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Tropical Storm Josephine Graphics
2020-08-15 22:36:33| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Sat, 15 Aug 2020 20:36:33 GMT Wind Speed Probabilities last updated Sat, 15 Aug 2020 20:36:33 GMT
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Summary for Tropical Storm Josephine (AT1/AL112020)
2020-08-15 22:34:51| National Hurricane Center (Atlantic)
...CENTER OF JOSEPHINE CONTINUING TO PASS NORTHEAST OF THE NORTHERN LEEWARD ISLANDS... As of 5:00 PM AST Sat Aug 15 the center of Josephine was located near 20.0, -61.6 with movement WNW at 17 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 45 mph.
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Tropical Storm Josephine Public Advisory Number 17
2020-08-15 22:34:51| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sat Aug 15 2020 891 WTNT31 KNHC 152034 TCPAT1 BULLETIN Tropical Storm Josephine Advisory Number 17 NWS National Hurricane Center Miami FL AL112020 500 PM AST Sat Aug 15 2020 ...CENTER OF JOSEPHINE CONTINUING TO PASS NORTHEAST OF THE NORTHERN LEEWARD ISLANDS... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...20.0N 61.6W ABOUT 160 MI...255 KM NE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Leeward Islands should monitor the progress of this system. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Tropical Storm Josephine was located near latitude 20.0 North, longitude 61.6 West. Josephine is moving toward the west-northwest near 17 mph (28 km/h), and this general motion is expected to continue for the next day or two, followed by a turn toward the northwest and north early next week. On the forecast track, the center of Josephine is expected to pass to the northeast and north of the Leeward Islands today through tonight. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Josephine is now in an area of unfavorable upper-level winds, and weakening is expected during the next couple of days. Tropical-storm-force winds extend outward up to 80 miles (130 km) to the north of the center. The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Josephine is expected to cause storm-total rainfall of 1 to 3 inches over portions of the northern Leeward Islands, the Virgin Islands, and Puerto Rico. Isolated minor flooding is possible in Puerto Rico through Monday. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Beven
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Tropical Storm Josephine Forecast Advisory Number 17
2020-08-15 22:34:51| National Hurricane Center (Atlantic)
Issued at 2100 UTC SAT AUG 15 2020 890 WTNT21 KNHC 152034 TCMAT1 TROPICAL STORM JOSEPHINE FORECAST/ADVISORY NUMBER 17 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112020 2100 UTC SAT AUG 15 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. INTERESTS IN THE LEEWARD ISLANDS SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. TROPICAL STORM CENTER LOCATED NEAR 20.0N 61.6W AT 15/2100Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 15 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. 34 KT....... 70NE 0SE 0SW 60NW. 12 FT SEAS.. 90NE 0SE 0SW 70NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 20.0N 61.6W AT 15/2100Z AT 15/1800Z CENTER WAS LOCATED NEAR 19.7N 61.0W FORECAST VALID 16/0600Z 20.8N 63.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 70NE 0SE 0SW 60NW. FORECAST VALID 16/1800Z 22.1N 65.5W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 70NE 0SE 0SW 60NW. FORECAST VALID 17/0600Z 23.4N 67.4W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 17/1800Z 24.9N 68.6W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 18/0600Z 26.3N 69.3W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 18/1800Z 28.0N 69.4W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 19/1800Z 30.5N 68.0W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 20/1800Z 33.0N 65.0W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.0N 61.6W NEXT ADVISORY AT 16/0300Z $$ FORECASTER BEVEN
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Tropical Storm Josephine Forecast Discussion Number 17
2020-08-15 22:34:51| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sat Aug 15 2020 889 WTNT41 KNHC 152034 TCDAT1 Tropical Storm Josephine Discussion Number 17 NWS National Hurricane Center Miami FL AL112020 500 PM AST Sat Aug 15 2020 Josephine continues to feel the effects of westerly shear, and the low cloud swirl denoting the center is partly exposed at the western edge of the convection. Satellite intensity estimates have not changed significantly since the earlier recon flight, so the initial intensity remains 40 kt. Animation of satellite imagery suggests that the low-level circulation is at best barely closed, but there is insufficient evidence right now to justify a downgrade to a tropical wave. Another aircraft is scheduled to investigate the system near 0000Z. The initial motion is west-northwestward or 295/15 kt. It sounds like a broken record, but there is little change to either the forecast guidance or the forecast track since the last advisory. For the next 36-48 h, Josephine or its remnants are likely to continue to move west-northwestward on the southwest side of the subtropical ridge. After that, the system is forecast to recurve to the north and north-northeast through a break in the western portion of the ridge. As before, the new NHC forecast lies near the the center of the tightly-clustered guidance and near the various consensus models. Josephine is expected to remain in an environment of moderate to strong westerly shear for at least the next 48-60 h which should cause the system to weaken. The intensity forecast, which assumes some sort of closed circulation will last for 5 days, now calls for the system to weaken to a depression between 24-36 h and become a remnant low by 60 h. An alternative scenario is that the system degenerates to a tropical wave, which could occur at almost any time given the state of the circulation. There is a chance that Josephine or its remnants could encounter a less hostile environment after 72 h. However, it remains unclear at this time whether there will be enough left of the system to take advantage of those favorable conditions. KEY MESSAGES: 1. Josephine is passing far enough to the northeast of the Leeward Islands to prevent major impacts. However, interests there should continue to monitor its progress until the storm has passed north of that area. 2. Locally heavy rainfall is possible in the northern Leeward Islands, the Virgin Islands, and Puerto Rico as Josephine passes by to the northeast. Isolated minor flooding is possible in Puerto Rico through Monday. FORECAST POSITIONS AND MAX WINDS INIT 15/2100Z 20.0N 61.6W 40 KT 45 MPH 12H 16/0600Z 20.8N 63.4W 35 KT 40 MPH 24H 16/1800Z 22.1N 65.5W 35 KT 40 MPH 36H 17/0600Z 23.4N 67.4W 30 KT 35 MPH 48H 17/1800Z 24.9N 68.6W 30 KT 35 MPH 60H 18/0600Z 26.3N 69.3W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 18/1800Z 28.0N 69.4W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 19/1800Z 30.5N 68.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 20/1800Z 33.0N 65.0W 20 KT 25 MPH...POST-TROP/REMNT LOW $$ Forecaster Beven
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