609
FNUS71 KLWX 121444
FWSLWX

Spot Forecast for Key Bridge Response...USCG
National Weather Service Baltimore MD/Washington DC
1044 AM EDT Sun May 12 2024

Forecast is based on forecast start time of 1100 EDT on May 12.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...+

Clouds quickly build in late this morning, with ceilings around
1500 to 2500 feet, though they should increase through the
afternoon.

Over the past hour we have noticed winds increasing faster than
originally through over northern VA and northern MD. Expect west
winds to increase between 1100 to 1200 at the bridge site, with
sustained winds around 10 knots and gusts to 20 knots. As a
result, the Small Craft Advisory is now in effect for the Patapsco
River. These elevated winds will become west-northwest, then
northwest this afternoon, before subsiding this evening.

Light showers are starting to develop around the bridge site, and
this is expected to continue through the afternoon. Expect showers
to become numerous, with some brief moderate rainfall possible.
A thunderstorm or two is also possible this afternoon, and the
strongest storms could produce wind gusts around 25 knots.

Winds shift from northwest to more northeast early this evening,
then east late this evening. This could bring in another round of
lower clouds tonight.

Dry conditions expected Monday as winds turn south at around 10
knots.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of rain
                    showers late in the morning. Slight chance of
                    thunderstorms through the day. Rain showers
                    likely in the afternoon.
Chance of pcpn......60 percent.
Max temperature.....Around 64.
Min humidity........62 percent.
Surface winds (kts).Northwest winds around 5 knots shifting to the
                    north around 10 knots late in the afternoon.
Wave height.........1 foot.
CEILING (KFT).......1.2 increasing to 4.0 late in the afternoon.
Visibility..........10.

TIME (EDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........74  76  77  77  77  77  74
Weather cov.....CHC LKY LKY CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH SCH SCH
Chc of pcpn (%).50  60  60  50  40  40  30
Temp............59  59  60  61  61  62  63
RH..............67  69  67  65  67  65  62
SFC wnd dir.....W   NW  NW  NW  NW  N   N
SFC wnd spd kts.8   9   10  10  10  10  10
SFC wnd gst.....12  15  17  18  18  16  15
Wave height (ft)1   1   1   1   1   1   1
Ceiling (kft)...1.2 2.0 2.5 3.2 3.6 3.9 4.0
Visibility (sm).10  10  10  10  10  10  10

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent). Chance of rain
                    showers early in the evening, then slight
                    chance of rain showers early in the evening.
Chance of pcpn......30 percent.
Min temperature.....Around 53.
Max humidity........96 percent.
Surface winds (kts).North winds 7 to 9 knots shifting to the east 5
                    to 6 knots early in the evening, then shifting
                    to the southeast around 4 knots late in the
                    evening becoming light overnight becoming south
                    around 4 knots.
Wave height.........1 foot.
CEILING (KFT).......4.2 increasing to 9.3 early in the evening,
                    then decreasing 2.5 late.
Visibility..........9.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........69  63  58  55  54  54  55  57  61  67  73  77
Weather cov.....CHC SCH
Weather type....RW  RW
Tstm cov........
Chc of pcpn (%).30  20  0   0   0   0   0   0   0   0   0   0
Temp............62  62  62  59  57  56  55  55  55  54  54  54
RH..............65  65  67  78  83  86  86  90  86  90  90  90
SFC wnd dir.....N   NE  NE  E   E   E   SE  N   SE  SE  SE  S
SFC wnd spd kts.9   7   6   5   5   4   4   3   3   2   2   4
SFC wnd gst.....12  10  8   7   7   6   5   4   4   5   4   5
Wave height (ft)1   1   0   0   0   0   0   0   0   0   0   0
Ceiling (kft)...4.2 6.1 9.3 9.6 8.0 9.7 9.6 9.1 4.5 3.2 2.8 2.5
Visibility (sm).10  10  10  10  10  10  10  9   9   9   9   9

.MONDAY...

Sky/weather.........Partly sunny (45-55 percent) then becoming
                    sunny (15-25 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 72.
Min humidity........55 percent.
Surface winds (kts).South winds up to 11 knots.
Wave height.........1 foot.
CEILING (KFT).......1.2 early in the morning increasing 9.2 early in
                    the afternoon increasing to 24.
Visibility..........8 increasing to 10 early in the morning.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........78     67     40     28     30     20
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
Temp............53     55     59     64     68     71
RH..............96     90     80     67     61     55
SFC wind (kts)..S 4    S 4    S 6    S 7    S 9    S 10
SFC wnd gst ....5      5             9      12     14
Wave height (ft)0      0      0      0      1      1
Ceiling (kft)...1.2    1.9    1.5    9.2    21     25
Visibility (sm).9      10     10     10     10     10

$$
Forecaster...Rodriguez
Requested by...Jackie Gonzalez
Type of request...MARINE
.TAG 2413411.0/LWX
.DELDT 05/12/24
.FormatterVersion 2.0.0
.EMAIL Sitlkeybridgeresponse2024@gmail.com,jpg112122@gmail.com,nws-sterling-wxsupport@noaa.gov