Spot Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
722
FNUS71 KLWX 200959
FWSLWX
Spot Forecast for Key Bridge Response...USCG
National Weather Service Baltimore MD/Washington DC
559 AM EDT Mon May 20 2024
Forecast is based on forecast start time of 0600 EDT on May 20.
If conditions become unrepresentative...contact the National Weather
Service.
Please contact our office if you have questions
or concerns with this forecast.
.DISCUSSION...
A dry weather pattern is in store for the Key Bridge Incident area
through much of Wednesday. The main story the next couple of days
will be the low clouds and patchy dense fog. Current ceilings are
around 1,000 feet (right around MVFR to IFR) with occasional
reductions in visibility down to 3 to 5 statute miles. By a few
hours after sunrise, expect these to mix out and yield a mostly
sunny day with high temperatures into the mid/upper 70s. Given the
continued onshore winds, another round of low clouds and fog are
possible again tonight. This onshore flow also keeps tidal levels
elevated. While not explicitly forecasted to reach Minor flooding,
water levels do get fairly close during the high tides early
Tuesday and Wednesday mornings.
The pattern changes by late Wednesday into Thursday as a slow
moving cold front approaches the area from the west. This will
increase the risk of showers and thunderstorms, some possibly
severe on Thursday. However, there are a lot of unknowns this far
out. Monitor future forecast packages for updates on this threat.
The current water temperature on the Patapsco River is 67 degrees.
NW Branch Patapsco River at Baltimore MD
MLLW Categories - Minor 3.4 ft, Moderate 4.6 ft, Major 6.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.9 ft, Major 4.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/05 AM 3.0 1.3 1.3 0.5 None
20/04 PM 2.3 0.6 1.2 0.5 None
21/06 AM 3.2 1.5 1.4 0.5 None
21/05 PM 2.4 0.7 1.4 0.5 None
22/07 AM 3.3 1.6 1.4 0.5 None
22/06 PM 2.3 0.6 1.3 0.5 None
.TODAY...
Sky/weather.........Partly sunny (50-60 percent). Patchy fog early
in the morning.
Chance of pcpn......0 percent.
Max temperature.....Around 75.
Min humidity........60 percent.
Surface winds (kts).Light winds becoming southeast up to 6 knots in
the late morning and afternoon.
Wave height.........Less than 1 foot.
CEILING (KFT).......0.9 decreasing to 0.1 early in the morning,
then increasing to 1.3 late in the morning
increasing to 2.4 late in the morning
increasing to 6.1 early in the afternoon
increasing to 8.8 increasing to 12 late in
the afternoon increasing to 24.
Visibility..........6 increasing to 10 in the late morning and
afternoon.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........71 75 79 79 73 65 51 36 28 28 31 39
Weather cov..... PTY PTY
Weather type.... FOG FOG
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............61 60 61 64 66 68 69 70 72 73 75 74
RH..............87 90 90 81 75 73 70 71 66 64 60 62
SFC wnd dir.....SE SE SE SE SE SE SE SE SE SE SE SE
SFC wnd spd kts.3 3 3 3 4 4 4 5 5 5 6 6
SFC wnd gst.....6 5 4 4 5 5 6 6 7 7
Wave height (ft)0 0 0 0 0 0 0 0 0 0 0 0
Ceiling (kft)...0.9 0.1 0.1 1.3 2.4 3.7 6.1 8.8 12 13 13 24
Visibility (sm).7 6 6 8 10 10 10 10 10 10 10 10
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent). Patchy fog early
in the morning.
Chance of pcpn......0 percent.
Min temperature.....Around 61.
Max humidity........90 percent.
Surface winds (kts).South winds up to 5 knots becoming around 4
knots early in the morning.
Wave height.........Less than 1 foot.
CEILING (KFT).......24 decreasing to 7.1 early in the morning.
Visibility..........9 decreasing to 3 early in the morning.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........33 22 17 14 9 9 10 13 19 25 37 48
Weather cov..... PTY
Weather type.... FOG
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............74 73 72 70 69 67 66 65 64 63 63 62
RH..............62 64 68 73 76 81 84 84 87 87 87 90
SFC wnd dir.....SE SE S S S S SE S S S S S
SFC wnd spd kts.5 4 4 4 4 5 5 4 4 4 4 4
SFC wnd gst.....7 6 6 6 7 8 7 6 5 5 5 5
Wave height (ft)0 0 0 0 0 0 0 0 0 0 0 0
Ceiling (kft)...24 25 25 25 25 25 25 25 24 24 24 7.1
Visibility (sm).10 10 10 10 10 10 10 10 9 9 9 3
.TUESDAY...
Sky/weather.........Mostly sunny (30-40 percent). Patchy fog early
in the morning.
Chance of pcpn......0 percent.
Max temperature.....Around 79.
Min humidity........54 percent.
Surface winds (kts).Light winds becoming southeast up to 9 knots in
the late morning and afternoon.
Wave height.........1 foot.
CEILING (KFT).......7.1 decreasing to 3.7 early in the morning,
then increasing to 16 late in the morning
increasing to 24 late in the afternoon.
Visibility..........3 increasing to 10.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........58 62 39 27 20 13
Weather cov.....PATCHY PATCHY
Weather type....FOG FOG NONE NONE NONE NONE
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0
Temp............62 62 68 72 76 79
RH..............90 90 76 68 60 54
SFC wind (kts)..S 3 S 3 S 4 SE 6 SE 9 SE 9
SFC wnd gst ....5 5 5 7 10 11
Wave height (ft)0 0 0 0 1 1
Ceiling (kft)...7.1 3.7 3.7 16 24 24
Visibility (sm).3 3 7 10 10 10
$$
Forecaster...Rubin-Oster
Requested by...Jackie Gonzalez
Type of request...MARINE
.TAG 2413373.0/LWX
.DELDT 05/20/24
.FormatterVersion 2.0.0
.EMAIL jpg112122@gmail.com,nws-sterling-wxsupport@noaa.gov,Sitlkeybridgeresponse2024@gmail.com