211
FNUS71 KLWX 271958
FWSLWX
SPOT FORECAST FOR REHEARSAL...NPS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
358 PM EDT MON APR 27 2026
FORECAST IS BASED ON FORECAST START TIME OF 1000 EDT ON APRIL 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
HIGH PRESSURE WILL BUILD TO THE NORTH THROUGH TONIGHT WITH
CONTINUED ONSHORE FLOW. NEAR TO SLIGHTLY BELOW AVERAGE
TEMPERATURES ARE EXPECTED MUCH OF THIS WEEK, WHICH COMES WITH
INCREASING SHOWER AND THUNDERSTORM CHANCES BY TUESDAY AND
WEDNESDAY. A FEW SHOWERS COULD LINGER THROUGH LATE IN THE WEEK AS
A SERIES OF UPPER LEVEL DISTURBANCES PASS BY. HIGH PRESSURE
APPROACHES FROM THE MISSISSIPPI VALLEY BY THE WEEKEND.
WEDNESDAY
SKY/WEATHER.........CLOUDY (90-100 PERCENT). RAIN SHOWERS LIKELY IN
THE LATE MORNING AND EARLY AFTERNOON. SLIGHT
CHANCE OF THUNDERSTORMS LATE IN THE MORNING,
THEN RAIN SHOWERS AND CHANCE OF THUNDERSTORMS
LATE IN THE AFTERNOON.
CHANCE OF PCPN......100 PERCENT.
CHANCE OF THUNDER...36 PERCENT.
MAX TEMPERATURE.....AROUND 62.
MIN HUMIDITY........78 PERCENT.
SURFACE WINDS (MPH).SOUTHEAST WINDS 7 TO 9 MPH.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........87 88 92 96 100 100 100 100
WEATHER COV.....LKY LKY LKY LKY DEF DEF DEF DEF
WEATHER TYPE....RW RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH CHC CHC CHC CHC
CHC OF PCPN (%).70 70 70 70 100 100 100 100
CHC OF THDR (%).10 20 20 20 30 30 30 40
TEMP............56 57 58 59 60 60 61 61
RH..............80 80 80 78 78 81 78 81
SURFACE WND DIR.SE SE SE SE SE SE S S
SURFACE WND SPD.7 7 8 8 8 8 9 9
SURFACE WND GST.13 14 15 16 17 17 17 16
WEDNESDAY NIGHT
SKY/WEATHER.........CLOUDY (85-95 PERCENT) THEN BECOMING PARTLY
CLOUDY (30-40 PERCENT). RAIN SHOWERS AND CHANCE
OF THUNDERSTORMS EARLY IN THE EVENING, THEN
SLIGHT CHANCE OF RAIN SHOWERS OVERNIGHT.
CHANCE OF PCPN......100 PERCENT.
CHANCE OF THUNDER...36 PERCENT.
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........84 PERCENT.
SURFACE WINDS (MPH).SOUTH WINDS 8 TO 16 MPH SHIFTING TO THE
NORTHWEST 10 TO 20 MPH IN THE LATE EVENING AND
OVERNIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........100 100 75 75 75 75 75 75 41 34 28 25
WEATHER COV.....DEF DEF LKY LKY LKY LKY LKY LKY SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........CHC CHC
CHC OF PCPN (%).100 100 60 60 60 60 60 60 20 20 20 20
CHC OF THDR (%).40 40 10 10 10 0 0 0 0 0 0 0
TEMP............61 61 60 60 59 58 57 55 53 51 49 47
RH..............81 81 84 81 80 77 75 77 77 77 77 76
SURFACE WND DIR.S S SW SW W NW NW NW NW NW NW NW
SURFACE WND SPD.10 10 12 13 14 14 15 16 17 17 18 18
SURFACE WND GST.16 17 17 17 18 18 20 21 21 22 23 24
FORECASTER...WITT
REQUESTED BY...JON BECK
TYPE OF REQUEST...OTHER
.TAG 2611854.0/LWX
.DELDT 04/27/26
.FORMATTERVERSION 2.0.0
.EMAIL JFBECK@NPS.GOV
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