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Hurricane Hanna Forecast Advisory Number 12

2020-07-25 22:54:09| National Hurricane Center (Atlantic)

Issued at 2100 UTC SAT JUL 25 2020 000 WTNT23 KNHC 252053 TCMAT3 HURRICANE HANNA FORECAST/ADVISORY NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082020 2100 UTC SAT JUL 25 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE HURRICANE WARNING HAS BEEN REPLACED BY A TROPICAL STORM WARNING NORTH OF PORT ARANSAS TEXAS. THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED NORTH OF PORT O'CONNOR TEXAS. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * PORT MANSFIELD TO SARGENT TEXAS A HURRICANE WARNING IS IN EFFECT FOR... * PORT MANSFIELD TO PORT ARANSAS TEXAS A TROPICAL STORM WARNING IS IN EFFECT FOR... * BARRA EL MEZQUITAL MEXICO TO PORT MANSFIELD TEXAS * PORT ARANSAS TO PORT O'CONNOR 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 24 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 HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE OCCURRING WITHIN THE WARNING AREA. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD HAVE ALREADY BEEN COMPLETED. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE OCCURRING WITHIN THE WARNING AREAS. INTERESTS ELSEWHERE ALONG THE TEXAS AND LOUISIANA COASTS SHOULD MONITOR THE PROGRESS OF HANNA. INTERESTS IN NORTHEASTERN MEXICO SHOULD ALSO MONITOR THE PROGRESS OF THIS HURRICANE. HURRICANE CENTER LOCATED NEAR 26.8N 97.2W AT 25/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST-SOUTHWEST OR 255 DEGREES AT 7 KT ESTIMATED MINIMUM CENTRAL PRESSURE 973 MB EYE DIAMETER 30 NM MAX SUSTAINED WINDS 80 KT WITH GUSTS TO 100 KT. 64 KT....... 25NE 20SE 20SW 25NW. 50 KT....... 50NE 30SE 30SW 50NW. 34 KT....... 80NE 80SE 50SW 80NW. 12 FT SEAS..120NE 90SE 30SW 60NW. 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 26.8N 97.2W AT 25/2100Z AT 25/1800Z CENTER WAS LOCATED NEAR 27.0N 96.8W FORECAST VALID 26/0600Z 26.7N 98.4W...INLAND MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 0SE 0SW 20NW. 34 KT... 80NE 80SE 30SW 60NW. FORECAST VALID 26/1800Z 26.0N 100.0W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 27/0600Z 25.5N 101.4W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 27/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 26.8N 97.2W INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 26/0000Z NEXT ADVISORY AT 26/0300Z $$ FORECASTER STEWART

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Summary for Hurricane Hanna (AT3/AL082020)

2020-07-25 21:54:34| National Hurricane Center (Atlantic)

...HANNA STRENGTHENS SOME MORE AS IT NEARS THE TEXAS COAST... ...HURRICANE CONDITIONS OCCURRING ON PORTIONS OF PADRE ISLAND... As of 4:00 PM CDT Sat Jul 25 the center of Hanna was located near 26.8, -97.2 with movement WSW at 8 mph. The minimum central pressure was 973 mb with maximum sustained winds of about 90 mph.

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Summary for Hurricane Hanna (AT3/AL082020)

2020-07-25 20:47:05| National Hurricane Center (Atlantic)

...AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT AND DOPPLER RADARS FINDS HANNA HAS STRENGTHENED... As of 2:00 PM CDT Sat Jul 25 the center of Hanna was located near 27.0, -96.8 with movement W at 8 mph. The minimum central pressure was 973 mb with maximum sustained winds of about 85 mph.

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Hurricane Hanna Update Statement

2020-07-25 20:47:05| National Hurricane Center (Atlantic)

Issued at 200 PM CDT Sat Jul 25 2020 000 WTNT63 KNHC 251846 TCUAT3 Hurricane Hanna Tropical Cyclone Update NWS National Hurricane Center Miami FL AL082020 200 PM CDT Sat Jul 25 2020 ...AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT AND DOPPLER RADARS FINDS HANNA HAS STRENGTHENED... A TCOON observing station at Laguna Madre, Texas, recently reported a sustained wind of 63 mph (102 km/h) and a gust to 79 mph (128 km/h). Data from the Air Force Reserve reconnaissance aircraft indicate that the minimum central pressure inside the eye of Hanna is 973 mb (28.73 inches). SUMMARY OF 200 PM CDT...1900 UTC...INFORMATION ---------------------------------------------- LOCATION...27.0N 96.8W ABOUT 55 MI...90 KM ENE OF PORT MANSFIELD TEXAS ABOUT 75 MI...120 KM SE OF CORPUS CHRISTI TEXAS MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H PRESENT MOVEMENT...W OR 260 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...973 MB...28.73 INCHES $$ Forecaster Stewart

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Hurricane Hanna Public Advisory Number 11A

2020-07-25 19:51:34| National Hurricane Center (Atlantic)

Issued at 100 PM CDT Sat Jul 25 2020 000 WTNT33 KNHC 251751 TCPAT3 BULLETIN Hurricane Hanna Intermediate Advisory Number 11A NWS National Hurricane Center Miami FL AL082020 100 PM CDT Sat Jul 25 2020 ...EYE OF HANNA GETTING CLOSER TO THE SOUTH TEXAS COAST... ...HURRICANE-FORCE WINDS JUST OFFSHORE PADRE ISLAND... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...27.0N 96.7W ABOUT 50 MI...80 KM ENE OF PORT MANSFIELD TEXAS ABOUT 70 MI...115 KM SE OF CORPUS CHRISTI TEXAS MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H PRESENT MOVEMENT...W OR 265 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...977 MB...28.85 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 Mansfield to Sargent Texas A Hurricane Warning is in effect for... * Port Mansfield to Mesquite Bay Texas A Tropical Storm Warning is in effect for... * Barra el Mezquital Mexico to Port Mansfield Texas * Mesquite Bay to Sargent 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 24 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 Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, in this case within the next 12 hours. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 12 hours. Interests elsewhere along the Texas and Louisiana coasts should monitor the progress of Hanna. Interests in northeastern Mexico should also monitor the progress of this hurricane. 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 the eye of Hurricane Hanna was located by NOAA Doppler weather radars and buoy data near latitude 27.0 North, longitude 96.7 West. Hanna is moving toward the west near 8 mph (13 km/h). A gradual turn toward the west-southwest is expected by late afternoon and tonight, and that motion should continue through Sunday. On the forecast track, the center of Hanna should make landfall along the Texas coast within the hurricane warning area by late afternoon or early this evening. Data from Doppler weather radars indicate that maximum sustained winds are near 80 mph (130 km/h) with higher gusts. Some slight strengthening is still possible before Hanna makes landfall later today. Rapid weakening is expected after Hanna moves inland. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). A TCOON observation station at Laguna Madre, Texas, recently reported a sustained wind of 54 mph (91 km/h) and a gust to 70 mph (113 km/h). Reports from NOAA buoy 42020 located near the center of Hanna's eye indicate that the minimum central pressure is 977 mb (28.85 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Hanna can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC and on the web at www.hurricanes.gov/text/MIATCDAT3.shtml. 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... Baffin Bay to Port Aransas including Corpus Christi Bay...4-6 ft Port Mansfield to Baffin Bay...2-4 ft North of Port Aransas to Sargent including Copano Bay , Aransas Bay, San Antonio Bay, and Matagorda Bay...2-4 ft Mouth of the Rio Grande to Port Mansfield...1-3 ft North of Sargent to High Island including Galveston Bay...1-2 ft The deepest water will occur along the immediate coast near and to the right of the landfall location. 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: Hurricane conditions are expected in the warning area this afternoon. Tropical storm conditions are occuring in portions of the warning area and will spread inland through the afternoon and evening. RAINFALL: Hanna is expected to produce 6 to 12 inches of rain with isolated maximum totals of 18 inches through Sunday night in south Texas and into the Mexican states of Coahuila, Nuevo Leon, and northern Tamaulipas. This rain may result in life-threatening flash flooding, rapid rises on small streams, and isolated minor to moderate river flooding in south Texas. 3 to 5 inches of rain is expected along the upper Texas and Louisiana coasts. SURF: Swells generated by Hanna are expected to increase and affect much of the Texas and Louisiana coasts during the next couple of days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A few tornadoes are possible today and overnight over parts of the lower to middle Texas coastal plain. NEXT ADVISORY ------------- Next complete advisory at 400 PM CDT. $$ Forecaster Stewart

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