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Tropical Storm Beta Wind Speed Probabilities Number 13

2020-09-20 22:57:05| National Hurricane Center (Atlantic)

Issued at 2100 UTC SUN SEP 20 2020 000 FONT12 KNHC 202056 PWSAT2 TROPICAL STORM BETA WIND SPEED PROBABILITIES NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL AL222020 2100 UTC SUN SEP 20 2020 AT 2100Z THE CENTER OF TROPICAL STORM BETA WAS LOCATED NEAR LATITUDE 27.7 NORTH...LONGITUDE 94.0 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 50 KTS...60 MPH...95 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 18Z SUN AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 18Z SUN 06Z MON 18Z MON 06Z TUE 18Z TUE 18Z WED 18Z THU PERIODS TO TO TO TO TO TO TO 06Z MON 18Z MON 06Z TUE 18Z TUE 18Z WED 18Z THU 18Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT MOBILE AL 34 X X( X) X( X) X( X) 1( 1) 1( 2) 1( 3) GULFPORT MS 34 X X( X) X( X) X( X) 1( 1) 2( 3) 1( 4) STENNIS MS 34 X X( X) X( X) X( X) 1( 1) 3( 4) 1( 5) BURAS LA 34 X X( X) X( X) X( X) 1( 1) 3( 4) 1( 5) GFMX 280N 890W 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) JACKSON MS 34 X X( X) X( X) X( X) 1( 1) 2( 3) 2( 5) NEW ORLEANS LA 34 X X( X) 1( 1) X( 1) 1( 2) 3( 5) 2( 7) GFMX 280N 910W 34 2 2( 4) X( 4) 1( 5) 4( 9) 4(13) X(13) BATON ROUGE LA 34 X 1( 1) X( 1) 1( 2) 3( 5) 3( 8) 2(10) MORGAN CITY LA 34 1 X( 1) 1( 2) X( 2) 4( 6) 3( 9) 1(10) ALEXANDRIA LA 34 1 1( 2) 1( 3) 1( 4) 4( 8) 2(10) 1(11) LAFAYETTE LA 34 1 1( 2) 1( 3) 1( 4) 4( 8) 4(12) 1(13) NEW IBERIA LA 34 1 1( 2) 1( 3) 1( 4) 4( 8) 4(12) 1(13) GFMX 280N 930W 34 99 X(99) X(99) X(99) X(99) X(99) X(99) GFMX 280N 930W 50 99 X(99) X(99) X(99) X(99) X(99) X(99) SHREVEPORT LA 34 X 1( 1) 2( 3) 1( 4) 2( 6) 2( 8) X( 8) FORT POLK LA 34 1 2( 3) 3( 6) 2( 8) 4(12) 2(14) 1(15) LAKE CHARLES 34 6 2( 8) 2(10) 2(12) 7(19) 3(22) 1(23) LAKE CHARLES 50 X X( X) X( X) X( X) 2( 2) 1( 3) X( 3) CAMERON LA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) CAMERON LA 50 1 X( 1) X( 1) X( 1) 3( 4) 1( 5) 1( 6) JASPER TX 34 3 2( 5) 4( 9) 4(13) 5(18) 2(20) X(20) KOUNTZE TX 34 11 4(15) 5(20) 5(25) 6(31) 2(33) X(33) KOUNTZE TX 50 X X( X) 1( 1) 1( 2) 2( 4) X( 4) X( 4) PORT ARTHUR TX 34 24 2(26) 3(29) 4(33) 5(38) 2(40) 1(41) PORT ARTHUR TX 50 X X( X) 1( 1) X( 1) 3( 4) X( 4) X( 4) GALVESTON TX 34 99 X(99) X(99) X(99) X(99) X(99) X(99) GALVESTON TX 50 6 6(12) 1(13) 1(14) 3(17) 1(18) X(18) GALVESTON TX 64 X X( X) X( X) 1( 1) X( 1) 1( 2) X( 2) HOUSTON TX 34 39 13(52) 7(59) 4(63) 2(65) X(65) 1(66) HOUSTON TX 50 X 2( 2) 3( 5) 3( 8) 1( 9) X( 9) X( 9) HOUSTON TX 64 X X( X) 1( 1) X( 1) 1( 2) X( 2) X( 2) AUSTIN TX 34 1 5( 6) 19(25) 7(32) 2(34) X(34) X(34) AUSTIN TX 50 X X( X) 2( 2) 1( 3) X( 3) X( 3) X( 3) SAN ANTONIO TX 34 1 3( 4) 14(18) 6(24) 2(26) X(26) X(26) SAN ANTONIO TX 50 X X( X) 1( 1) 1( 2) 1( 3) X( 3) X( 3) FREEPORT TX 34 89 5(94) X(94) 1(95) X(95) X(95) X(95) FREEPORT TX 50 3 9(12) 4(16) 2(18) 1(19) X(19) X(19) FREEPORT TX 64 X 1( 1) X( 1) 1( 2) X( 2) X( 2) X( 2) GFMX 280N 950W 34 99 X(99) X(99) X(99) X(99) X(99) X(99) GFMX 280N 950W 50 23 9(32) X(32) 1(33) 2(35) X(35) X(35) GFMX 280N 950W 64 3 X( 3) 1( 4) X( 4) X( 4) 1( 5) X( 5) HIGH ISLAND TX 34 99 X(99) X(99) X(99) X(99) X(99) X(99) HIGH ISLAND TX 50 1 X( 1) 1( 2) 1( 3) 3( 6) X( 6) X( 6) MATAGORDA TX 34 68 17(85) 2(87) 2(89) X(89) 1(90) X(90) MATAGORDA TX 50 2 17(19) 5(24) 2(26) 1(27) X(27) X(27) MATAGORDA TX 64 X 3( 3) 1( 4) 1( 5) X( 5) X( 5) X( 5) PORT O CONNOR 34 44 22(66) 4(70) 4(74) 1(75) 1(76) X(76) PORT O CONNOR 50 1 11(12) 6(18) 3(21) 1(22) X(22) X(22) PORT O CONNOR 64 X 2( 2) 2( 4) X( 4) X( 4) X( 4) X( 4) ROCKPORT TX 34 5 14(19) 11(30) 7(37) 1(38) 1(39) X(39) ROCKPORT TX 50 X 1( 1) 4( 5) 4( 9) X( 9) X( 9) X( 9) ROCKPORT TX 64 X X( X) 1( 1) X( 1) X( 1) X( 1) X( 1) CORPUS CHRISTI 34 1 7( 8) 10(18) 6(24) 1(25) 1(26) X(26) CORPUS CHRISTI 50 X X( X) 2( 2) 1( 3) 1( 4) X( 4) X( 4) GFMX 270N 960W 34 11 5(16) 4(20) 4(24) 4(28) X(28) 1(29) GFMX 270N 960W 50 1 1( 2) 1( 3) 1( 4) 1( 5) X( 5) X( 5) MCALLEN TX 34 X 1( 1) 1( 2) 2( 4) 1( 5) X( 5) 1( 6) HARLINGEN TX 34 X 1( 1) 2( 3) 2( 5) 1( 6) X( 6) X( 6) BROWNSVILLE TX 34 X 1( 1) 2( 3) 1( 4) 1( 5) 1( 6) X( 6) GFMX 250N 960W 34 1 1( 2) 1( 3) 1( 4) 2( 6) X( 6) 1( 7) PENSACOLA NAS 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) KEESLER AB 34 X X( X) X( X) X( X) 1( 1) 2( 3) 1( 4) $$ FORECASTER STEWART

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Tropical Storm Beta Forecast Advisory Number 13

2020-09-20 22:56:35| National Hurricane Center (Atlantic)

Issued at 2100 UTC SUN SEP 20 2020 543 WTNT22 KNHC 202056 TCMAT2 TROPICAL STORM BETA FORECAST/ADVISORY NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL AL222020 2100 UTC SUN SEP 20 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * PORT ARANSAS...TEXAS TO ROCKEFELLER WILDLIFE REFUGE LOUISIANA... INCLUDING COPANO BAY...ARANSAS BAY...SAN ANTONIO BAY...MATAGORDA BAY...GALVESTON BAY...SABINE LAKE...AND LAKE CALCASIEU A TROPICAL STORM WARNING IS IN EFFECT FOR... * PORT ARANSAS TEXAS TO MORGAN CITY LOUISIANA A TROPICAL STORM WATCH IS IN EFFECT FOR... * BAFFIN BAY TO PORT ARANSAS TEXAS A STORM SURGE WARNING MEANS THERE IS A DANGER OF LIFE-THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE COASTLINE... DURING THE NEXT 36 HOURS IN THE INDICATED LOCATIONS. FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT HURRICANES.GOV. THIS IS A LIFE-THREATENING SITUATION. PERSONS LOCATED WITHIN THESE AREAS SHOULD TAKE ALL NECESSARY ACTIONS TO PROTECT LIFE AND PROPERTY FROM RISING WATER AND THE POTENTIAL FOR OTHER DANGEROUS CONDITIONS. PROMPTLY FOLLOW EVACUATION AND OTHER INSTRUCTIONS FROM LOCAL OFFICIALS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT 24 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN THE NEXT 24 HOURS. TROPICAL STORM CENTER LOCATED NEAR 27.7N 94.0W AT 20/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 5 KT ESTIMATED MINIMUM CENTRAL PRESSURE 996 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 70NE 0SE 0SW 0NW. 34 KT.......170NE 30SE 40SW 140NW. 12 FT SEAS.. 90NE 60SE 180SW 180NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 27.7N 94.0W AT 20/2100Z AT 20/1800Z CENTER WAS LOCATED NEAR 27.6N 93.7W FORECAST VALID 21/0600Z 28.1N 95.0W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 70NE 0SE 0SW 20NW. 34 KT...140NE 30SE 40SW 120NW. FORECAST VALID 21/1800Z 28.6N 96.1W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 60NE 0SE 0SW 20NW. 34 KT...130NE 40SE 40SW 90NW. FORECAST VALID 22/0600Z 29.0N 96.7W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT...110NE 40SE 40SW 50NW. FORECAST VALID 22/1800Z 29.4N 96.4W...INLAND MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 80NE 40SE 40SW 20NW. FORECAST VALID 23/0600Z 29.7N 95.7W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 50SE 50SW 0NW. FORECAST VALID 23/1800Z 30.0N 94.7W...INLAND MAX WIND 30 KT...GUSTS 40 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 24/1800Z 32.0N 91.8W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. OUTLOOK VALID 25/1800Z 34.4N 89.5W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 27.7N 94.0W INTERMEDIATE PUBLIC ADVISORY...WTNT32 KNHC/MIATCPAT2...AT 21/0000Z NEXT ADVISORY AT 21/0300Z $$ FORECASTER STEWART

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Summary for Tropical Storm Beta (AT2/AL222020)

2020-09-20 19:52:06| National Hurricane Center (Atlantic)

...RECONNAISSANCE AIRCRAFT AND RADAR DATA INDICATE THAT BETA HAS REDEVELOPED A LITTLE FARTHER TO THE WEST... As of 1:00 PM CDT Sun Sep 20 the center of Beta was located near 27.6, -93.6 with movement WNW at 5 mph. The minimum central pressure was 996 mb with maximum sustained winds of about 60 mph.

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Tropical Storm Beta Public Advisory Number 12A

2020-09-20 19:52:06| National Hurricane Center (Atlantic)

Issued at 100 PM CDT Sun Sep 20 2020 000 WTNT32 KNHC 201751 TCPAT2 BULLETIN Tropical Storm Beta Intermediate Advisory Number 12A NWS National Hurricane Center Miami FL AL222020 100 PM CDT Sun Sep 20 2020 ...RECONNAISSANCE AIRCRAFT AND RADAR DATA INDICATE THAT BETA HAS REDEVELOPED A LITTLE FARTHER TO THE WEST... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...27.6N 93.6W ABOUT 140 MI...225 KM SE OF GALVESTON TEXAS ABOUT 180 MI...290 KM ESE OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Port Aransas, Texas to Rockefeller Wildlife Refuge, Louisiana, including Copano Bay, Aransas Bay, San Antonio Bay, Matagorda Bay, Galveston Bay, Sabine Lake, and Lake Calcasieu A Tropical Storm Warning is in effect for... * Port Aransas Texas to Morgan City Louisiana A Tropical Storm Watch is in effect for... * Baffin Bay to Port Aransas Texas A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, in this case within the next 36 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 100 PM CDT (1800 UTC), the center of Tropical Storm Beta was located by an Air Force Reserve reconnaissance aircraft and NOAA Doppler weather radars near latitude 27.6 North, longitude 93.6 West. Beta is moving toward the west-northwest near 5 mph (7 km/h), and this general motion is forecast to continue during the next day or so. A decrease in forward speed and a turn to the north and northeast is expected Monday night and Tuesday. On the forecast track, the center of Beta will continue to move toward the coast of Texas and will likely move inland by Monday night, and remain close to the coast of southeastern Texas on Tuesday. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Little change in strength is forecast during the next couple of days before Beta reaches the Texas coast. Weakening is anticipated once Beta moves inland. Tropical-storm-force winds extend outward up to 195 miles (315 km) from the center. The estimated minimum central pressure based on data from the reconnaissance aircraft is 996 mb (29.42 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Beta can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... San Luis Pass, TX to Sabine Pass, TX including Galveston Bay...3-5 ft Port Aransas, TX to San Luis Pass, TX including Copano Bay, Aransas Bay, San Antonio Bay, and Matagorda Bay2-4 ft Sabine Pass, TX to Rockefeller Wildlife Refuge, LA including Sabine Lake and Calcasieu Lake2-4 ft Rockefeller Wildlife Refuge, LA to Ocean Springs, MS including Vermilion Bay, Lake Borgne, Lake Pontchartrain, and Lake Maurepas...1-3 ft Baffin Bay, TX to Port Aransas, TX including Corpus Christi Bay and Baffin Bay... 1-3 ft Mouth of the Rio Grande to Baffin Bay, TX...1-2 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are occurring in the tropical storm warning area along the southwestern Louisiana coast and will spread westward to the warning areas in Texas late today through early Monday. Tropical storm conditions are possible within the tropical storm watch area along the south Texas coast on Monday. RAINFALL: Through Thursday, Beta is expected to produce rainfall accumulations of 8 to 12 inches with isolated totals of 20 inches from the middle Texas coast to southern Louisiana, with 4 to 8 inches spreading northward into the lower Mississippi River Valley by mid-week. Flash and urban flooding is likely, as well as minor to isolated moderate river flooding. TORNADOES: A tornado or two could occur Monday near the middle-to-upper Texas coast or the southwestern Louisiana coast. SURF: Swells are increasing and reaching the coast of Texas and the Gulf Coast of Mexico, generated by a combination of Beta and a cold front entering the northern Gulf of Mexico. 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 400 PM CDT. $$ Forecaster Stewart

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