View Full Version : Hurricane Maria Public Advisory Number 19

09-20-2017, 04:05 PM
Issued at 500 PM AST Wed Sep 20 2017 000WTNT35 KNHC 202038TCPAT5BULLETINHurricane Maria Advisory Number 19NWS National Hurricane Center Miami FL AL152017500 PM AST Wed Sep 20 2017...CATASTROPHIC FLASH FLOODING OCCURRING OVER PORTIONS OF PUERTORICO......CONDITIONS NOW DETERIORATING OVER EASTERN DOMINICAN REPUBLIC...SUMMARY OF 500 PM AST...2100 UTC...INFORMATION----------------------------------------------LOCATION...18.8N 67.3WABOUT 25 MI...45 KM NNW OF AGUADILLA PUERTO RICOABOUT 75 MI...120 KM E OF PUNTA CANA DOMINICAN REPUBLICMAXIMUM SUSTAINED WINDS...110 MPH...175 KM/HPRESENT MOVEMENT...NW OR 305 DEGREES AT 12 MPH...19 KM/HMINIMUM CENTRAL PRESSURE...957 MB...28.26 INCHESWATCHES AND WARNINGS--------------------CHANGES WITH THIS ADVISORY:The Hurricane Warning for the U.S. Virgin Islands has beendiscontinued.The government of Antigua and Barbuda has discontinued theHurricane Warning for the British Virgin Islands.SUMMARY OF WATCHES AND WARNINGS IN EFFECT:A Hurricane Warning is in effect for...* Puerto Rico, Culebra, and Vieques* Dominican Republic from Cabo Engano to Puerto Plata* Turks and Caicos Islands and the Southeastern BahamasA Tropical Storm Warning is in effect for...* Dominican Republic west of Puerto Plata to the northern border ofthe Dominican Republic and Haiti* Dominican Republic west of Cabo Engano to Punta PalenqueA Hurricane Watch is in effect for...* Dominican Republic from Isla Saona to Cabo EnganoA Hurricane Warning means that hurricane conditions are expectedsomewhere within the warning area. Preparations to protect life andproperty should be rushed to completion.A Tropical Storm Warning means that tropical storm conditions areexpected somewhere within the warning area.A Hurricane Watch means that hurricane conditions are possiblewithin the watch area. A watch is typically issued 48 hours beforethe anticipated first occurrence of tropical-storm-force winds,conditions that make outside preparations difficult or dangerous.Interests elsewhere in Hispaniola and the Bahamas should monitor theprogress of Maria.For storm information specific to your area in the United States,including possible inland watches and warnings, please monitorproducts issued by your local National Weather Service forecastoffice. For storm information specific to your area outsidethe United States, please monitor products issued by your nationalmeteorological service.DISCUSSION AND 48-HOUR OUTLOOK------------------------------At 500 PM AST (2100 UTC), the eye of Hurricane Maria was locatednear latitude 18.8 North, longitude 67.3 West. Maria is movingtoward the northwest near 12 mph (19 km/h), and this general motionwith a decrease in forward speed is expected through Thursday night.A turn toward the north-northwest is forecast on Friday. On theforecast track, the center of Maria will continue to move away fromthe northwestern coast of Puerto Rico this evening. The center willthen pass offshore of the northeastern coast of the DominicanRepublic tonight and Thursday and then move near the Turks andCaicos Islands and southeastern Bahamas Thursday night and Friday.Data from an Air Force Reserve Hurricane Hunter aircraft indicatethat maximum sustained winds are near 110 mph (175 km/h) with highergusts. Some strengthening is forecast during the next day or two,and Maria could regain major hurricane status by Thursday.Hurricane-force winds extend outward up to 60 miles (95 km) from thecenter, and tropical-storm-force winds extend outward up to 150miles (240 km).The minimum central pressure based on data from the Air Forceaircraft is 957 mb (28.26 inches).HAZARDS AFFECTING LAND----------------------WIND: Hurricane and tropical storm conditions are still occurringover portions of Puerto Rico. Tropical storm conditions arespreading across the warning areas in the Dominican Republic, andhurricane conditions should start in the hurricane warning areatonight. Tropical storm conditions are expected to begin in theTurks and Caicos Islands and the southeastern Bahamas on Thursday,with hurricane conditions starting Thursday night.STORM SURGE: The combination of a dangerous storm surge and thetide will cause normally dry areas near the coast to be flooded byrising waters moving inland from the shoreline. The water isexpected to reach the following heights above ground if the peaksurge occurs at the time of high tide...Puerto Rico...3 to 5 ftThe deepest water will occur along the immediate coast in areas ofonshore wind over western portions of Puerto Rico, where the surgewill be accompanied by large and destructive waves. Surge-relatedflooding depends on the relative timing of the surge and the tidalcycle, and can vary greatly over short distances. For informationspecific to your area, please see products issued by your localNational Weather Service forecast office.A dangerous storm surge accompanied by large and destructive waveswill raise water levels by as much as 4 to 6 feet above normal tidelevels in the hurricane warning area in the Dominican Republic, and1 to 3 ft elsewhere along the northern coasts of the DominicanRepublic and Haiti.A dangerous storm surge accompanied by large and destructive waveswill raise water levels by as much as 9 to 12 feet above normaltide levels within the hurricane warning area of the southeasternBahamas and the Turks and Caicos Islands.RAINFALL: Maria is expected to produce the following rainfalltotals through Friday:Puerto Rico...20 to 25 inches, isolated 35 inchesU.S. and British Virgin Islands...additional 3 to 5 inchesNorthern and eastern Dominican Republic, Turks and Caicos andsoutheast Bahamas...8 to 16 inches, isolated 20 inchesNorthern Haiti...2 to 4 inchesRainfall on these islands will cause life-threatening flash floodsand mudslidesSURF: Swells generated by Maria are affecting the Leeward Islands,Puerto Rico, and the Virgin Islands. These swells will beginaffecting the northern coast of Hispaniola, the Turks and CaicosIslands, and the Southeastern Bahamas during the next day or two.These swells are likely to cause life-threatening surf and ripcurrent conditions. Please consult products from your local weatheroffice.NEXT ADVISORY-------------Next intermediate advisory at 800 PM AST.Next complete advisory at 1100 PM AST.$$Forecaster Berg

More... (http://www.nhc.noaa.gov/text/refresh/MIATCPAT5+shtml/202038.shtml)