View Full Version : Hurricane Maria Public Advisory Number 19A

09-20-2017, 08:15 PM
Issued at 800 PM AST Wed Sep 20 2017 000WTNT35 KNHC 202352TCPAT5BULLETINHurricane Maria Intermediate Advisory Number 19ANWS National Hurricane Center Miami FL AL152017800 PM AST Wed Sep 20 2017...CORE OF DANGEROUS HURRICANE MARIA GRADUALLY MOVING AWAY FROMPUERTO RICO......CONDITIONS NOW DETERIORATING OVER EASTERN DOMINICAN REPUBLIC...SUMMARY OF 800 PM AST...0000 UTC...INFORMATION----------------------------------------------LOCATION...18.9N 67.5WABOUT 55 MI...90 KM ENE 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...958 MB...28.29 INCHESWATCHES AND WARNINGS--------------------CHANGES WITH THIS ADVISORY:NoneSUMMARY 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, in this case within the next 12 hours.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 outside theUnited States, please monitor products issued by your nationalmeteorological service.DISCUSSION AND 48-HOUR OUTLOOK------------------------------At 800 PM AST (0000 UTC), the eye of Hurricane Maria was locatedby an Air Force reconnaissance aircraft near latitude 18.9 North,longitude 67.5 West. Maria is moving toward the northwest near 12mph (19 km/h), and this general motion with a decrease in forwardspeed is expected through Thursday night. A turn toward thenorth-northwest is forecast on Friday. On the forecast track, thecore of Hurricane Maria will continue to move away from thenorthwestern coast of Puerto Rico this evening. The core will thenpass offshore of the northeastern coast of the Dominican Republictonight and Thursday and then move near the Turks and Caicos Islandsand southeastern Bahamas Thursday night and Friday.Preliminary data from an Air Force Reserve Hurricane Hunter aircraftindicate that maximum sustained winds remain near 110 mph (175km/h) with higher gusts. Some strengthening is forecast during thenext day or two, and Maria could regain major hurricane status byThursday.Hurricane-force winds extend outward up to 60 miles (95 km) fromthe center, and tropical-storm-force winds extend outward up to 150miles (240 km).The minimum central pressure based on data from the Air Forceaircraft remain 958 mb (28.29 inches).HAZARDS AFFECTING LAND----------------------WIND: Hurricane and tropical storm conditions are still occurringover portions of Puerto Rico but should gradually subside thisevening. Tropical storm conditions are spreading across the warningareas in the Dominican Republic, and hurricane conditions shouldstart in the hurricane warning area tonight. Tropical stormconditions are expected to begin in the Turks and Caicos Islands andthe southeastern Bahamas on Thursday, with hurricane conditionsstarting 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 complete advisory at 1100 PM AST.$$Forecaster Avila

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