Spot Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
303
FNUS71 KLWX 180958
FWSLWX
Spot Forecast for Key Bridge Response...USCG
National Weather Service Baltimore MD/Washington DC
558 AM EDT Sat May 18 2024
Forecast is based on forecast start time of 0600 EDT on May 18.
If conditions become unrepresentative...contact the National Weather
Service.
Please contact our office if you have questions
or concerns with this forecast.
.DISCUSSION...
The main focus ahead will be with an approaching area of light to
moderate rain showers. Expect this to arrive within the next
couple of hours and persist through the afternoon hours. Total
rainfall amounts should be around a quarter inch. Do not
anticipate any threat of lightning with these showers today.
Overall, ceilings remain low throughout the day, generally ranging
between MVFR and IFR which is around 800 to 1,500 feet. While rain
comes to an end tonight, low clouds linger given the persistent
onshore winds. Thus, IFR ceilings persist along with patchy fog
which may lead to reductions of visibility.
These low clouds likely linger into Sunday morning before some
improvements by the afternoon hours. The forecast is dry for
Sunday and into early portions of next week.
Winds across the Key Bridge Incident vary between northeasterly
to southeasterly through the weekend. Gusts should stay below
Small Craft Advisory levels though.
The current water temperature in the Patapsco River is 66 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
-------- --------- --------- --------- ------- --------
18/03 AM 3.0 1.3 1.5 0.5 None
18/03 PM 2.8 1.1 1.6 0.5 None
19/04 AM 2.9 1.2 1.3 0.5 None
19/04 PM 2.4 0.7 1.2 0.5 None
20/05 AM 3.0 1.3 1.3 0.5 None
20/04 PM 2.3 0.6 1.2 0.5 None
.TODAY...
Sky/weather.........Cloudy (90-100 percent). Rain showers likely
early in the morning, then rain showers likely
late in the morning.
Chance of pcpn......80 percent.
Max temperature.....Around 63.
Min humidity........87 percent.
Surface winds (kts).Southeast winds 5 to 7 knots, gusts up to 10 knots.
Wave height.........1 foot.
CEILING (KFT).......1.8 decreasing to 1.0 early in the morning,
then decreasing to 0.7 late in the morning, then
increasing to 0.9 late in the afternoon.
Visibility..........8 decreasing to 5 in the late morning and
afternoon.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........94 95 96 96 96 96 95 95 94 95 95 96
Weather cov.....LKY LKY DEF DEF DEF LKY LKY LKY LKY LKY LKY LKY
Weather type....RW RW RW RW RW RW RW RW RW RW RW RW
Tstm cov........
Chc of pcpn (%).70 70 80 80 80 70 70 70 60 60 60 60
Temp............61 61 60 60 59 59 59 59 59 59 60 60
RH..............90 87 96 96 100 100 100 100 100 100 100 100
SFC wnd dir.....SE SE SE SE SE SE SE E E E SE SE
SFC wnd spd kts.5 5 5 5 6 7 7 6 6 6 7 7
SFC wnd gst.....7 7 7 8 9 10 10 9 8 9 10 10
Wave height (ft)0 0 0 0 1 1 1 1 1 0 1 1
Ceiling (kft)...2.2 1.8 1.3 1.0 0.8 0.7 0.7 0.8 0.8 0.9 0.9 0.9
Visibility (sm).8 8 8 5 6 6 6 6 6 6 5 5
.TONIGHT...
Sky/weather.........Cloudy (85-95 percent). Rain showers likely
early in the evening, then slight chance of
rain showers early in the evening. Patchy fog
late in the evening.
Chance of pcpn......60 percent.
Min temperature.....Around 59.
Max humidity........100 percent.
Surface winds (kts).East winds 5 to 6 knots shifting to the
northeast around 5 knots after 3 am.
Wave height.........1 foot.
CEILING (KFT).......0.8 decreasing to 0.7 overnight, then
increasing to 0.8 after 3 am increasing to 1.0
early in the morning.
Visibility..........5 increasing to 6 overnight.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........94 91 89 91 93 94 93 92 91 90 89 88
Weather cov.....LKY LKY SCH SCH SCH SCH SCH SCH SCH SCH SCH
Weather type....RW RW RW RW RW RNF RNF RNF RNF RW RW
Tstm cov........
Chc of pcpn (%).60 60 20 20 20 20 20 20 20 20 20 10
Temp............63 63 63 63 62 62 62 60 60 59 60 59
RH..............90 87 90 87 90 90 87 93 93 96 93 96
SFC wnd dir.....SE SE SE SE E E E E E E NE NE
SFC wnd spd kts.6 5 5 5 5 6 5 5 5 5 5 5
SFC wnd gst.....9 8 7 7 8 8 8 8 7 7 7 7
Wave height (ft)1 0 0 0 0 0 0 0 0 0 0 0
Ceiling (kft)...0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.7 0.8 1.0
Visibility (sm).5 5 5 5 5 5 5 5 6 7 7 7
.SUNDAY...
Sky/weather.........Mostly cloudy (65-75 percent).
Chance of pcpn......10 percent.
Max temperature.....Around 72.
Min humidity........68 percent.
Surface winds (kts).Northeast winds 6 to 7 knots.
Wave height.........1 foot.
CEILING (KFT).......0.9 decreasing to 0.7 early in the morning,
then increasing to 1.4 late in the morning
increasing to 2.5 early in the afternoon
increasing to 3.0 increasing to 4.3 late
in the afternoon.
Visibility..........8 increasing to 10 in the afternoon.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........86 80 73 67 63 59
Weather cov.....
Weather type....NONE NONE NONE NONE NONE NONE
Tstm cov........
Chc of pcpn (%).10 0 0 10 10 10
Temp............59 61 63 66 68 70
RH..............96 90 87 81 76 71
SFC wind (kts)..NE 6 NE 6 NE 6 NE 7 E 7 E 7
SFC wnd gst ....7 8 8 9 10 10
Wave height (ft)0 0 0 0 1 1
Ceiling (kft)...0.9 0.7 1.4 2.2 2.8 3.0
Visibility (sm).8 8 9 10 10 10
$$
Forecaster...Rubin-Oster
Requested by...Jackie Gonzalez
Type of request...MARINE
.TAG 2413371.0/LWX
.DELDT 05/18/24
.FormatterVersion 2.0.0
.EMAIL nws-sterling-wxsupport@noaa.gov,jpg112122@gmail.com,Sitlkeybridgeresponse2024@gmail.com