift to a rain/snow mix. Some icing may still be possible in a few spots where temperatures hover near freezing, but overall concerns for further impact is low. Temperatures will be near seasonal averages overnight.
-- End Changed Discussion --
&& .SHORT TERM /6 AM SUNDAY MORNING THROUGH TUESDAY/...
-- Changed Discussion --
Ridge of high pressure will remain in control on sunday, with near average temperature expected under zonal flow. A deeper trough is progged to develop over the plains for the start of the new week. As this occurs, warm advection will resume. A warm front lifting across the region on Monday may pose additional freezing rain concerns early across points south of I-70, but with a slightly slower onset of precipitation that the last set of model runs, it appears the threat would be brief, if at all. Thus, will similar reasoning as the previous shift, will hold off on an HWO mention. A return of warm, moist air through Tuesday, ahead of the cold front, will support likely to categorical PoPs across the region based on the latest blend of guidance. Temperature will also trend above average with values almost 20 degrees above normal Tuesday.
-- End Changed Discussion --
&& .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
-- Changed Discussion --
Quick cooldown is expected on Wednesday with northwest flow rain and snow showers possible before we warm up once again through the end of the week. Used the superblend to construct most of this forecast with only minor adjustments in the latter half of the period based on the deviation in guidance values.
-- End Changed Discussion --
&& .AVIATION /20Z SATURDAY THROUGH THURSDAY/... A crossing disturbance will result in scattered precipitation and IFR restrictions through early evening south of I70 and MVFR cloud coverage north as far as I80. Conditions should improve later this evening as the shortwave and precip exit and surface high pressure begins to build. .OUTLOOK... Restrictions are possible S of PIT Sunday night with a crossing warm front, and likely areawide Tue/Wed with the approach and passage of a cold front. && .PBZ WATCHES/WARNINGS/ADVISORIES...
-- Changed Discussion --
MD...Freezing Rain Advisory until 10 PM EST this evening FOR MDZ001. OH...Winter Weather Advisory until 7 PM EST this evening FOR OHZ039>041-048>050. Freezing Rain Advisory until 7 PM EST this evening FOR OHZ057>059-068-069. PA...Winter Weather Advisory until 7 PM EST this evening FOR PAZ014- 020>023-029-073. Freezing Rain Advisory until 7 PM EST this evening FOR PAZ031- 075. Freezing Rain Advisory until 10 PM EST this evening FOR PAZ074- 076. WV...Winter Weather Advisory until 7 PM EST this evening FOR WVZ001>003. Freezing Rain Advisory until 7 PM EST this evening FOR WVZ004.
-- End Changed Discussion --
&& $$

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.