Area Forecast Discussion
Issued by NWS Gaylord, MI
Issued by NWS Gaylord, MI
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550 FXUS63 KAPX 150804 AFDAPX Area Forecast Discussion National Weather Service Gaylord MI 404 AM EDT Sat Jun 15 2024 .KEY MESSAGES... - Shower chances return late tonight. - Increasing potential of dangerous/extreme heat bulding across the region next week. Chances of showers and storms are expected to continue at times through the entirety of the long term forecast period. && .SHORT TERM /THROUGH TONIGHT/... Issued at 359 AM EDT Sat Jun 15 2024 Pattern Synopsis: Troughing continues to slide east of the Great Lakes and over New England today as ridging works overhead. Subsidence provided at the ridge/trough inflection point will keep building surface high pressure centered over the Great Lakes eastward as well. A weak shortwave lifting across the Midwest later this evening/tonight looks to provide sufficient forcing aloft to support an area of relatively low surface pressure that will trek west of Lake Michigan into Sunday morning. Forecast Details: Shower chances return late tonight -- Quiet weather is in store for northern Michigan once again today with high pressure centered overhead, leading to sunny skies through the afternoon. Cloud cover will begin to spread from west to east across the area this evening as the aforementioned shortwave and associated precip lifts across the Midwest. Low confidence exists at this time, but slight chance PoPs are included in tonight`s forecast as some showers from this system may work into Michigan overnight and saturate dry profiles sufficiently for some rain to reach the ground before more better rain chances arrive after the period. Otherwise, temperatures look to warm into the upper 70s and low 80s for many areas today with cooler temperatures in the low 70s anticipated across northeast lower and the eastern U.P. && .LONG TERM /SUNDAY THROUGH FRIDAY/... Issued at 359 AM EDT Sat Jun 15 2024 Shortwave midlevel troughing over the northeastern CONUS will continue to move downstream while upstream longwave ridging continues to builds across the rest of North America. Attention for the long term period remains next week as aforementioned ridging will drive high temperatures across the Great Lakes region well above normal. Midlevel height disturbances riding along the baroclinic zone will continue chances of showers and storms at times next week potentially impacting the severity of heat across the CWA. Primary Forecast Concerns/Key Messages: -Increasing potential of dangerous/extreme heat bulding across the region next week. Chances of showers and storms are expected to continue at times through the entirety of the long term forecast period: A well advertised heat wave is set to commence next week at the start of the long term and continue through the entirety of the forecast period. Southwest flow will advect a hot humid air mass from the Gulf and build temperatures into the mid/upper 80s next week, with the warmest days expected to be Monday and Tuesday (with highs potentially reaching well into the 90s). Convection driven by lingering atmospheric moisture and some height disturbances along the aformentioned ridge is expected to develop from time to time this week. The baroclinic zone is expected to remain well to the northwest of the CWA, but convection can still fire off from potential outflow boundaries or lake breezes. Subsequent thunderstorms leave some uncertainty with daytime high temperatures as low level mixing along with cloud cover could inhibit diurnal heating. Nevertheless, the majority of the long term will remain well above normal and uncomfortably warm. && .AVIATION /06Z TAFS THROUGH 06Z SUNDAY/... Issued at 1142 PM EDT Fri Jun 14 2024 High pressure crosses the area tonight. Skies will be clear, and winds will go calm. Some localized fog is possible overnight, but not as much as this morning. MBL is most likely spot to see MVFR/IFR vsbys in fog overnight. Otherwise, VFR for Saturday, once any morning fog is gone, with high clouds increasing during the day. Developing s to se winds will do battle with onshore lake breezes. && .APX WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ SHORT TERM...DJC LONG TERM...SJC AVIATION...JZ