174
FXUS65 KVEF 182025
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
124 PM PDT FRI JUL 18 2025
KEY MESSAGES
* MONSOONAL MOISTURE BRINGS SCATTERED STORMS TO THE AREA TODAY,
BECOMING MORE ISOLATED ON SATURDAY. SOME OF THIS ACTIVITY MAY
BRING FLASH FLOODING AND GUSTY OUTFLOW WINDS.
* TEMPERATURES REBOUND TO NEAR SEASONAL VALUES OVER THE WEEKEND AND
NEXT WEEK AS DRY AND BREEZY CONDITIONS RETURN TO MOST OF THE AREA.
DISCUSSION
THROUGH THURSDAY.
LATEST SATELLITE IMAGERY SHOWS A LARGE MCV SPINNING ALONG THE BORDER
OF INYO AND SAN BERNARDINO COUNTIES. THIS FEATURE AND THE EVER-
PRESENT OROGRAPHIC CIRCULATIONS WILL HELP INITIATE SCATTERED
CONVECTION AROUND THE AREA TODAY. STORMS ARE ALREADY GOING ON THE
HIGH TERRAIN OF CLARK AND SAN BERNARDINO COUNTIES. AS THE AFTERNOON
ROLLS AROUND, EXPECTING COVERAGE TO INCREASE ALONG AND SOUTH OF THE
INTERSTATE 15 CORRIDOR, AS WELL AS LINCOLN COUNTY. FLASH FLOODING
WILL BE THE MAIN HAZARD, THOUGH GUSTY OUTFLOW WINDS WILL ALSO BE
POSSIBLE. UNLIKE YESTERDAY, TODAY'S ACTIVITY SHOULD LARGELY WANE BY
SUNSET. TOMORROW, DRIER AIR BEGINS TO WORK ITS WAY IN, RESULTING IN
MORE ISOLATED ACTIVITY, FOCUSED MAINLY ACROSS THE SOUTHERN GREAT
BASIN. BY SUNDAY, PRECIPITATION CHANCES DROP BELOW 20% ACROSS THE
ENTIRE CWA EXCEPT EASTERN MOHAVE COUNTY WHERE THEY LINGER BETWEEN 20
AND 40% THROUGH TUESDAY.
WITH MOISTURE AND CLOUD COVER DECREASING OVER THE WEEKEND,
TEMPERATURES ARE FORECAST TO REBOUND TO NEAR SEASONAL VALUES.
HEATRISK REMAINS IN THE MINOR TO MODERATE CATEGORIES, SUGGESTING
IMPACTS WILL LARGELY BE CONFINED TO THOSE SENSITIVE TO HEAT. AS A
TROUGH DIGS OFF THE WEST COAST, WE'LL EXPERIENCE BREEZY SOUTHWEST
WINDS. BREEZES MAY BE STRONG ENOUGH TO PRODUCE ELEVATED FIRE WEATHER
CONDITIONS IN PLACES THAT DON'T RECEIVE MUCH PRECIPITATION TODAY.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
OUTSIDE
OF ANY CONVECTIVE INFLUENCES, EXPECTING WINDS TO REMAIN LIGHT FROM
THE SOUTH, FAVORING A SOUTHEAST COMPONENT DURING THE MORNING HOURS.
HOWEVER, VICINITY THUNDERSTORMS ARE FORECAST TO DEVELOP AGAIN THIS
AFTERNOON, WITH GUSTY, ERRATIC OUTFLOW WINDS POSSIBLE IN THE VALLEY.
GUSTS OF 20-40 KNOTS POSSIBLE (50%) WITH THIS ACTIVITY. CHANCE OF TS
AT THE AIRPORT AROUND 25%. SCATTERED TO BROKEN CLOUDS BETWEEN 10-
12KFT WITH SKIES CLEARING LATE TONIGHT. TEMPERATURES EXPECTED TO
REMAIN BELOW 100F TODAY.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 18Z FORECAST PACKAGE...ISOLATED TO SCATTERED
CONVECTION ACROSS THE REGION THIS AFTERNOON, PRIMARILY ALONG THE I-
15 CORRIDOR AND SOUTHERN GREAT BASIN. GUSTY, ERRATIC OUTFLOW WINDS
OF 20-40 KNOTS POSSIBLE NEAR THUNDERSTORMS. CONVECTIVE ACTIVITY WILL
LARGELY WANE BY SUNSET, BUT SOME MAY LINGER ACROSS THE SOUTHERN
GREAT BASIN UNTIL ~06Z. BARRING ANY CONVECTIVE INFLUENCES, WINDS
SHOULD FOLLOW TYPICAL, DAILY PATTERNS. SCATTERED TO BROKEN CLOUDS
BETWEEN 10-12KFT WITH SKIES CLEARING LATE TONIGHT.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...WOODS
AVIATION...WOODS
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