(EXTRACTED FROM FXUS61 KBOX 170220)
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Short Term /through Tuesday Night/...
1015 PM update...
Overnight...Moderate confidence. Mainly VFR before midnight,
except IFR on parts of Cape Cod and on Nantucket. Should see
MVFR-IFR ceilings advect in from southeast to northwest
overnight as the boundary layer cools. Lowest ceilings most
likely across southeast New England. Most of the widespread fog
will likely be confined to the south coast, Cape, and Islands
with the southwest winds expected.
Tuesday and Tuesday night...Moderate confidence. Improvement to
MVFR to even VFR conditions should occur in most locations by
Tuesday afternoon except lower cigs/vsbys may prevail across
portions of the Cape and Islands. However, a period of
widespread showers and thunderstorms with locally torrential
rainfall are expected mainly Tuesday afternoon and night. A few
of the storms may result in localized strong wind gusts. IFR to
even LIFR conditions can be expected in the heavier showers and
thunderstorms. Lastly...a period of southwest wind gusts around
25 knots are anticipated along the coastal plain Tuesday
afternoon with good mixing near the land. Improvement should
occur from west to east after midnight.
KBOS Terminal...Moderate confidence in TAF. In question is
timing of period of possible development of overnight low
KBDL Terminal...Moderate to high confidence in TAF.
Outlook /Wednesday through Saturday/...
Wednesday through Thursday: VFR.
Thursday Night: Mainly VFR, with local IFR possible.
Friday Night: Mainly VFR, with local IFR possible. Patchy BR.
03:58 UTC |
08:58 PM Pacific |
09:58 PM Mountain |
10:58 PM Central |
11:58 PM Eastern