Marine Weather Net

Chesapeake Bay from Little Creek VA to Cape Henry VA including the Chesapeake Bay Bridge Tunnel Marine Forecast


REST OF TODAY

N
WINDS
15 - 20
KNOTS

TONIGHT

NE
WINDS
10 - 15
KNOTS

THU

NE
WINDS
10
KNOTS

THU NIGHT

NE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
ANZ634 Forecast Issued: 1022 AM EST Wed Jan 22 2020

Rest Of Today...N Winds 15 To 20 Kt, Diminishing To 15 Kt Late. Waves Around 3 Ft.
Tonight...Ne Winds 10 To 15 Kt. Waves 2 To 3 Ft.
Thu...Ne Winds 10 Kt. Waves Around 2 Ft.
Thu Night...Ne Winds 5 To 10 Kt. Waves 2 To 3 Ft.
Fri...Ne Winds 10 To 15 Kt. Waves 3 To 4 Ft.
Fri Night...Se Winds 10 To 15 Kt. Waves 4 To 5 Ft. Rain.
Sat...S Winds 15 Kt, Becoming Sw In The Afternoon. Waves 4 To 5 Ft. A Chance Of Showers In The Morning.
Sat Night...W Winds 10 To 15 Kt. Waves 4 To 5 Ft.
Sun...W Winds 10 To 15 Kt. Waves 3 To 4 Ft.
Sun Night...Nw Winds 10 To 15 Kt. Waves Around 3 Ft.
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Area Forecast Discussion
National Weather Service Wakefield VA
1217pm EST Wednesday Jan 22 2020

Synopsis
Canadian high pressure moves over the area tonight, then slides off the coast late Thursday. Low pressure tracks across the region Friday night and Saturday morning. High pressure builds into the area for early next week.

Near Term - Until 6pm This Evening
As of 1030am EST Wednesday... The high will remain over the Mid-Atlantic today under weak flow aloft due to the split flow pattern. Sunny today with a few lingering clouds over coastal NE NC. Temperatures moderate toward seasonal averages, with forecast highs ranging from the low to mid 40s.

Short Term - 6pm This Evening Through Friday
As of 350am EST Wednesday... High pressure becomes centered from the Mid-Atlantic through New England tonight through Thursday as an upper ridge builds across the region. Clear and dry conditions should allow lows tonight to drop to around 20F/low 20s inland to the upper 20s/low 30s for coastal SE VA/NE NC where light low-level NNE flow persists. Mostly sunny Thursday with an increase in high clouds. Temperatures will continue to moderate with highs ranging from the mid/upper 40s N to the low 50s SE.

The upper ridge slides offshore Thursday night as a vigorous closed upper low digs across the Mississippi Valley. This will allow surface high pressure to slide offshore. High clouds continue to increase. Lows Thursday night range from the upper 20s NW to upper 30s SE, and these values will likely be achieved during the evening to early overnight hours, before becoming steady inland and rising toward the coast.

Moisture quickly overspreads the area Friday ahead of the approaching upper low. 22/00z model consensus suggest Probability of Precipitation increasing across the Piedmont during the 18-00z period, and mostly likely 21- 00z. Mainly dry in the morning, with Probability of Precipitation increasing to 30-50% over the Piedmont during the afternoon. 20-30% over the I-95 corridor, and tapering to less than 15% toward the coast. An in situ wedge will likely develop over the Piedmont, with highs ranging from the mid/upper 40s over the Piedmont, to the mid/upper 50s SE.

Long Term - Friday Night Through Tuesday
As of 350am EST Wednesday... An upper-level trough will be digging south into the Midwest/Central US Friday-Friday night. The trough will become a closed low and cut off from the main upper-level flow and slowly migrate east. As the closed low pressure aloft moves towards the east coast, it will likely stay northwest of the southern Mid-Atlantic. However, a surface low will likely develop east of the Appalachian Mountains and track from SW to NE across VA/MD. This will bring an area of rain showers through the region Friday night into Saturday morning. As the surface low moves north of the area, rain chances will diminish for Saturday afternoon/evening from south to north. However, the upper-level low will still be in the vicinity of the CWA and may give areas across central and northeastern VA and central Delmarva a few rain showers Saturday afternoon/evening. A NW, downslope, flow will begin late Saturday/Sunday and dry the area out as high pressure settles into the region from the west for the early part of next week.

Throughout the Long Term period, temperatures will be near to above average for late January. Temperatures on Friday night will range from the upper 40s across northeast NC and southeast VA to the upper 30s across central VA and MD Eastern Shore. Temperatures during the day on Saturday will be dependent upon the exact track of the surface low. Current thinking is that highs will range from the low 50s in far NW portions of the CWA to near 60F across Hampton Roads and northeast NC. However, most areas will remain in the mid-upper 50s. Low temperatures Saturday night will range from the lower 30s in the piedmont to the upper 30s over southeast VA and northeast NC. Highs Sunday through Tuesday will remain near average with temperatures in the mid 40s to lower 50s. Monday will be the coldest day with all locations expected to stay below 50 degrees. Lows Sunday night through Tuesday night will range from near 30 degrees in the NW counties to the mid-upper 30s over SE counties of the CWA.

Marine
As of 350am EST Wednesday... Strong high pressure centered over the Ohio valley will slide over to the Mid-Atlantic region today. Meanwhile, an area of low pressure sits well off the SE coast east of Florida. Winds are N/NE 15-20 kts with gusts around 25 kts for the bay, Currituck sound, central and southern coastal waters. Northern coastal waters are 5-15 kts. Waves in the bay are 3-4 ft. Seas 2-4 ft north and 4-7 ft south. Winds should gradually subside throughout the day as the high moves closer to our area and the low off the SE coast weakens and drifts further away. Expect NE winds of 5-15 kts by later this evening. SCA (Small Craft Advisory) for the bay goes until 12Z this morning, but may need to be extended a few more hours if winds continue to hover just above SCA (Small Craft Advisory) criteria. The middle coastal waters (ANZ654) SCA (Small Craft Advisory) should be allowed to drop off this afternoon, and Currituck sound SCA (Small Craft Advisory) will drop off this evening. SCA (Small Craft Advisory) for the southern coastal waters will continue into Thursday due to lingering elevated seas.

High pressure will remain in control through Thursday. Low pressure and an associated cold front will impact area waters late Friday into Saturday. This will result in SCA (Small Craft Advisory) winds/seas that will persist through the end of the weekend.

NOAA Wakefield VA Office: Watches - Warnings - Advisories
MD...None. NC...None. VA...None.
MARINE...
Small Craft Advisory until 1pm EST this afternoon for ANZ654. Small Craft Advisory until 4pm EST Thursday for ANZ656-658. Small Craft Advisory until 7pm EST this evening for ANZ633.