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Summary for Tropical Storm Olaf (EP5/EP152021)
2021-09-08 16:39:37| National Hurricane Center (East Pacific)
...DEPRESSION STRENGTHENS INTO TROPICAL STORM OLAF... As of 9:00 AM MDT Wed Sep 8 the center of Olaf was located near 18.9, -107.5 with movement NW at 7 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.
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Tropical Storm Olaf Public Advisory Number 4
2021-09-08 16:39:37| National Hurricane Center (East Pacific)
Issued at 900 AM MDT Wed Sep 08 2021 000 WTPZ35 KNHC 081439 TCPEP5 BULLETIN Tropical Storm Olaf Advisory Number 4 NWS National Hurricane Center Miami FL EP152021 900 AM MDT Wed Sep 08 2021 ...DEPRESSION STRENGTHENS INTO TROPICAL STORM OLAF... SUMMARY OF 900 AM MDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...18.9N 107.5W ABOUT 210 MI...335 KM W OF MANZANILLO MEXICO ABOUT 315 MI...510 KM SSE OF CABO SAN LUCAS MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * Baja California Sur Mexico from Los Barriles to Santa Fe A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere in Baja California Sur should monitor the progress of this system. Additional watches or warnings may be required later today. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 900 AM MDT (1500 UTC), the center of Tropical Storm Olaf was located near latitude 18.9 North, longitude 107.5 West. Olaf is moving toward the northwest near 7 mph (11 km/h). This general motion along with an increase in forward speed are expected through Friday. A turn toward the west-northwest is forecast by Friday night, followed by a turn toward the west on Saturday. On the forecast track, the center of Olaf will move just to the southwest of southern Baja California Sur on Thursday and Friday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Some strengthening is forecast during the next day or so, and Olaf could be near hurricane strength by late Thursday. The storm is expected to begin weakening on Friday. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Olaf can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDEP5 and WMO header WTPZ45 KNHC and on the web at hurricanes.gov/graphics_ep5.shtml?key_messages WIND: Tropical storm conditions are possible in the watch area in Baja California Sur by late Thursday or Thursday night. RAINFALL: Olaf is expected to produce total rainfall amounts of 1 to 3 inches with maximum amounts of 5 inches across the southern portions of Baja California Sur Thursday through Friday. This rainfall may trigger flash flooding and mudslides. SURF: Olaf is expected to generate swells that will affect portions of the coasts of Baja California Sur and Sinaloa by Thursday, spreading northward along the west coast of Baja California Sur through Friday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 1200 PM MDT. Next complete advisory at 300 PM MDT. $$ Forecaster Latto
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Tropical Storm Olaf Wind Speed Probabilities Number 4
2021-09-08 16:39:37| National Hurricane Center (East Pacific)
Issued at 1500 UTC WED SEP 08 2021 000 FOPZ15 KNHC 081439 PWSEP5 TROPICAL STORM OLAF WIND SPEED PROBABILITIES NUMBER 4 NWS NATIONAL HURRICANE CENTER MIAMI FL EP152021 1500 UTC WED SEP 08 2021 AT 1500Z THE CENTER OF TROPICAL STORM OLAF WAS LOCATED NEAR LATITUDE 18.9 NORTH...LONGITUDE 107.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 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 12Z WED 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 12Z WED 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN PERIODS TO TO TO TO TO TO TO 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN 12Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT CABO SAN LUCAS 34 X 1( 1) 23(24) 8(32) 1(33) X(33) X(33) CABO SAN LUCAS 50 X X( X) 4( 4) 2( 6) X( 6) X( 6) X( 6) CABO SAN LUCAS 64 X X( X) 1( 1) 1( 2) X( 2) X( 2) X( 2) SAN JOSE CABO 34 X 1( 1) 15(16) 6(22) 1(23) X(23) X(23) SAN JOSE CABO 50 X X( X) 2( 2) 1( 3) X( 3) X( 3) X( 3) LA PAZ 34 X X( X) 1( 1) 4( 5) X( 5) X( 5) X( 5) ISLAS MARIAS 34 X 1( 1) 2( 3) X( 3) X( 3) X( 3) X( 3) MAZATLAN 34 X 1( 1) 1( 2) 1( 3) X( 3) X( 3) X( 3) 20N 110W 34 X 11(11) 12(23) 1(24) X(24) X(24) X(24) 20N 110W 50 X 2( 2) 3( 5) X( 5) X( 5) X( 5) X( 5) 20N 110W 64 X X( X) 1( 1) X( 1) X( 1) X( 1) X( 1) ISLA SOCORRO 34 X 1( 1) 3( 4) X( 4) 1( 5) X( 5) X( 5) 20N 115W 34 X X( X) 1( 1) 1( 2) 1( 3) X( 3) 1( 4) 25N 115W 34 X X( X) X( X) 2( 2) 7( 9) 2(11) X(11) $$ FORECASTER LATTO
Tropical Storm Larry Graphics
2021-09-01 22:38:43| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Wed, 01 Sep 2021 20:38:43 GMT Wind Speed Probabilities last updated Wed, 01 Sep 2021 20:38:43 GMT
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Tropical Storm Larry Forecast Discussion Number 5
2021-09-01 22:35:59| National Hurricane Center (Atlantic)
Issued at 800 PM CVT Wed Sep 01 2021 000 WTNT42 KNHC 012035 TCDAT2 Tropical Storm Larry Discussion Number 5 NWS National Hurricane Center Miami FL AL122021 800 PM CVT Wed Sep 01 2021 Afternoon satellite imagery indicates that Larry continues to become better organized, with visible imagery hinting at eye formation and a partial SSM/IS overpass suggesting that a 37 GHz convective ring is present around the center. Satellite intensity estimates are now 65 kt from SAB and 55 kt from TAFB, and the initial intensity is increased to 60 kt, which is a 30 kt increase since this time yesterday satisfying the 24-h definition of rapid intensification. The initial motion is now 275/19 kt. Larry is expected to move around the south and southwest sides of a subtropical ridge during the next five days, with a general westward motion for 24-36 h, followed by a turn toward the west-northwest and, by 96-120 h, a turn toward the northwest. The spread in the track guidance after 36 h has decreased a little in the latest model runs. However, the guidance envelope has again shifted a little to the west. The new forecast track will also be shifted a little westward, and it lies on the southern edge of the various consensus models. Conditions appear favorable for additional rapid intensification during at the next 36-48 h, and the intensity forecast now calls for Larry to become a hurricane in less than 12 h and become a major hurricane in about 48 h. Given current trends, this part of the intensity forecast could be conservative. There is lower confidence in the intensity forecast after 48 h. Larry is expected to encounter somewhat increased shear, and around the 72 h point it is expected to encounter some dry air. After 96 h, moderate shear is forecast to continue, but the cyclone is expected to move into a more moist air mass and over increasing sea surface temperatures. On top of these factors, there is the good chance that Larry will have fluctuations in intensity after it becomes a major hurricane due to eyewall replacement cycles. The intensity guidance basically keeps a steady intensity from 60-120 h, and the official forecast follows that trend. However, this part of the intensity forecast is in the middle of the guidance, and it is possible Larry could be stronger than forecast during this time. FORECAST POSITIONS AND MAX WINDS INIT 01/2100Z 12.5N 29.4W 60 KT 70 MPH 12H 02/0600Z 12.6N 31.8W 70 KT 80 MPH 24H 02/1800Z 13.0N 34.9W 85 KT 100 MPH 36H 03/0600Z 13.7N 38.0W 95 KT 110 MPH 48H 03/1800Z 14.6N 40.9W 100 KT 115 MPH 60H 04/0600Z 15.6N 43.5W 105 KT 120 MPH 72H 04/1800Z 16.9N 46.2W 105 KT 120 MPH 96H 05/1800Z 19.5N 50.5W 105 KT 120 MPH 120H 06/1800Z 22.5N 54.0W 105 KT 120 MPH $$ Forecaster Beven
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