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Tropical Storm Marie Graphics
2020-10-06 10:57:44| National Hurricane Center (East Pacific)
5-Day Uncertainty Track last updated Tue, 06 Oct 2020 08:57:44 GMT Wind Speed Probabilities last updated Tue, 06 Oct 2020 08:57:44 GMT
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Tropical Storm Marie Forecast Discussion Number 29
2020-10-06 10:51:47| National Hurricane Center (East Pacific)
Issued at 1100 PM HST Mon Oct 05 2020 000 WTPZ43 KNHC 060851 TCDEP3 Tropical Storm Marie Discussion Number 29 NWS National Hurricane Center Miami FL EP182020 1100 PM HST Mon Oct 05 2020 A 6/0630Z ASCAT-B scatterometer overpass indicated that Marie has refused to weaken despite the deep convection being severely sheared to the northeast of the low-level center. A solid area of 40-kt was present northwest through northeast of the center, with a couple of 45-kt vectors present. However, the 45-kt vectors look like they could have been rain enhanced, so the initial intensity remains at 40 kt for this advisory. The initial motion estimate is 300/08 kt. There are no significant changes to the previous forecast track or reasoning. Marie is expected to move slowly west-northwestward along the southern periphery of a deep-layer ridge for the next 24 hours or so, during which time the cyclone will gradually spin down and become more vertically shallow. Thereafter, and continuing until dissipation occurs, a more westward motion is anticipated when the shallow system will be steered by the low-level easterly tradewind flow. The new NHC forecast track is similar to but a tad north of the previous advisory track, and lies near the middle of the tightly packed consensus aids. Although Marie has managed to survive some horrendous southwesterly vertical wind of at least 30 kt, the cyclone is not long for this world due to the shear increasing further while the cyclone moves over sub-25 deg C sea-surface temperatures for the next few days. These very unfavorable environmental conditions should result in all convection being stripped away by late Tuesday morning, causing Marie to degenerate into a 35-kt post-tropical cyclone. Further weakening is anticipated, with Marie becoming a remnant low by Tuesday night and dissipating by late Friday or Saturday over the far western portion of the eastern Pacific basin. FORECAST POSITIONS AND MAX WINDS INIT 06/0900Z 21.7N 134.3W 40 KT 45 MPH 12H 06/1800Z 22.2N 135.5W 35 KT 40 MPH...POST-TROPICAL 24H 07/0600Z 22.7N 136.8W 30 KT 35 MPH...POST-TROP/REMNT LOW 36H 07/1800Z 23.0N 137.7W 30 KT 35 MPH...POST-TROP/REMNT LOW 48H 08/0600Z 23.2N 138.6W 30 KT 35 MPH...POST-TROP/REMNT LOW 60H 08/1800Z 23.1N 139.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 09/0600Z 23.2N 140.8W 20 KT 25 MPH...POST-TROP/REMNT LOW 96H 10/0600Z...DISSIPATED $$ Forecaster Stewart
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Summary for Tropical Storm Marie (EP3/EP182020)
2020-10-06 10:51:16| National Hurricane Center (East Pacific)
...TENACIOUS MARIE REFUSES TO WEAKEN... ...STILL EXPECTED TO BECOME A REMNANT LOW ON TUESDAY... As of 11:00 PM HST Mon Oct 5 the center of Marie was located near 21.7, -134.3 with movement WNW at 9 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 45 mph.
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Tropical Storm Marie Public Advisory Number 29
2020-10-06 10:51:16| National Hurricane Center (East Pacific)
Issued at 1100 PM HST Mon Oct 05 2020 000 WTPZ33 KNHC 060851 TCPEP3 BULLETIN Tropical Storm Marie Advisory Number 29 NWS National Hurricane Center Miami FL EP182020 1100 PM HST Mon Oct 05 2020 ...TENACIOUS MARIE REFUSES TO WEAKEN... ...STILL EXPECTED TO BECOME A REMNANT LOW ON TUESDAY... SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION ----------------------------------------------- LOCATION...21.7N 134.3W ABOUT 1560 MI...2510 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM HST (0900 UTC), the center of Tropical Storm Marie was located near latitude 21.7 North, longitude 134.3 West. Marie is moving toward the west-northwest near 9 mph (15 km/h). This general motion with a decrease in forward speed is expected during the next couple of days, followed by a turn toward the west late Wednesday or early Thursday. Satellite-derived wind data indicate that maximum sustained winds remain near 45 mph (75 km/h) with higher gusts. Gradual weakening is forecast during the next 48 hours, and Marie is forecast to become a remnant low on Tuesday. Tropical-storm-force winds extend outward up to 105 miles (165 km), mainly north of the center. The estimated minimum central pressure is 1003 mb (29.62 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 AM HST. $$ Forecaster Stewart
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Tropical Storm Marie Forecast Advisory Number 29
2020-10-06 10:51:16| National Hurricane Center (East Pacific)
Issued at 0900 UTC TUE OCT 06 2020 000 WTPZ23 KNHC 060851 TCMEP3 TROPICAL STORM MARIE FORECAST/ADVISORY NUMBER 29 NWS NATIONAL HURRICANE CENTER MIAMI FL EP182020 0900 UTC TUE OCT 06 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 21.7N 134.3W AT 06/0900Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 8 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. 34 KT....... 90NE 0SE 0SW 90NW. 12 FT SEAS..180NE 90SE 120SW 180NW. 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 21.7N 134.3W AT 06/0900Z AT 06/0600Z CENTER WAS LOCATED NEAR 21.5N 133.9W FORECAST VALID 06/1800Z 22.2N 135.5W...POST-TROPICAL MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 70NE 0SE 0SW 70NW. FORECAST VALID 07/0600Z 22.7N 136.8W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 07/1800Z 23.0N 137.7W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 08/0600Z 23.2N 138.6W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 08/1800Z 23.1N 139.7W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 09/0600Z 23.2N 140.8W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 150 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 10/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.7N 134.3W NEXT ADVISORY AT 06/1500Z $$ FORECASTER STEWART
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