je.st
news
Tag: storm
Tropical Storm Iselle Forecast Discussion Number 5
2020-08-27 16:50:42| National Hurricane Center (East Pacific)
Issued at 800 AM PDT Thu Aug 27 2020 000 WTPZ44 KNHC 271450 TCDEP4 Tropical Storm Iselle Discussion Number 5 NWS National Hurricane Center Miami FL EP142020 800 AM PDT Thu Aug 27 2020 Iselle consists of a rather ragged looking area of deep convection being sheared to the southwest of a partially exposed low-level center. A blend of the latest satellite intensity estimates from TAFB and UW-CIMSS support keeping the initial intensity at 40 kt. Moderate-to-strong easterly to northeasterly vertical wind shear will likely prevent Iselle from strengthening over the next couple of days. After that time, the shear is forecast to relax somewhat. However, the cyclone will then be moving over SSTs of only 26 C and into a more stable atmospheric environment. This should cause the deep convection to gradually dissipate, and the cyclone is expected to weaken this weekend before degenerating into a remnant low early next week. The latest NHC intensity forecast is a blend of the IVCN consensus and SHIPS guidance. Iselle is moving northeastward at 4 kt, embedded in a large monsoon gyre. The steering flow is forecast to become more southerly this weekend inside the gyre, resulting in a more northward motion. As the cyclone breaks north of the gyre, a turn to the northwest then west is anticipated while the system becomes steered by a low- to mid- level ridge to its north. The latest NHC track forecast is little changed from the previous one, and lies in between the HFIP corrected consensus HCCA and the TVCX track consensus. FORECAST POSITIONS AND MAX WINDS INIT 27/1500Z 17.0N 115.8W 40 KT 45 MPH 12H 28/0000Z 17.5N 115.4W 40 KT 45 MPH 24H 28/1200Z 18.2N 115.0W 40 KT 45 MPH 36H 29/0000Z 18.9N 114.6W 40 KT 45 MPH 48H 29/1200Z 19.9N 114.2W 40 KT 45 MPH 60H 30/0000Z 21.2N 114.4W 35 KT 40 MPH 72H 30/1200Z 22.2N 115.3W 30 KT 35 MPH 96H 31/1200Z 22.5N 116.6W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 01/1200Z 22.3N 117.3W 20 KT 25 MPH...POST-TROP/REMNT LOW $$ Forecaster Latto
Tags: number
discussion
storm
tropical
Tropical Storm Iselle Wind Speed Probabilities Number 5
2020-08-27 16:50:42| National Hurricane Center (East Pacific)
Issued at 1500 UTC THU AUG 27 2020 000 FOPZ14 KNHC 271450 PWSEP4 TROPICAL STORM ISELLE WIND SPEED PROBABILITIES NUMBER 5 NWS NATIONAL HURRICANE CENTER MIAMI FL EP142020 1500 UTC THU AUG 27 2020 AT 1500Z THE CENTER OF TROPICAL STORM ISELLE WAS LOCATED NEAR LATITUDE 17.0 NORTH...LONGITUDE 115.8 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 40 KTS...45 MPH...75 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 THU 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 THU 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON PERIODS TO TO TO TO TO TO TO 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON 12Z TUE FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 20N 110W 34 X X( X) 1( 1) 1( 2) 1( 3) X( 3) X( 3) ISLA SOCORRO 34 X 1( 1) 1( 2) 2( 4) 1( 5) X( 5) X( 5) ISLA CLARION 34 7 28(35) 19(54) 4(58) X(58) X(58) X(58) ISLA CLARION 50 X 8( 8) 6(14) 1(15) X(15) X(15) X(15) ISLA CLARION 64 X 1( 1) 2( 3) X( 3) X( 3) X( 3) X( 3) 15N 115W 34 3 1( 4) 1( 5) X( 5) X( 5) X( 5) X( 5) 20N 115W 34 1 5( 6) 11(17) 14(31) 5(36) X(36) X(36) 20N 115W 50 X X( X) 2( 2) 6( 8) 1( 9) 1(10) X(10) 20N 115W 64 X X( X) X( X) 2( 2) X( 2) X( 2) X( 2) 25N 115W 34 X X( X) X( X) X( X) 2( 2) 2( 4) X( 4) 20N 120W 34 X X( X) 1( 1) X( 1) X( 1) 1( 2) 1( 3) $$ FORECASTER LATTO
Tropical Storm Hernan Graphics
2020-08-27 16:50:38| National Hurricane Center (East Pacific)
5-Day Uncertainty Track last updated Thu, 27 Aug 2020 14:50:38 GMT Wind Speed Probabilities last updated Thu, 27 Aug 2020 15:31:28 GMT
Tags: graphics
storm
tropical
hernan
Summary for Tropical Storm Iselle (EP4/EP142020)
2020-08-27 16:50:11| National Hurricane Center (East Pacific)
...ISELLE MOVING SLOWLY NORTHEASTWARD WELL OFFSHORE OF SOUTHWESTERN MEXICO... As of 8:00 AM PDT Thu Aug 27 the center of Iselle was located near 17.0, -115.8 with movement NE at 5 mph. The minimum central pressure was 1001 mb with maximum sustained winds of about 45 mph.
Tags: summary
storm
tropical
tropical storm
Tropical Storm Iselle Public Advisory Number 5
2020-08-27 16:50:11| National Hurricane Center (East Pacific)
Issued at 800 AM PDT Thu Aug 27 2020 000 WTPZ34 KNHC 271450 TCPEP4 BULLETIN Tropical Storm Iselle Advisory Number 5 NWS National Hurricane Center Miami FL EP142020 800 AM PDT Thu Aug 27 2020 ...ISELLE MOVING SLOWLY NORTHEASTWARD WELL OFFSHORE OF SOUTHWESTERN MEXICO... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...17.0N 115.8W ABOUT 560 MI...900 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...NE OR 35 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 AM PDT (1500 UTC), the center of Tropical Storm Iselle was located near latitude 17.0 North, longitude 115.8 West. Iselle is moving toward the northeast near 5 mph (7 km/h), and this motion is expected to continue through Friday. A turn to the north then northwest is forecast to occur on Saturday and Sunday. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Little change in strength is forecast during the next couple of days. Iselle is expected to begin weakening late this weekend. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 200 PM PDT. $$ Forecaster Latto
Tags: number
public
storm
advisory
Sites : [910] [911] [912] [913] [914] [915] [916] [917] [918] [919] [920] [921] [922] [923] [924] [925] [926] [927] [928] [929] next »