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Atlantic Tropical Weather Outlook
2020-08-05 07:20:47| National Hurricane Center (Atlantic)
000 ABNT20 KNHC 050520 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 AM EDT Wed Aug 5 2020 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Post-Tropical Cyclone Isaias, which is moving rapidly north-northeastward over eastern Quebec. A small low pressure area located a few hundred miles southwest of Bermuda is producing minimal shower activity. This low is forecast to drift southwestward during the next couple of days, and any development is expected to be slow to occur due to dry air and increasing upper-level winds. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...10 percent. $$ Forecaster Berg
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Tropical Storm Isaias Graphics
2020-08-05 01:57:54| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Tue, 04 Aug 2020 23:57:54 GMT Wind Speed Probabilities last updated Tue, 04 Aug 2020 21:24:43 GMT
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Tropical Storm Isaias Public Advisory Number 31A
2020-08-05 01:50:16| National Hurricane Center (Atlantic)
Issued at 800 PM EDT Tue Aug 04 2020 000 WTNT34 KNHC 042350 TCPAT4 BULLETIN Tropical Storm Isaias Intermediate Advisory Number 31A NWS National Hurricane Center Miami FL AL092020 800 PM EDT Tue Aug 04 2020 ...CENTER OF ISAIAS NOW MOVING THROUGH THE NEW ENGLAND STATES... SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...43.6N 73.0W ABOUT 5 MI...10 KM NNW OF RUTLAND VERMONT MAXIMUM SUSTAINED WINDS...50 MPH...80 KM/H PRESENT MOVEMENT...NNE OR 20 DEGREES AT 40 MPH...65 KM/H MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning has been discontinued west of Watch Hill, Rhode Island, including Long Island and Long Island Sound. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Watch Hill Rhode Island to Stonington Maine * Martha's Vineyard, Nantucket, and Block Island A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 6 to 12 hours. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 800 PM EDT (0000 UTC), the center of Tropical Storm Isaias was located by NOAA Doppler weather radars and surface observations near latitude 43.6 North, longitude 73.0 West. Isaias is moving toward the north-northeast near 40 mph (65 km/h), and this general motion is expected through tonight. On the forecast track, the center of Isaias will continue to move farther inland over eastern New York and Vermont this afternoon and evening, and over southern Canada tonight. Data from Doppler weather radars along with surface observations indicate that maximum sustained winds have decreased to near 50 mph (80 km/h) with higher gusts. Continued weakening is expected this evening, and Isaias is forecast to become post-tropical tonight or early Wednesday. Tropical-storm-force winds extend outward up to 205 miles (335 km) from the center. During the past few hours, there have been numerous reports of wind gusts of 40-50 mph (65-80 km/h) across portions of Rhode Island, eastern Massachusetts, and southeastern New Hampshire. The estimated minimum central pressure based on surface observations is 997 mb (29.44 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Isaias can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml. WIND: Widespread tropical-storm conditions are expected tonight in the tropical storm warning area in southern New England. These winds could cause significant tree damage and power outages. Gale-force winds are expected to spread into southeastern Quebec tonight and Wednesday. See products issued by Environment Canada for more information. RAINFALL: Rainfall accumulations of 1 to 3 inches are expected along and near the track of Isaias across northeast New York, northern Vermont, northern New Hampshire, and Southern Quebec. Heavy rainfall near the path of Isaias could result in flash flooding, particularly through urban areas and the surrounding terrain of the Adirondack and Green Mountain Ranges through tonight. Scattered minor to moderate and isolated major river flooding is ongoing or forecast across portions of the Mid-Atlantic. Quick-responding rivers in the Northeast will also be susceptible to minor and possible moderate river flooding. TORNADOES: A couple of tornadoes are possible across southern New England through this evening. SURF: Swells generated by Isaias will spread northward along the mid-Atlantic and Northeast coasts of the United States through tonight. 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 1100 PM EDT. $$ Forecaster Beven
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Atlantic Tropical Weather Outlook
2020-08-05 01:44:46| National Hurricane Center (Atlantic)
000 ABNT20 KNHC 042344 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 PM EDT Tue Aug 4 2020 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Tropical Storm Isaias which is rapidly moving northeastward over the northeastern U.S. A small well-defined low has formed within a broader trough of low pressure located a few hundred miles southwest of Bermuda. This system is producing very little thunderstorm activity at this time, but some slight development is possible while the system moves little during the next couple of days. A southwestward drift is forecast on Thursday and Friday. * Formation chance through 48 hours...low...20 percent. * Formation chance through 5 days...low...20 percent. $$ Forecaster Zelinsky
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Eastern North Pacific Tropical Weather Outlook
2020-08-05 01:44:46| National Hurricane Center (East Pacific)
000 ABPZ20 KNHC 042344 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 PM PDT Tue Aug 4 2020 For the eastern North Pacific...east of 140 degrees west longitude: An area of low pressure is forecast to form south or southwest of the southern coast of Mexico over the weekend. Environmental conditions are forecast to be conducive for at least gradual development after that while the system moves generally west-northwestward. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...20 percent. $$ Forecaster Zelinsky
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