Marine Weather Net

Choptank River to Cambridge MD and the Little Choptank River Marine Forecast




10 - 15


5 - 10


5 - 10

The Marine Weather Forecast In Detail:
ANZ541 Forecast Issued: 1033 PM EDT Sun Sep 25 2022

Rest Of Tonight...Sw Winds 15 Kt With Gusts To 20 Kt. Waves 2 Ft. Scattered Showers Late This Evening, Then Isolated Showers.
Mon...W Winds 10 To 15 Kt With Gusts To 20 Kt. Waves 2 Ft.
Mon Night...W Winds 5 To 10 Kt. Waves 1 To 2 Ft.
Tue...W Winds 5 To 10 Kt. Waves 1 Ft.
Tue Night...Nw Winds 5 To 10 Kt. Waves 1 Ft.
Wed...Nw Winds 5 To 10 Kt. Waves 1 Ft.
Wed Night...N Winds 10 Kt. Waves 1 Ft.
Thu...N Winds 10 To 15 Kt. Waves 1 Ft.
Fri...Ne Winds 10 Kt. Waves 1 Ft. A Chance Of Showers After Midnight.
SHARE THIS PAGE:           
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
908pm EDT Sunday September 25 2022

A cold front will pass through the area tonight. High pressure will build toward the area from the north and west Monday through Wednesday while an upper-level trough builds overhead. The high will build north of the area late in the week.

.NEAR TERM /UNTIL 7am MONDAY MORNING/... A large mid-level shortwave over the Great Lakes and Mid- Atlantic this evening will continue moving toward the Northeast tonight. The combination of plentiful forcing for ascent and trapped mid-level moisture is generating scattered to numerous showers across eastern OH and PA this evening. As the trough swings eastward, expect these showers to make their way into MD, northern WV, and parts of northeast VA. The main update to the forecast for this evening was keeping rain chances in through at least the middle of the overnight. Most of the activity will be showers, though a lightning storm or two is possible. The highest rain chances (30-40pct) will be in MD, lowering to around 10pct in Central VA.

Partly to mostly cloudy skies will eventually clear late tonight, except for areas along/west of the Allegheny Front where continual upslope flow generates substantial clouds cover. Overnight lows mostly be in the 50s.

.SHORT TERM /7am MONDAY MORNING THROUGH TUESDAY NIGHT/... Low pressure will pivot around eastern Canada while a large upper level trough develops across the eastern US Monday and Tuesday. Most of the time will be dry with scattered diurnal cumulus. A few showers may try to sneak across the PA border or cross the Appalachians, especially as a secondary front crosses Tuesday however. Cold advection will continue through the period, with temperatures below normal Monday night through Tuesday night.

Long Term - Wednesday Through Sunday
UL troughing will persist across the northeast US through Wednesday. H5 heigheights rise locally Wednesday afternoon/night as the trough lifts northeast and the ridge in the Atlantic builds toward the SE- US. Northwest flow will prevail Wednesday ahead of an area of high pressure. Given the cool airmass aloft with the UL trough, Wednesday may end up with a broken deck of clouds much of the day. Cannot rule out a shower or some drizzle in the mountains where saturation is more likely. As the area of high pressure builds overhead Thursday into early Friday, dry conditions are expected. With the high almost overhead, will have to monitor the potential for frost Friday morning, but contingent upon the speed of an area of low pressure that may impact the area Friday into the weekend. Confidence remains low on timing and any impacts from this area of low pressure, which is now Ian. For information about Ian, please refer to the National Hurricane Center at

Below normal temps likely for the start of the long term with temps moderating toward average next weekend. Highs toward the end of the week will be in the 60s to low 70s for most, with cooler conditions in the mountains.

Scattered showers will move across the northern Chesapeake this evening, and some of these showers could produce gusts up to 20-25 knots. Conditions dry out overnight. SCA (Small Craft Advisory) conditions will continue through Monday evening. There may be a break in the winds for some places Monday night, but additional SCAs (Small Craft Advisories) may be needed Tuesday.

As high pressure builds toward the waters Wednesday into Thu, gradient winds near SCA (Small Craft Advisory) criteria are possible.

Tides / Coastal Flooding
Anomalies this evening are around one quarter to one half of a foot above normal. These anomalies will likely hold through tonight, causing water levels to approach minor flood thresholds around times of high tide for sensitive areas. However, current trends suggest water levels will likely remain below minor flood thresholds. Therefore no advisories have been issued at this time but will continue to monitor. Westerly winds will help anomalies lower Monday.

NOAA Baltimore MD/Washington DC Office: Watches - Warnings - Advisories
DC...None. MD...None. VA...None. WV...None.

Small Craft Advisory until 6pm EDT Monday for ANZ530>543.