View Full Version : Hurricane Maria Public Advisory Number 23A

09-21-2017, 07:00 PM
Issued at 800 PM AST Thu Sep 21 2017 000WTNT35 KNHC 212356TCPAT5BULLETINHurricane Maria Intermediate Advisory Number 23ANWS National Hurricane Center Miami FL AL152017800 PM AST Thu Sep 21 2017...LARGE EYE OF HURRICANE MARIA GRADUALLY APPROACHING THE TURKS ANDCAICOS ISLANDS...SUMMARY OF 800 PM AST...0000 UTC...INFORMATION----------------------------------------------LOCATION...20.9N 70.0WABOUT 85 MI...135 KM NNE OF PUERTO PLATA DOMINICAN REPUBLICABOUT 80 MI...130 KM ESE OF GRAND TURK ISLANDMAXIMUM SUSTAINED WINDS...125 MPH...205 KM/HPRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/HMINIMUM CENTRAL PRESSURE...955 MB...28.20 INCHESWATCHES AND WARNINGS--------------------CHANGES WITH THIS ADVISORY:None.SUMMARY OF WATCHES AND WARNINGS IN EFFECT:A Hurricane Warning is in effect for...* 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 HaitiA Tropical Storm Watch is in effect for...* Central BahamasA 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 Tropical Storm Watch means that tropical storm conditions arepossible within the watch area, generally within 48 hours.Interests in the Bahamas should monitor the progress of Maria.For storm information specific to your area, please monitor productsissued by your national meteorological service.DISCUSSION AND 48-HOUR OUTLOOK------------------------------At 800 PM AST (0000 UTC), the large eye of Hurricane Maria waslocated near latitude 20.9 North, longitude 70.0 West. Maria ismoving toward the northwest near 9 mph (15 km/h), and this generalmotion is expected to continue through tonight. A turn toward thenorth-northwest is forecast early Friday, with that motioncontinuing through Saturday. On the forecast track, Maria's eyewill continue to pass offshore of the northern coast of theDominican Republic this evening, and then move near or just east ofthe Turks and Caicos Islands and southeastern Bahamas latertonight and on Friday.Preliminary reports from an Air Force reconnaissance plane indicatethat the maximum sustained winds have increased to around 125 mph(205 km/h) with higher gusts. Maria is a category 3 hurricane onthe Saffir-Simpson Hurricane Wind Scale. Little change in strengthis expected during the next couple of days.Hurricane-force winds extend outward up to 70 miles (110 km) fromthe center, and tropical-storm-force winds extend outward up to 160miles (260 km).The estimated minimum central pressure from the reconnaissanceplane was 955 mb (28.20 inches).HAZARDS AFFECTING LAND----------------------WIND: Hurricane and tropical storm conditions continue acrossportions of the Dominican Republic. Tropical storm conditions arebeginning to spread across the Turks and Caicos Islands and thesoutheastern Bahamas, and hurricane conditions are expected tonightor early Friday. Tropical storm conditions are possible in thecentral Bahamas beginning late Friday.STORM SURGE: A dangerous storm surge accompanied by large anddestructive waves will raise water levels by as much as 4 to 6 feetabove normal tide levels in the hurricane warning area in theDominican Republic, and 1 to 3 ft elsewhere along the northerncoasts of the Dominican Republic 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 rainfallaccumulations through Saturday:Puerto Rico...additional 4 to 8 inches, isolated maximum storm totalamounts 40 inchesNorthern and eastern Dominican Republic, Turks and Caicos, andMayaguana in southeast Bahamas...8 to 16 inches, isolated 20 inchesInagua Islands, Crooked Island, and rest of southeast Bahamas...4 to8 inchesNorthern Haiti...4 to 8 inchesRainfall on these islands will continue to cause life-threateningflash floods and mudslides.SURF: Swells generated by Maria are affecting Puerto Rico, theVirgin Islands, the northern coast of Hispaniola, the Turks andCaicos Islands, and the southeastern Bahamas. These swells willreach the remainder of the Bahamas tonight and should reach portionsof the United States southeastern coast on Friday. These swells arelikely 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 AST.$$Forecaster Avila

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