253  
WTPZ31 KNHC 082034  
TCPEP1  
 
BULLETIN  
TROPICAL STORM PRISCILLA ADVISORY NUMBER 17  
NWS NATIONAL HURRICANE CENTER MIAMI FL EP162025  
200 PM MST WED OCT 08 2025  
 
...PRISCILLA BRINGING HIGH SURF AND GUSTY WINDS TO THE PACIFIC  
COAST OF BAJA CALIFORNIA SUR...  
...MOISTURE FROM PRISCILLA WILL INCREASE THE RISK OF FLOODING  
ACROSS THE U.S. DESERT SOUTHWEST LATE THIS WEEK THROUGH THE  
WEEKEND...  
 
 
SUMMARY OF 200 PM MST...2100 UTC...INFORMATION  
----------------------------------------------  
LOCATION...22.0N 113.0W  
ABOUT 205 MI...335 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA  
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H  
PRESENT MOVEMENT...NW OR 315 DEGREES AT 8 MPH...13 KM/H  
MINIMUM CENTRAL PRESSURE...985 MB...29.09 INCHES  
 
 
WATCHES AND WARNINGS  
--------------------  
CHANGES WITH THIS ADVISORY:  
 
NONE.  
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:  
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...  
* BAJA CALIFORNIA SUR FROM CABO SAN LUCAS TO CABO SAN LAZARO,  
MEXICO  
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE  
POSSIBLE WITHIN THE WATCH AREA, IN THIS CASE WITHIN 12 HOURS.  
 
INTERESTS ELSEWHERE IN THE BAJA CALIFORNIA PENINSULA SHOULD MONITOR  
THE PROGRESS OF PRISCILLA.  
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA, PLEASE MONITOR  
PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.  
 
 
DISCUSSION AND OUTLOOK  
----------------------  
AT 200 PM MST (2100 UTC), THE CENTER OF TROPICAL STORM PRISCILLA WAS  
LOCATED NEAR LATITUDE 22.0 NORTH, LONGITUDE 113.0 WEST. PRISCILLA IS  
MOVING TOWARD THE NORTHWEST NEAR 8 MPH (13 KM/H) AND THIS GENERAL  
MOTION IS EXPECTED TO CONTINUE THROUGH THURSDAY, FOLLOWED BY A TURN  
TOWARD THE NORTH THURSDAY NIGHT. ON THE FORECAST TRACK, THE CENTER  
OF PRISCILLA IS EXPECTED TO MOVE PARALLEL TO, BUT OFFSHORE OF, THE  
COAST OF BAJA CALIFORNIA SUR THROUGH THURSDAY.  
 
MAXIMUM SUSTAINED WINDS REMAIN NEAR 70 MPH (110 KM/H) WITH HIGHER  
GUSTS. WEAKENING IS FORECAST, AND PRISCILLA IS EXPECTED TO BECOME  
A REMNANT LOW BY FRIDAY.  
 
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 175 MILES (280 KM)  
FROM THE CENTER.  
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 985 MB (29.09 INCHES).  
 
 
HAZARDS AFFECTING LAND  
----------------------  
KEY MESSAGES FOR PRISCILLA CAN BE FOUND IN THE TROPICAL CYCLONE  
DISCUSSION UNDER AWIPS HEADER MIATCDEP1 AND WMO HEADER WTPZ41 KNHC.  
 
WIND: TROPICAL STORM CONDITIONS ARE POSSIBLE ALONG THE PACIFIC COAST  
OF BAJA CALIFORNIA SUR WITHIN THE WATCH AREA THROUGH THIS EVENING.  
 
RAINFALL: AS PRISCILLA MOVES OFF THE WEST COAST OF BAJA CALIFORNIA,  
UP TO AN INCH OF RAIN IS EXPECTED ACROSS THE BAJA CALIFORNIA  
PENINSULA. FARTHER NORTH ACROSS THE SOUTHWESTERN UNITED STATES,  
HEAVY RAIN FROM PRISCILLA’S MOISTURE IS EXPECTED TO LEAD TO 2 TO 4  
INCHES, WITH LOCAL STORM TOTAL AMOUNTS TO 6 INCHES, ACROSS PORTIONS  
OF CENTRAL AND NORTHERN ARIZONA, SOUTHERN UTAH, AND SOUTHWEST  
COLORADO FROM THURSDAY INTO SATURDAY AFTERNOON. SCATTERED  
OCCURRENCES OF FLASH FLOODING ARE ANTICIPATED FROM CENTRAL ARIZONA  
ACROSS SOUTHERN UTAH ACROSS THE FOUR CORNERS INTO SOUTHWEST COLORADO  
AND FAR NORTHWEST NEW MEXICO.  
 
FOR A COMPLETE DEPICTION OF FORECAST RAINFALL AND FLASH FLOODING  
ASSOCIATED WITH PRISCILLA, PLEASE SEE THE NATIONAL WEATHER SERVICE  
STORM TOTAL RAINFALL GRAPHIC, AVAILABLE AT  
HURRICANES.GOV/GRAPHICS_EP1.SHTML?RAINQPF  
 
SURF: LARGE SWELLS GENERATED BY PRISCILLA ARE AFFECTING THE PACIFIC  
COAST OF BAJA CALIFORNIA SUR AS WELL AS PORTIONS OF COASTAL  
SOUTHWESTERN AND WEST-CENTRAL MEXICO. THESE SWELLS ARE LIKELY TO  
CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS, IN ADDITION  
TO SOME COASTAL FLOODING. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL  
WEATHER OFFICE.  
 
 
NEXT ADVISORY  
-------------  
NEXT INTERMEDIATE ADVISORY AT 500 PM MST.  
NEXT COMPLETE ADVISORY AT 800 PM MST.  
 
 
FORECASTER HAGEN  
 
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