Area Forecast Discussion
Issued by NWS Gaylord, MI
Issued by NWS Gaylord, MI
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382 FXUS63 KAPX 141732 AFDAPX Area Forecast Discussion National Weather Service Gaylord MI 132 PM EDT Fri Jun 14 2024 .KEY MESSAGES... - Sunny skies, mild temperatures today. - Temperatures begin to build this weekend through the entirety of the long term. Watching for potential record breaking highs by midweek next week. && .UPDATE... Issued at 957 AM EDT Fri Jun 14 2024 Northwesterly flow returning to the Upper Great Lakes this morning in the wake of yesterday`s cold front, now poised across the OH Valley. PV niblet slipping by to our north over Ontario...dragging a subtle trough/cold front into the EUP; remainder of this trough extends back up into the Canadian Prairies ahead of strengthening ridge axis over the western US. Meanwhile...vort max over WI beneath left exit region of a 100+kt upper level jet with attendant band of mid clouds...and even a few sprinkles this morning upstream over WI. Otherwise...generally quiet over the region...and much cooler/drier than yesterday, with pwats much closer to, or even slightly below, normal. 850mb temps near or slightly below zero to our northeast over Ontario. Anticipating trough axis to our northeast to slip across the area...but upstream warm advection should help the ridge axis prevail today/tonight...with general high pressure as a result. NW- SE oriented PV max over WI should slowly slip southeastward today...keeping some potential for mid-clouds around NW Lower through the remainder of the afternoon and perhaps beyond. Not expecting much in the way of precip from this mid-cloud deck, given generally dry atmosphere...though some sprinkles and/or light rain should make it to the ground (already seeing -RA in the KFKS (Frankfort) 1335z ob...with Frankfort area webcams showing some signs of virga/rain shafts). Presence of PV niblet to our northeast /may/ prevent lake breeze development along the Lake Huron coast...but already seeing winds veer at coastal observing sites near APN as we begin to warm up. && .SHORT TERM /THROUGH TONIGHT/... Issued at 251 AM EDT Fri Jun 14 2024 Pattern Synopsis: Longwave troughing stretching from Hudson Bay down over the Great Lakes will continue to progress eastward today as the associated surface cyclone treks northeast across Quebec. Increasingly amplified ridging will fold over the region tonight, providing subsidence aloft that will build surface high pressure from the northern Great Plains overhead by Saturday morning. Forecast Details: Sunny skies, mild temperatures today -- Quiet weather is in store for northern Michigan today and tonight as aforementioned high pressure builds into the region. North winds will advect cooler, drier air into the region today with sunny skies in place underneath subsidence aloft. Winds aren`t expected to gust as high as they did Thursday, but gusts to around 20 mph will be possible at times through the afternoon. Highs look to warm into the mid to upper 70s for most areas today with slightly cooler temperatures anticipated across the eastern U.P. and along the immediate lakeshores. Calm winds and clear skies will lead to efficient radiational cooling tonight, allowing for overnight temperatures to drop well into the 40s across interior northern lower. && .LONG TERM /SATURDAY THROUGH THURSDAY/... Issued at 251 AM EDT Fri Jun 14 2024 Weak midlevel long wave troughing over the northern half of North America continues the pattern of mostly quiet weather with chances of showers at times. Upstream midlevel shortwave riding over the Pacific northwest will begin to build and progress across the country, eventually causing surface high pressure to deliver clear/sunny skies and pleasant weather for the weekend. Aformentioned riding will continue to occupy the eastern half of North America and allow for temperatures to surge well above normal across the Great Lakes region for mid June. Embedded height disturbances and the advection of a (somewhat) humid air mass to the region will continue chances of showers at times next week, but impacts regarding precipitation remain low. Primary Forecast Concerns/Key Messages: -Temperatures begin to build this weekend through the entirety of the long term. Watching for potential record breaking highs by midweek next week: Aformentioned midlevel ridging with an embedded jet maxima will begin to advect northward and reach the southern shore of Hudson Bay by the Wednesday timeframe. Biggest story of the long term is the well advertised incoming heat as surface temperatures slowly climb throughout the entirety of the forecast period. Warmest days for the CWA remain Monday through Thursday as daytime highs are expected to surge into the upper 80s to low 90s for most locations. One issue that could tamper temperatures next week is the potential of convective storms at times, mixing warm surface temperatures with cooler low level temps. Guidance continues to keep H8 temperatures around 20 degrees Celsius, so proper mixing with a potential MCS or even strong enough winds could greatly reduce forecasted high temperatures. As for precipitation impacts, no heavy rainfall or severe weather is expected at this time. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 131 PM EDT Fri Jun 14 2024 Winds generally NW-NE at 5-15kt, gusting 15-20kts...as we mix higher than expected today. Decent cu field trying to hold on this afternoon, but struggling...cigs could drop periodically to SCT/BKN040, to perhaps as low as SCT030. Onshore lake breezes developing...esp south of KAPN along the Lake Huron coast, though KAPN could get in on this as well through afternoon. Expecting winds to diminish/skies to clear tonight...as high pressure slips overhead. Have gone ahead and included mention of fog/br at MBL overnight, though possible this could develop at other TAF sites including CIU, APN in particular. Nothing widespread expected, though. Winds become more E/SE Saturday AM, eventually shifting to SW toward end of TAF period or beyond...with increase in mid/high clouds from W to E through the day. && .APX WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ UPDATE...FEF SHORT TERM...DJC LONG TERM...SJC AVIATION...FEF