Area Forecast Discussion
Issued by NWS Newport/Morehead, NC

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765 FXUS62 KMHX 010459 AFDMHX Area Forecast Discussion National Weather Service Newport/Morehead City NC 1259 AM EDT Sat Jun 1 2024 .SYNOPSIS... Cooler and drier high pressure builds overhead through the weekend. High pressure then shifts offshore early next week with temps returning to around normal. && .NEAR TERM /REST OF TONIGHT/...
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As of 1255 AM Sat... Made some minor tweaks to the temps and dewpoints over the next few hours to match up with current observations, but otherwise general trend in the forecast is the same. Latest surface analysis shows high pressure is currently centered across our NW`rn zones with light and variable winds and clear skies overhead. With temps lowering to near or equal to the dewpoints tonight, there is a very low (less than 10%) chance to see some steam/ground fog especially near our inland rivers, though any impact from this ground fog would be minimal at best. Given the dry soundings, low confidence in this occuring, and the very isolated nature of any ground fog development have left fog out of the forecast for tonight. Set up is highly favorable for strong radiational cooling, and continued the trend of showing low temperatures below guidance, especially so for the Outer Banks. Given currently observed Tds in the 40s and 50s and no apparent low level moisture advection overnight, pushed forecast lows a couple degrees lower than the prior forecast with more widespread 40s inland. Only fly in the ointment is potential insulation from cirrus overhead, although right now the only areas this could potentially impact are south of Highway 70. The forecast is close to record-breaking lows...see the CLIMATE section for details.
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&& .SHORT TERM /SATURDAY/...
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As of 425 PM Fri...Meteorological summer kicks off on a slightly warmer but equally dry note as ridge continues to build overhead and high pressure remains in place. Once again, suspect guidance is running too high on Tds and knocked these down a few degrees during the afternoon hours favoring comfortable values in the low to mid 40s. With increasing low- level heights, temperatures will warm into the low to mid 80s inland, upper 70s along the coast.
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&& .LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/...
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As of 330 AM Fri...Cool high pressure remains over the area through the weekend with below normal temperatures and low humidity expected. Then, the high will slide offshore early next week with a return to a summery pattern featuring daily scattered afternoon thunderstorms and highs near normal. Saturday and Sunday...High pressure will shift offshore Sunday. Another cool night expected Saturday night due to strong radiational cooling, and lows could reach the upper 50s to low 60s inland. Monday through Thursday...High pressure will build offshore early next week allowing for a return of summer-like warmth and humidity. Increasing moisture will introduce a risk for isolated to scattered thunderstorms each afternoon with the best chances for rain (~30%) Wednesday and Thursday as weak upper level impulses move through a mostly zonal flow. Temps will return to near normal, with highs reaching the upper 80s to near 90 each day, and lows mostly in the 60s.
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&& .AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
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SHORT TERM /through Saturday night/... As of 1255 AM Sat... Expecting VFR conditions and light winds through the TAF period across ENC as high pressure builds overhead this evening and on Saturday. A few minor things to note in the aviation forecast. The first is the very low (less than 10%) chance for some steam/ground fog. If fog were to occur it would likely be between 09-12Z and at the EWN/PGV terminals given their proximity to the nearby rivers. However, given the very low threat have kept any fog mention out of the TAFs and will continue to monitor trends tonight. The second will be the potential for some gusty S`rly winds (around 15 kts) behind the seabreeze Sat afternoon. Will likely hold off on any specific mention of the seabreeze in the TAFs on this update but will plan to include some mention of gusty S`rly winds (~15 kts) at the TAF sites on the morning update. Finally as upper level moisture finally begins to stream in from the S and W Sat evening, expect some high clouds to build in Sat night though with ceilings above 15 kft no impact is expected from the incoming high clouds. LONG TERM /Sunday through Wednesday/... As of 330 AM Fri...Mostly VFR conditions are expected through the long term as high pressure remains in place across the region. However, strong overnight cooling this weekend could result in the formation of patchy fog...bringing the threat of sub-VFR visibilities to the terminals.
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&& .MARINE... SHORT TERM /Tonight and Saturday/... As of 915 PM Fri...No changes to previous thinking. Benign boating conditions to develop over area waters as high pressure expands over the area from the northwest. Earlier surge in winds is beginning to diminish to 10-20 kt this evening with winds forecast to continue diminishing overnight to 10 kt or less. Winds will become largely light and variable on Saturday as the high builds overhead. By the afternoon hours, sea breeze circulations will become the dominant driver of surface flow with south to southeasterly winds of 5-10 kt expected nearshore. Currently observed seas of 2-3 feet will remain steady through tonight, dropping to around 2 feet for all offshore waters by Saturday (except 1-2 feet nearshore). LONG TERM /Saturday PM through Wednesday/... As of 330 AM Fri...Good boating conditions expected through the weekend and into early next week with high pressure overhead. Return flow develops Sunday with winds becoming SSW at 10-15 kts. Winds then briefly strengthen to 15-20 kts Sunday night before returning to SW 10-15 kts Monday. Winds become southerly at 5-10 kts on Tuesday. Seas will be mostly 2-3 ft through the period. && .CLIMATE... Record Low temps for June 1, Saturday. LOCATION TEMP/YEAR New Bern 48/1966 (KEWN ASOS) Cape Hatteras 50/1966 (KHSE ASOS) Greenville 45/1930 (COOP - Not KPGV AWOS) Morehead City 48/1984 (COOP - Not KMRH ASOS) Kinston 42/1984 (COOP - Not KISO AWOS) Jacksonville 50/1966 (NCA ASOS) && .MHX WATCHES/WARNINGS/ADVISORIES... NC...None. MARINE...None. && $$ SYNOPSIS...MHX NEAR TERM...MS/RCF SHORT TERM...MS LONG TERM...TL/SGK AVIATION...JME/SGK/RCF MARINE...JME/SGK/MS CLIMATE...MHX