Marine Weather and Tide Forecast for Mayo, MD
February 17, 2025 3:20 PM EST (20:20 UTC) Change Location
![]() | Sunrise 6:52 AM Sunset 5:47 PM Moonrise 10:57 PM Moonset 9:04 AM |
ANZ532 Chesapeake Bay From Sandy Point To North Beach- 137 Pm Est Mon Feb 17 2025
.gale warning in effect until 6 pm est this evening - .
This afternoon - W winds 20 kt with gusts to 35 kt. Waves 3 ft.
Tonight - NW winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
Tue - NW winds 15 kt with gusts to 25 kt. Waves 2 ft.
Tue night - NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Wed - N winds 5 to 10 kt. Waves 1 to 2 ft. A chance of snow.
Wed night - N winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves 1 ft. Snow likely.
Thu - NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow showers in the morning.
Fri - NW winds 15 to 20 kt. Waves 2 to 3 ft.
ANZ500 137 Pm Est Mon Feb 17 2025
Synopsis for the tidal potomac and md portion of the chesapeake bay -
an expansive arctic high pressure will build into the north-central u.s. This week. Meanwhile, an area of low pressure will take shape over the mississippi river valley by mid week, then track to the carolinas and off the east coast Wednesday into Thursday. High pressure will take over late in the week. Small craft advisories will likely be needed through Tuesday.
an expansive arctic high pressure will build into the north-central u.s. This week. Meanwhile, an area of low pressure will take shape over the mississippi river valley by mid week, then track to the carolinas and off the east coast Wednesday into Thursday. High pressure will take over late in the week. Small craft advisories will likely be needed through Tuesday.

NEW! Add second zone forecast
Shady Side Click for Map Mon -- 01:46 AM EST -0.11 feet Low Tide Mon -- 06:54 AM EST Sunrise Mon -- 07:49 AM EST 0.79 feet High Tide Mon -- 09:04 AM EST Moonset Mon -- 02:28 PM EST 0.05 feet Low Tide Mon -- 05:46 PM EST Sunset Mon -- 07:55 PM EST 0.66 feet High Tide Mon -- 10:56 PM EST Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |   |
Shady Side, West River, Maryland, Tide feet
12 am |
0 |
1 am |
-0.1 |
2 am |
-0.1 |
3 am |
-0 |
4 am |
0.1 |
5 am |
0.4 |
6 am |
0.6 |
7 am |
0.7 |
8 am |
0.8 |
9 am |
0.7 |
10 am |
0.6 |
11 am |
0.4 |
12 pm |
0.2 |
1 pm |
0.1 |
2 pm |
0.1 |
3 pm |
0.1 |
4 pm |
0.1 |
5 pm |
0.3 |
6 pm |
0.5 |
7 pm |
0.6 |
8 pm |
0.7 |
9 pm |
0.6 |
10 pm |
0.5 |
11 pm |
0.3 |
Baltimore Harbor Approach Click for Map Mon -- 02:03 AM EST -0.75 knots Max Ebb Mon -- 05:09 AM EST 0.00 knots Slack Mon -- 06:54 AM EST Sunrise Mon -- 08:31 AM EST 0.86 knots Max Flood Mon -- 09:03 AM EST Moonset Mon -- 11:58 AM EST -0.00 knots Slack Mon -- 02:55 PM EST -0.65 knots Max Ebb Mon -- 05:45 PM EST Sunset Mon -- 06:09 PM EST 0.00 knots Slack Mon -- 08:46 PM EST 0.45 knots Max Flood Mon -- 10:56 PM EST Moonrise Mon -- 11:23 PM EST -0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |   |
Baltimore Harbor Approach, Maryland Current, knots
12 am |
-0.4 |
1 am |
-0.7 |
2 am |
-0.8 |
3 am |
-0.7 |
4 am |
-0.4 |
5 am |
-0.1 |
6 am |
0.3 |
7 am |
0.7 |
8 am |
0.8 |
9 am |
0.8 |
10 am |
0.7 |
11 am |
0.4 |
12 pm |
-0 |
1 pm |
-0.3 |
2 pm |
-0.6 |
3 pm |
-0.6 |
4 pm |
-0.6 |
5 pm |
-0.3 |
6 pm |
-0 |
7 pm |
0.2 |
8 pm |
0.4 |
9 pm |
0.4 |
10 pm |
0.3 |
11 pm |
0.1 |
Area Discussion for Baltimore, MD/Washington
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FXUS61 KLWX 171530 AFDLWX
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1030 AM EST Mon Feb 17 2025
SYNOPSIS
An expansive Arctic high pressure will build into the north- central U.S. this week. Meanwhile, an area of low pressure will take shape over the Mississippi River Valley by mid week, then track to the Carolinas and off the East Coast Wednesday into Thursday. High pressure will take over late in the week.
NEAR TERM /THROUGH TUESDAY/
Winds remain elevated with gusts of 40 to 55 mph over the higher elevations and near/north of I-66/US-50. This is where Wind Advisories remain in effect until midday. A few areas may need an extension to the advisory, but in general, forecast soundings show less wind available in the boundary layer to mix down by this afternoon (30 to 40 mph gusts likely remain common).
West of the Allegheny Front, snow showers will gradually diminish through early afternoon, but blowing and drifting snow will remain an issue through the day.
Cold weather is expected tonight, and with lows dropping into the single digits and blustery conditions continuing, areas along and west of the Allegheny Front will see wind chills around 10 to 15 degrees below zero. Further east, wind chills will be in the teens and single digits above zero.
A surface ridge extending from a large Arctic high over the northern Plains will expand into the Mid-Atlantic Tuesday. Winds will continue to gradually diminish, with daytime gusts of 20 to 30 mph possible east of the mountains.
SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/
Low pressure will take shape over the Mid South Tuesday night into Wednesday. The latest trend in guidance continues to show more separation between a southern stream wave and a northern stream upper low with less phasing. Have trended the forecast in this direction with generally the I-64 corridor to southern MD and south seeing the best chance for several inches of snow from the southern stream wave as it passes off the Carolinas. Further north, snow still appears plausible at some point as the northern stream upper low pivots overhead late Wednesday into Thursday. Overall, probabilities have trended down for significant snow especially north of I-66 and west of I-95 for this system. That's not to say that impactful snow (i.e. bursts of snow showers in a cold environment) won't occur, but the chances of warning level snow have greatly diminished further north and west. Will continue to monitor the deep northern stream upper low - if it can maintain enough depth and attain a negative tilt before the southern stream wave is too far offshore, snow could develop along an inverted trough.
LONG TERM /FRIDAY THROUGH SUNDAY/
A couple of lingering upslope snow showers in the Appalachians Thursday evening will fade away later Thursday night into early Friday. High pressure will build in from the west Friday through Saturday. Dry and chilly conditions expected through this period.
Highs Friday and Saturday will be about 10 degrees below average with highs in the middle to upper 30s. Lows will also be about 10 to maybe 15 degrees below average bottoming out in the lower 20s.
The high pressure center will move to the East Coast to allow for a modifying southerly wind to develop Saturday night and persist through the day on Sunday. Temperatures will still be on the chilly side with highs making their way to near 40 degrees with colder readings in the west Saturday and Sunday.
There are large model disagreements for Sunday as to if or when the next low pressure system develops and attempts to affect the region with wintry weather. The GFS shows a developing low pressure system over the Southeast U.S. moving into our region from the southwest and bringing a wintry mix to our western half of our region and rain to our eastern half late Sunday into Monday. The EUROPEAN model barely shows any low pressure system near us at all Sunday into Monday with maybe a hint of one moving out to sea near the North and South Carolina Coasts. The CANADIAN model shows a low pressure system moving across the Southeast U.S., then out to sea as it intensifies pivoting north toward New England. There is plenty of time to determine which model leans correct, but know that we should still see below normal temperatures during the period of this possible low pressure system and that winter is not over.
In terms of timing, it currently looks like the bulk of the snow that does fall will occur Wednesday afternoon through Wednesday night, with some low end potential for some lighter snow lingering into Thursday morning. Models are in good agreement that colder air will filter into the area in northwesterly flow behind the departing system. High temperatures will struggle to reach freezing on Thursday, and then drop back into the single digits and teens Thursday night.
Winds chills are expected to bottom out in the single digits above/below zero late Thursday night. Dry conditions and continued below average temperatures are expected for Friday and Saturday. High temperatures are forecast to be in the 30s for most (20s mountains), with lows in the teens to near 20.
AVIATION /16Z MONDAY THROUGH FRIDAY/
While wind gusts have dropped some since yesterday evening, gusts do persist in the 30 to 45 knot range. Post-frontal wave clouds continue but are becoming more scattered. By this afternoon, sustained winds should drop closer to 15-20 kt with gusts to 35 kt, before diminishing further after sunset.
VFR conditions will continue through Tuesday, with 20 kt gusts returning during the daylight hours.
Sub-VFR conditions appear less likely for northern terminals along with lower snow potential Wednesday afternoon into Thursday. Improvement back to VFR conditions is expected by Thursday afternoon. Winds are forecast to be out of the north on Wednesday, and then northwest on Thursday into Friday.
MARINE
A large area of high pressure will descend into the north- central U.S. Since the high won't be directly overhead, winds will only gradually diminish through Tuesday. Gale Warnings continue through this afternoon. Small Craft Advisories may be needed for portions of the waters through Tuesday night.
Low pressure passing to the south may bring snow, especially in the vicinity of southern Maryland late Wednesday into Thursday.
Northerly winds are expected on Wednesday. Winds will shift to northwesterly late Wednesday night into Thursday. SCA gusts appear likely during that time. Winds diminish Friday.
LWX WATCHES/WARNINGS/ADVISORIES
DC...Wind Advisory until noon EST today for DCZ001.
MD...Gale Warning until 4 PM EST this afternoon for MDZ008.
Wind Advisory until noon EST today for MDZ003>006-008-011-013- 014-501>508.
Blizzard Warning until 3 PM EST this afternoon for MDZ001.
Cold Weather Advisory from 10 PM this evening to 10 AM EST Tuesday for MDZ001.
Winter Weather Advisory until 3 PM EST this afternoon for MDZ501.
VA...Wind Advisory until noon EST today for VAZ025>031-040-053-054- 501-503>508-526.
Winter Weather Advisory until 3 PM EST this afternoon for VAZ503.
WV...Wind Advisory until noon EST today for WVZ050>053-055-502>504- 506.
Blizzard Warning until 3 PM EST this afternoon for WVZ501-505.
Cold Weather Advisory from 10 PM this evening to 10 AM EST Tuesday for WVZ501-505.
Winter Weather Advisory until 3 PM EST this afternoon for WVZ503.
MARINE...Gale Warning until 4 PM EST this afternoon for ANZ530>543.
Wind Advisory until noon EST today for ANZ530.
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1030 AM EST Mon Feb 17 2025
SYNOPSIS
An expansive Arctic high pressure will build into the north- central U.S. this week. Meanwhile, an area of low pressure will take shape over the Mississippi River Valley by mid week, then track to the Carolinas and off the East Coast Wednesday into Thursday. High pressure will take over late in the week.
NEAR TERM /THROUGH TUESDAY/
Winds remain elevated with gusts of 40 to 55 mph over the higher elevations and near/north of I-66/US-50. This is where Wind Advisories remain in effect until midday. A few areas may need an extension to the advisory, but in general, forecast soundings show less wind available in the boundary layer to mix down by this afternoon (30 to 40 mph gusts likely remain common).
West of the Allegheny Front, snow showers will gradually diminish through early afternoon, but blowing and drifting snow will remain an issue through the day.
Cold weather is expected tonight, and with lows dropping into the single digits and blustery conditions continuing, areas along and west of the Allegheny Front will see wind chills around 10 to 15 degrees below zero. Further east, wind chills will be in the teens and single digits above zero.
A surface ridge extending from a large Arctic high over the northern Plains will expand into the Mid-Atlantic Tuesday. Winds will continue to gradually diminish, with daytime gusts of 20 to 30 mph possible east of the mountains.
SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/
Low pressure will take shape over the Mid South Tuesday night into Wednesday. The latest trend in guidance continues to show more separation between a southern stream wave and a northern stream upper low with less phasing. Have trended the forecast in this direction with generally the I-64 corridor to southern MD and south seeing the best chance for several inches of snow from the southern stream wave as it passes off the Carolinas. Further north, snow still appears plausible at some point as the northern stream upper low pivots overhead late Wednesday into Thursday. Overall, probabilities have trended down for significant snow especially north of I-66 and west of I-95 for this system. That's not to say that impactful snow (i.e. bursts of snow showers in a cold environment) won't occur, but the chances of warning level snow have greatly diminished further north and west. Will continue to monitor the deep northern stream upper low - if it can maintain enough depth and attain a negative tilt before the southern stream wave is too far offshore, snow could develop along an inverted trough.
LONG TERM /FRIDAY THROUGH SUNDAY/
A couple of lingering upslope snow showers in the Appalachians Thursday evening will fade away later Thursday night into early Friday. High pressure will build in from the west Friday through Saturday. Dry and chilly conditions expected through this period.
Highs Friday and Saturday will be about 10 degrees below average with highs in the middle to upper 30s. Lows will also be about 10 to maybe 15 degrees below average bottoming out in the lower 20s.
The high pressure center will move to the East Coast to allow for a modifying southerly wind to develop Saturday night and persist through the day on Sunday. Temperatures will still be on the chilly side with highs making their way to near 40 degrees with colder readings in the west Saturday and Sunday.
There are large model disagreements for Sunday as to if or when the next low pressure system develops and attempts to affect the region with wintry weather. The GFS shows a developing low pressure system over the Southeast U.S. moving into our region from the southwest and bringing a wintry mix to our western half of our region and rain to our eastern half late Sunday into Monday. The EUROPEAN model barely shows any low pressure system near us at all Sunday into Monday with maybe a hint of one moving out to sea near the North and South Carolina Coasts. The CANADIAN model shows a low pressure system moving across the Southeast U.S., then out to sea as it intensifies pivoting north toward New England. There is plenty of time to determine which model leans correct, but know that we should still see below normal temperatures during the period of this possible low pressure system and that winter is not over.
In terms of timing, it currently looks like the bulk of the snow that does fall will occur Wednesday afternoon through Wednesday night, with some low end potential for some lighter snow lingering into Thursday morning. Models are in good agreement that colder air will filter into the area in northwesterly flow behind the departing system. High temperatures will struggle to reach freezing on Thursday, and then drop back into the single digits and teens Thursday night.
Winds chills are expected to bottom out in the single digits above/below zero late Thursday night. Dry conditions and continued below average temperatures are expected for Friday and Saturday. High temperatures are forecast to be in the 30s for most (20s mountains), with lows in the teens to near 20.
AVIATION /16Z MONDAY THROUGH FRIDAY/
While wind gusts have dropped some since yesterday evening, gusts do persist in the 30 to 45 knot range. Post-frontal wave clouds continue but are becoming more scattered. By this afternoon, sustained winds should drop closer to 15-20 kt with gusts to 35 kt, before diminishing further after sunset.
VFR conditions will continue through Tuesday, with 20 kt gusts returning during the daylight hours.
Sub-VFR conditions appear less likely for northern terminals along with lower snow potential Wednesday afternoon into Thursday. Improvement back to VFR conditions is expected by Thursday afternoon. Winds are forecast to be out of the north on Wednesday, and then northwest on Thursday into Friday.
MARINE
A large area of high pressure will descend into the north- central U.S. Since the high won't be directly overhead, winds will only gradually diminish through Tuesday. Gale Warnings continue through this afternoon. Small Craft Advisories may be needed for portions of the waters through Tuesday night.
Low pressure passing to the south may bring snow, especially in the vicinity of southern Maryland late Wednesday into Thursday.
Northerly winds are expected on Wednesday. Winds will shift to northwesterly late Wednesday night into Thursday. SCA gusts appear likely during that time. Winds diminish Friday.
LWX WATCHES/WARNINGS/ADVISORIES
DC...Wind Advisory until noon EST today for DCZ001.
MD...Gale Warning until 4 PM EST this afternoon for MDZ008.
Wind Advisory until noon EST today for MDZ003>006-008-011-013- 014-501>508.
Blizzard Warning until 3 PM EST this afternoon for MDZ001.
Cold Weather Advisory from 10 PM this evening to 10 AM EST Tuesday for MDZ001.
Winter Weather Advisory until 3 PM EST this afternoon for MDZ501.
VA...Wind Advisory until noon EST today for VAZ025>031-040-053-054- 501-503>508-526.
Winter Weather Advisory until 3 PM EST this afternoon for VAZ503.
WV...Wind Advisory until noon EST today for WVZ050>053-055-502>504- 506.
Blizzard Warning until 3 PM EST this afternoon for WVZ501-505.
Cold Weather Advisory from 10 PM this evening to 10 AM EST Tuesday for WVZ501-505.
Winter Weather Advisory until 3 PM EST this afternoon for WVZ503.
MARINE...Gale Warning until 4 PM EST this afternoon for ANZ530>543.
Wind Advisory until noon EST today for ANZ530.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
TPLM2 - Thomas Point, MD | 3 mi | 81 min | W 28G | 37°F | 30.02 | |||
44063 - Annapolis | 7 mi | 45 min | W 14G | 38°F | 38°F | 1 ft | ||
APAM2 - 8575512 - Annapolis, MD | 8 mi | 51 min | W 15G | 39°F | 42°F | 30.00 | ||
CPVM2 | 10 mi | 51 min | 38°F | 12°F | ||||
BSLM2 - Chesapeake Bay, MD | 14 mi | 51 min | WNW 9.9 | 41°F | 30.01 | 12°F | ||
44062 - Gooses Reef, MD | 22 mi | 45 min | W 19G | 38°F | 38°F | 2 ft | ||
FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 24 mi | 51 min | WNW 22G | 37°F | 29.99 | |||
TCBM2 - 8573364 - Tolchester Beach, MD | 27 mi | 51 min | WNW 22G | 37°F | 30.00 | |||
BLTM2 - 8574680 - Baltimore, MD | 28 mi | 51 min | W 8G | 38°F | 38°F | |||
CA2 - 8571892 - Cambridge, MD | 29 mi | 51 min | NW 15G | 39°F | 40°F | 30.02 | ||
WASD2 - 8594900 - Washington, DC | 29 mi | 51 min | W 13G | 39°F | 40°F | 30.04 | ||
COVM2 - 8577018 - Cove Point LNG Pier, MD | 33 mi | 51 min | WNW 8G | 41°F | 30.02 | |||
SLIM2 - 8577330 - Solomons Island, MD | 38 mi | 51 min | W 12G | 42°F | 39°F | 30.02 | ||
NCDV2 | 48 mi | 51 min | W 8G | 43°F | 42°F | 30.01 |
Wind History for Annapolis, MD
toggle option: (graph/table)
Airport Reports
Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
KADW JOINT BASE ANDREWS,MD | 22 sm | 25 min | W 20G27 | 10 sm | Clear | 41°F | 9°F | 26% | 29.98 | |
KESN EASTON/NEWNAM FIELD,MD | 22 sm | 35 min | WNW 19G25 | 10 sm | Clear | 41°F | 12°F | 30% | 30.00 | |
KFME TIPTON,MD | 22 sm | 11 min | W 20G28 | 10 sm | Clear | 37°F | 12°F | 35% | 30.04 | |
KBWI BALTIMORE/WASHINGTON INTL THURGOOD MARSHALL,MD | 24 sm | 26 min | W 18G27 | 10 sm | A Few Clouds | 39°F | 12°F | 33% | 30.00 |
Link to 1 hour of 5 minute data for KNAK
Terminal Aerodrome Forecast (TAF) for KNAK
Wind History Graph: NAK
(wind in knots)GEOS Local Image of east us
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