000
WTPZ34 KNHC 210846
TCPEP4
BULLETIN
POST TROPICAL CYCLONE HILARY ADVISORY NUMBER 20
NATIONAL WEATHER SERVICE NATIONAL HURRICANE CENTER MIAMI FLORIDA, EP092023
2:00 A.M. PACIFIC DAYLIGHT TIME MONDAY AUG 21 2023
CONTINUED LIFE THREATENING AND LOCALLY CATASTROPHIC FLOODING EXPECTED OVER PORTIONS OF THE SOUTHWESTERN U.S. TODAY…
NEXT ADVISORY TO BE ISSUED BY THE WEATHER PREDICTION CENTER…
SUMMARY OF 2:00 A.M. PACIFIC DAYLIGHT TIME, 09:00 COORDINATED UNIVERSAL TIME
INFORMATION
LOCATION, 38.3 NORTH , 117.9 WEST
ABOUT 390 MILES, 625 KILOMETERS NORTH OF SAN DIEGO CALIFORNIA
MAXIMUM SUSTAINED WINDS,35 MILES PER HOUR ,55 KILOMETERS PER HOUR
PRESENT MOVEMENT,N OR 355 DEGREES AT 29 MILES PER HOUR ,46 KILOMETERS PER HOUR
MINIMUM CENTRAL PRESSURE,1004 MILLIBAR ,29.65 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
ALL COASTAL WARNINGS HAVE BEEN DISCONTINUED.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
- FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED STATES, INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS, PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE.
- FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE OF THE UNITED STATES, PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.
DISCUSSION AND OUTLOOK
- AT 2:00 A.M. PACIFIC DAYLIGHT TIME (09:00 COORDINATED UNIVERSAL TIME), THE CENTER OF POST TROPICAL CYCLONE HILARY WAS LOCATED NEAR LATITUDE 38.3 NORTH, LONGITUDE 117.9 WEST
- THE POST TROPICAL CYCLONE IS MOVING TOWARD THE NORTH NEAR 29 MILES PER HOUR (46 KILOMETERS PER HOUR), AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE TODAY.
ON THE FORECAST TRACK, THE CENTER OF POST TROPICAL HILARY WILL MOVE QUICKLY ACROSS NEVADA TODAY. - MAXIMUM SUSTAINED WINDS ARE NEAR 35 MILES PER HOUR (55 KILOMETERS PER HOUR) WITH HIGHER GUSTS.
- POST TROPICAL HILARY IS FORECAST TO DISSIPATE LATER TODAY.
- THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1004 MILLIBAR (29.65 INCHES).
HAZARDS AFFECTING LAND
KEY MESSAGES FOR HILARY CAN BE FOUND IN THE TROPICAL CYCLONE DISCUSSION UNDER AWIPS HEADER MILESATCDEP4 AND WMO HEADER WTPZ44 KNHC
AND ON THE WEB AT HURRICANES.GOV/TEXT/MIATCDEP4.SHTML.
RAINFALL:
- POST TROPICAL HILARY IS EXPECTED TO PRODUCE ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES, WITH ISOLATED STORM TOTAL AMOUNTS TO 12 INCHES, ACROSS PORTIONS OF SOUTHERN CALIFORNIA AND SOUTHERN NEVADA THROUGH TODAY.
- CONTINUED FLASH AND URBAN FLOODING, LOCALLY CATASTROPHIC, IS EXPECTED.
ACROSS PORTIONS OF OREGON AND IDAHO, RAINFALL TOTALS OF 1 TO 3 INCHES WITH LOCAL MAXIMA TO 5 INCHES ARE EXPECTED THROUGH TUESDAY MORNING, RESULTING IN LOCALIZED, SOME SIGNIFICANT, FLASH FLOODING. - A LIST OF RAINFALL OBSERVATIONS COMPILED BY THE NOAA WEATHER PREDICTION CENTER FOR THIS STORM CAN BE FOUND AT: WWW.WPC.NCEP.NOAA.GOV/DISCUSSIONS/NFDSCC4.HTML
WIND:
- POST TROPICAL HILARY IS STILL EXPECTED TO PRODUCE STRONG AND GUSTY WINDS IN AND NEAR AREAS OF ELEVATED TERRAIN TODAY.
SURF:
- LARGE SWELLS WILL CONTINUE TO AFFECT PORTIONS OF THE BAJA CALIFORNIA PENINSULA AND SOUTHERN CALIFORNIA THROUGH THIS MORNING.
- THESE SWELLS ARE LIKELY TO CAUSE LIFE THREATENING SURF AND RIP CURRENT CONDITIONS.
PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE.
NEXT ADVISORY
- THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON POST TROPICAL HILARY.
- FUTURE INFORMATION ON THIS SYSTEM CAN BE FOUND IN PUBLIC ADVISORIES ISSUED BY THE WEATHER PREDICTION CENTER BEGINNING AT 8:00 A.M. PACIFIC DAYLIGHT TIME, UNDER AWIPS HEADER TCPEP4, WMO HEADER WTPZ34 KWNH, AND ON THE WEB AT HTTP://WWW.HURRICANES.GOV.
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FORECASTER REINHART