202
FNUS71 KLWX 251021
FWSLWX
SPOT FORECAST FOR HELO HEAT...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
621 AM EDT WED JUN 25 2025
FORECAST IS BASED ON FORECAST START TIME OF 1300 EDT ON JUNE 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
AS A STRONG RIDGE OF HIGH PRESSURE IN THE UPPER ATMOSPHERE
REMAINS OVER THE AREA, IT WILL BE ANOTHER DAY OF ABOVE NORMAL
TEMPERATURES. WHILE NOT AS HOT AS LOCATIONS WITHIN THE LOWER
ELEVATIONS, EXPECT HIGHS TO REACH THE MID TO UPPER 80S WITH HEAT
INDICES NEAR 90 DEGREES. THERE WILL BE SOME RISK OF ISOLATED
THUNDERSTORMS THAT FIRE UP BY THE EARLY TO MID AFTERNOON. A COUPLE
OF THE STRONGER STORMS MAY POSE A RISK OF DAMAGING WIND GUSTS.
HEADING INTO TONIGHT, ANY STORM CHANCES DIMINISH WITH THE LOSS OF
DAYTIME HEATING. NIGHTTIME TEMPERATURES FALL TO AROUND 70
DEGREES.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). ISOLATED SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...25 PERCENT.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........50 PERCENT.
HEAT INDEX..........NEAR 90.
SURFACE WINDS (MPH).LIGHT WINDS.
TIME (EDT) 1 PM 3 PM 5 PM
SKY (%).........32 46 56
WEATHER COV..... ISOLTD ISOLTD
WEATHER TYPE....NONE RNSHWR RNSHWR
TSTM COV........ ISOLTD ISOLTD
CHC OF PCPN (%).10 20 20
CHC OF THDR (%).10 20 20
TEMP............86 85 82
RH..............53 53 61
HEAT INDEX (F)..89 87 85
SURFACE WIND....NW 3 NW 3 NW 3
SURFACE WND GST.8 9 9
FORECASTER...RUBIN-OSTER
REQUESTED BY...LOGAN TUCKER
TYPE OF REQUEST...SAR
.TAG 2516620.0/LWX
.DELDT 06/25/25
.FORMATTERVERSION 2.0.0
.EMAIL LOGAN_TUCKER@NPS.GOV
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