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Summary for Tropical Storm Karen (AT2/AL122019)
2019-09-25 01:42:15| National Hurricane Center (Atlantic)
...BROAD CIRCULATION CENTER OF KAREN MOVED OVER VIEQUES AND CULEBRA... ...HEAVY SQUALLS WILL CONTINUE OVER PUERTO RICO AND THE VIRGIN ISLANDS... As of 8:00 PM AST Tue Sep 24 the center of Karen was located near 18.5, -65.3 with movement NE at 10 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 45 mph.
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Tropical Storm Karen Public Advisory Number 11A
2019-09-25 01:42:15| National Hurricane Center (Atlantic)
Issued at 800 PM AST Tue Sep 24 2019 000 WTNT32 KNHC 242342 TCPAT2 BULLETIN Tropical Storm Karen Intermediate Advisory Number 11A NWS National Hurricane Center Miami FL AL122019 800 PM AST Tue Sep 24 2019 ...BROAD CIRCULATION CENTER OF KAREN MOVED OVER VIEQUES AND CULEBRA... ...HEAVY SQUALLS WILL CONTINUE OVER PUERTO RICO AND THE VIRGIN ISLANDS... SUMMARY OF 800 PM AST...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...18.5N 65.3W ABOUT 45 MI...75 KM E OF SAN JUAN PUERTO RICO ABOUT 10 MI...20 KM N OF CULEBRA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...NE OR 045 DEGREES AT 10 MPH...16 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * U.S. Virgin Islands * Puerto Rico, including Vieques and Culebra * British Virgin Islands A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. Interests elsewhere in the Lesser Antilles should monitor the progress of Karen. 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 ---------------------- Surface observations indicate that the broad circulation center of Karen moved near or over the islands of Vieques and Culebra during the past hour or so. At 800 PM AST (0000 UTC), the center of Tropical Storm Karen was estimated near latitude 18.5 North, longitude 65.3 West. Karen has been moving toward the northeast near 10 mph (16 km/h). However, Karen should move toward the north-northeast with some increase in forward speed tonight, with this motion continuing through Wednesday night. On the forecast track, the center of Karen will move away from Puerto Rico and the Virgin Islands during the next few hours, but the strong squalls which are to the south of the center will continue to affect that area through tonight. Karen should move over the western Atlantic later tonight and Wednesday. Data from an Air Force reconnaissance plane indicate that the maximum sustained winds remain near 45 mph (75 km/h) with higher gusts. These winds area confined mostly to the southeast of the center. Some strengthening is possible during the next couple of days. Tropical-storm-force winds extend outward up to 80 miles (130 km) mainly to the southeast of the center. St. Thomas has recently reported a wind gust of 43 mph (69 km/h) The estimated minimum central pressure from surface observations and data from a reconnaissance plane is 1003 mb (29.62 inches). HAZARDS AFFECTING LAND ---------------------- Rainfall: Karen is expected to produce the following rainfall accumulations through Wednesday: Puerto Rico and the Virgin Islands...3 to 6 inches, isolated 10 inches. Leeward Islands...1 to 3 inches, isolated 5 inches. These rains may cause flash flooding and mudslides, especially in mountainous areas. WIND: Tropical-storm-force winds, especially in gusts, are currently spreading across the warning area. Winds could be higher on the windward sides of hills and mountains, and also in elevated terrain. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Avila
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Tropical Storm Karen Graphics
2019-09-24 22:51:43| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Tue, 24 Sep 2019 20:51:43 GMT Wind Speed Probabilities last updated Tue, 24 Sep 2019 20:51:43 GMT
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Tropical Storm Karen Forecast Discussion Number 11
2019-09-24 22:49:14| National Hurricane Center (Atlantic)
Issued at 500 PM AST Tue Sep 24 2019 000 WTNT42 KNHC 242049 TCDAT2 Tropical Storm Karen Discussion Number 11 NWS National Hurricane Center Miami FL AL122019 500 PM AST Tue Sep 24 2019 The satellite appearance of Karen has improved over the past several hours, with a large convective band wrapped about halfway around the center in the western semicircle and an outer band in the southeastern semicircle. However, surface observations, Doppler radar data, and reports from an Air Force Reserve Hurricane Hunter aircraft indicate that the low-level circulation is elongated from south to north and that multiple vorticity centers are present. The lowest pressures and the strongest winds are at the southern end of the elongation near the eastern end of the convective band, and this is the center used for this advisory. The Hurricane Hunter aircraft reported 53 kt flight-level winds at 850 mb and data suggesting a central pressure near 1005 mb, so the initial intensity is increased to 40 kt. The initial motion is again 360/7, with some uncertainty due to the multiple vorticity centers and an apparent re-formation of the center closer to the convection between 15Z-18Z. Karen remains in a complex steering environment that includes a low- to mid-level ridge to the east and northeast, Tropical Storm Jerry to the north- northwest, and a large mid- to upper-level trough extending from near Jerry to eastern Cuba. These weather systems should steer Karen generally north-northeastward for the next couple of days. This motion should bring the center of Karen near or over Puerto Rico and the Virgin Islands during the next few hours and then into the open Atlantic tonight. During the 72-120 h period, the large-scale models forecast a low- to mid-level ridge to build near Karen, which will significantly slow its forward motion. The track guidance is in somewhat better agreement that this ridge will cause Karen to turn westward near the end of the forecast period, although there remains a lot of uncertainty about when and how fast. The new forecast track keeps Karen a little farther south before this turn occurs, and thus the 120-h position is a little to the south of the previous forecast. Karen is moving into an area of weaker shear, and should remain in that environment for the next 2-3 days. Thus, strengthening is expected, with the main limiting factor being the current poor organization of the circulation. From 72-120 h, the storm is expected to start entraining dry air, which could limit intensification despite the otherwise favorable shear and sea surface temperature environment. In addition, several of the global models suggest that another round of shear could affect Karen near the 120 h point. If this occurs, the cyclone could end up weaker than forecast in this advisory. The new intensity forecast has minor changes from the previous forecast, and it again lies between the weaker dynamical models and the stronger statistical-dynamical models. Key Messages: 1. Karen is expected to bring heavy rainfall, flash floods and mudslides to Puerto Rico and the U.S. and British Virgin Islands today, where a tropical storm warning is in effect. The rainfall and potential flooding will likely continue on Wednesday even as the center of Karen moves away from Puerto Rico and the Virgin Islands. FORECAST POSITIONS AND MAX WINDS INIT 24/2100Z 18.0N 65.8W 40 KT 45 MPH 12H 25/0600Z 19.6N 65.5W 40 KT 45 MPH 24H 25/1800Z 21.9N 64.9W 45 KT 50 MPH 36H 26/0600Z 24.2N 64.2W 50 KT 60 MPH 48H 26/1800Z 25.9N 63.5W 50 KT 60 MPH 72H 27/1800Z 27.2N 61.9W 55 KT 65 MPH 96H 28/1800Z 27.0N 62.5W 60 KT 70 MPH 120H 29/1800Z 26.5N 65.5W 60 KT 70 MPH $$ Forecaster Beven
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Summary for Tropical Storm Karen (AT2/AL122019)
2019-09-24 22:48:40| National Hurricane Center (Atlantic)
...CENTER OF KAREN NOW NEAR SOUTHEASTERN PUERTO RICO... As of 5:00 PM AST Tue Sep 24 the center of Karen was located near 18.0, -65.8 with movement N at 8 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 45 mph.
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