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Tropical Storm Gamma Public Advisory Number 2A
2020-10-03 01:57:50| National Hurricane Center (Atlantic)
Issued at 700 PM CDT Fri Oct 02 2020 000 WTNT35 KNHC 022357 TCPAT5 BULLETIN Tropical Storm Gamma Intermediate Advisory Number 2A NWS National Hurricane Center Miami FL AL252020 700 PM CDT Fri Oct 02 2020 ...DEPRESSION BECOMES TROPICAL STORM GAMMA OVER THE NORTHWESTERN CARIBBEAN SEA... SUMMARY OF 700 PM CDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...18.8N 85.8W ABOUT 135 MI...220 KM SSE OF COZUMEL MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Punta Herrero to Cabo Catoche Mexico A Tropical Storm Watch is in effect for... * South of Punta Herrero to Puerto Costa Maya Mexico * West of Cabo Catoche to Dzilam Mexico 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, generally within 48 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 700 PM CDT (0000 UTC), the center of Tropical Storm Gamma was located near latitude 18.8 North, longitude 85.8 West. Gamma is moving toward the northwest near 9 mph (15 km/h), and a gradual turn toward the north-northwest with a decrease in forward speed is expected over the next couple of days. On the forecast track, the center of the tropical cyclone should be near the northeastern Yucatan Peninsula on Saturday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Slow strengthening is forecast during the next few days. The estimated minimum central pressure based on data from the Air Force Hurricane Hunters is 1000 mb (29.53 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Gamma can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT5.shtml. RAINFALL: Gamma is expected to produce rainfall of 4 to 8 inches with isolated maximum amounts of 12 inches in portions of the Yucatan Peninsula and far western Cuba. A separate area of significant rain is expected to develop well away from the center in the Mexican states of Campeche, Tabasco, and northern Chiapas with rainfall of 8 to 12 inches and isolated maximum amounts of 20 inches. This rainfall may produce life-threatening flash floods and mudslides. Rainfall of 1 to 3 inches with maximum amounts of 5 inches is expected in the Bay Islands of Honduras and over the Cayman Islands. WIND: Tropical storm conditions are expected within the Tropical Storm Warning area by Saturday morning, and are possible within the Tropical Storm Watch area on Saturday and Sunday. NEXT ADVISORY ------------- Next complete advisory at 1000 PM CDT. $$ Forecaster Cangialosi
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Eastern North Pacific Tropical Weather Outlook
2020-10-03 01:11:23| National Hurricane Center (East Pacific)
000 ABPZ20 KNHC 022311 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 PM PDT Fri Oct 2 2020 For the eastern North Pacific...east of 140 degrees west longitude: The National Hurricane Center is issuing advisories on Hurricane Marie, located a little more than 1000 miles west-southwest of the southern tip of the Baja California peninsula. A broad area of low pressure is expected to form several hundred miles southwest of the coast of southwestern Mexico this weekend. Some development of this system is possible early next week while it moves westward at 5 to 10 mph. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...20 percent. Another area of low pressure could form south or southeast of the Gulf of Tehuantepec early next week. Gradual development of this system will be possible thereafter while it drifts near or south of southern coasts of Mexico and Guatemala. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...20 percent. $$ Forecaster Zelinsky
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Tropical Depression Twenty-Five Graphics
2020-10-02 22:36:45| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 02 Oct 2020 20:36:45 GMT Wind Speed Probabilities last updated Fri, 02 Oct 2020 20:36:45 GMT
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Tropical Depression Twenty-Five Forecast Discussion Number 2
2020-10-02 22:34:45| National Hurricane Center (Atlantic)
Issued at 400 PM CDT Fri Oct 02 2020 000 WTNT45 KNHC 022034 TCDAT5 Tropical Depression Twenty-Five Discussion Number 2 NWS National Hurricane Center Miami FL AL252020 400 PM CDT Fri Oct 02 2020 Convective banding features have become a little better defined over the southern portion of the circulation, but otherwise the system has not changed much in organization since earlier today. The current intensity estimate remains at 30 kt in agreement with a Dvorak estimate from TAFB, and scatterometer observations from a few hours ago. The SHIPS model output now shows some south-southwesterly shear affecting the system during the next few days. Otherwise, the environment should favor at least gradual strengthening, and the cyclone is likely to become a tropical storm prior to moving near the Yucatan Peninsula. The official intensity forecast is within the range of most of the model guidance. The initial motion estimate is the same as in the morning advisory, 315/8 kt. The depression should move along the southwestern periphery of a mid-tropospheric high pressure area for the next couple of days, causing the cyclone to move on a northwestward to north-northwestward heading. Later in the forecast period, the global models build a weak ridge across the northern half of the Gulf of Mexico. This should induce the cyclone to turn westward or even a little south of west in 3-5 days. The latest NHC forecast lies between the simple and corrected dynamical model consensus predictions, TVCA and HCCA, and is quite similar to the previous official forecast. At this time, the biggest threat from this slow-moving system is rain and flooding, particularly near and over mountainous terrain. KEY MESSAGES: 1. The system is expected to produce heavy rainfall that could result in life-threatening flash flooding over portions of the Yucatan Peninsula, far western Cuba and well away from the center in the Mexican states of Campeche, Tabasco, and northern Chiapas. 2. The depression is forecast to become a tropical storm and bring tropical storm conditions to portions of the Yucatan Peninsula on Saturday, where a Tropical Storm Warning is in effect. FORECAST POSITIONS AND MAX WINDS INIT 02/2100Z 18.8N 85.3W 30 KT 35 MPH 12H 03/0600Z 19.5N 86.1W 35 KT 40 MPH 24H 03/1800Z 20.5N 87.0W 40 KT 45 MPH 36H 04/0600Z 21.6N 87.5W 40 KT 45 MPH 48H 04/1800Z 22.3N 87.7W 40 KT 45 MPH 60H 05/0600Z 22.5N 88.0W 45 KT 50 MPH 72H 05/1800Z 22.5N 88.8W 50 KT 60 MPH 96H 06/1800Z 22.5N 91.0W 50 KT 60 MPH 120H 07/1800Z 22.0N 92.5W 50 KT 60 MPH $$ Forecaster Pasch
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Summary for Tropical Depression Twenty-Five (AT5/AL252020)
2020-10-02 22:34:15| National Hurricane Center (Atlantic)
...DEPRESSION LIKELY TO BECOME A TROPICAL STORM TONIGHT... As of 4:00 PM CDT Fri Oct 2 the center of Twenty-Five was located near 18.8, -85.3 with movement NW at 9 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 35 mph.
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