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Tropical Storm Linda Forecast Advisory Number 9
2021-08-12 10:39:55| Tropical Depression LIDIA
Issued at 0900 UTC THU AUG 12 2021
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Tropical Depression Kevin Forecast Discussion Number 20
2021-08-12 10:38:15| National Hurricane Center (East Pacific)
Issued at 200 AM PDT Thu Aug 12 2021 000 WTPZ41 KNHC 120838 TCDEP1 Tropical Depression Kevin Discussion Number 20 NWS National Hurricane Center Miami FL EP112021 200 AM PDT Thu Aug 12 2021 Kevin is barely a tropical cyclone, as its exposed low-level center has been displaced over 100 n mi northeast of a few small bursts of convection for most of the night. In fact, the last semblance of organized convection with this sheared cyclone ended around 11/2100 UTC. If Kevin is unable to generate any organized convection soon, the system could be declared a post-tropical remnant low later this morning. Overnight ASCAT-A/B passes only showed 25 to 30-kt winds, primarily in the eastern semicircle of Kevin. Therefore, the initial intensity is lowered to 30 kt for this advisory, which makes Kevin a tropical depression. Based on recent scatterometer fixes, it appears the broad center of Kevin is moving slightly more west-northwestward than before, or 295/10 kt. A general west-northwest to northwest motion should continue through dissipation as the system moves along the southwestern side of a deep-layer ridge. The track guidance remains in good agreement, and the official NHC track forecast has been nudged slightly southward from the previous one based on the initial motion adjustment. The cyclone is already north of the 26 deg C isotherm, and it will move over progressively cooler waters and into a drier, more stable environment during the next couple of days. Thus, the development of new, organized convection near Kevin's center seems very unlikely. The official NHC forecast now shows Kevin degenerating to a remnant low later today, in agreement with the latest GFS and ECMWF model simulated satellite imagery. The remnant low should gradually spin down over the next couple of days before dissipating this weekend. FORECAST POSITIONS AND MAX WINDS INIT 12/0900Z 22.3N 119.3W 30 KT 35 MPH 12H 12/1800Z 23.2N 121.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 24H 13/0600Z 24.4N 123.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 13/1800Z 25.8N 125.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 14/0600Z 27.4N 127.6W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 14/1800Z 29.0N 129.0W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 15/0600Z...DISSIPATED $$ Forecaster Reinhart/Cangialosi
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Tropical Depression Kevin Public Advisory Number 20
2021-08-12 10:37:16| National Hurricane Center (East Pacific)
Issued at 200 AM PDT Thu Aug 12 2021 000 WTPZ31 KNHC 120837 TCPEP1 BULLETIN Tropical Depression Kevin Advisory Number 20 NWS National Hurricane Center Miami FL EP112021 200 AM PDT Thu Aug 12 2021 ...KEVIN WEAKENS TO A TROPICAL DEPRESSION... ...EXPECTED TO BECOME A REMNANT LOW LATER TODAY... SUMMARY OF 200 AM PDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...22.3N 119.3W ABOUT 600 MI...965 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 AM PDT (0900 UTC), the center of Tropical Depression Kevin was located near latitude 22.3 North, longitude 119.3 West. The depression is moving toward the west-northwest near 12 mph (19 km/h), and this general motion is expected to continue for the next few days. Satellite-derived wind data indicate that maximum sustained winds have decreased to near 35 mph (55 km/h) with higher gusts. Additional weakening is expected during the next couple of days, and Kevin is forecast to become a remnant low later today and dissipate this weekend. The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Kevin will affect portions of the coast of Baja California Sur today. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 800 AM PDT. $$ Forecaster Reinhart/Cangialosi
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Tropical Depression Kevin Wind Speed Probabilities Number 20
2021-08-12 10:37:16| National Hurricane Center (East Pacific)
Issued at 0900 UTC THU AUG 12 2021 000 FOPZ11 KNHC 120837 PWSEP1 TROPICAL DEPRESSION KEVIN WIND SPEED PROBABILITIES NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL EP112021 0900 UTC THU AUG 12 2021 AT 0900Z THE CENTER OF TROPICAL DEPRESSION KEVIN WAS LOCATED NEAR LATITUDE 22.3 NORTH...LONGITUDE 119.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 06Z THU AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 06Z THU 18Z THU 06Z FRI 18Z FRI 06Z SAT 06Z SUN 06Z MON PERIODS TO TO TO TO TO TO TO 18Z THU 06Z FRI 18Z FRI 06Z SAT 06Z SUN 06Z MON 06Z TUE FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 25N 125W 34 X 2( 2) 9(11) X(11) X(11) X(11) X(11) $$ FORECASTER REINHART/CANGIALOSI
Tropical Depression Kevin Forecast Advisory Number 20
2021-08-12 10:36:43| National Hurricane Center (East Pacific)
Issued at 0900 UTC THU AUG 12 2021 000 WTPZ21 KNHC 120836 TCMEP1 TROPICAL DEPRESSION KEVIN FORECAST/ADVISORY NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL EP112021 0900 UTC THU AUG 12 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 22.3N 119.3W AT 12/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 12 FT SEAS..180NE 150SE 90SW 90NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 22.3N 119.3W AT 12/0900Z AT 12/0600Z CENTER WAS LOCATED NEAR 22.0N 118.7W FORECAST VALID 12/1800Z 23.2N 121.0W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 13/0600Z 24.4N 123.5W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 13/1800Z 25.8N 125.7W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 14/0600Z 27.4N 127.6W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 14/1800Z 29.0N 129.0W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 15/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.3N 119.3W NEXT ADVISORY AT 12/1500Z $$ FORECASTER REINHART/CANGIALOSI
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