je.st
news
Tag: helene
Hurricane Helene Graphics
2018-09-10 04:39:06| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Mon, 10 Sep 2018 02:39:06 GMT Wind Speed Probabilities last updated Mon, 10 Sep 2018 02:39:06 GMT
Tags: graphics
hurricane
hurricane graphics
graphics hurricane
Summary for Hurricane Helene (AT3/AL082018)
2018-09-10 04:37:50| National Hurricane Center (Atlantic)
...HELENE CONTINUES TO STRENGTHEN OVER THE EASTERN ATLANTIC... As of 11:00 PM AST Sun Sep 9 the center of Helene was located near 13.9, -27.2 with movement WNW at 13 mph. The minimum central pressure was 984 mb with maximum sustained winds of about 85 mph.
Tags: summary
hurricane
helene
Hurricane Helene Public Advisory Number 11
2018-09-10 04:37:50| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Sun Sep 09 2018 952 WTNT33 KNHC 100237 TCPAT3 BULLETIN Hurricane Helene Advisory Number 11 NWS National Hurricane Center Miami FL AL082018 1100 PM AST Sun Sep 09 2018 ...HELENE CONTINUES TO STRENGTHEN OVER THE EASTERN ATLANTIC... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...13.9N 27.2W ABOUT 195 MI...320 KM WSW OF THE SOUTHERNMOST CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Hurricane Helene was located near latitude 13.9 North, longitude 27.2 West. Helene is moving toward the west-northwest near 13 mph (20 km/h) and this motion is expected to continue for another couple of days. A turn to the northwest is forecast to occur on Wednesday. Maximum sustained winds have increased to near 85 mph (140 km/h) with higher gusts. Additional strengthening is expected during the next day or so, but slow weakening should begin by late Tuesday. 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). The estimated minimum central pressure is 984 mb (29.06 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: The outer bands of Helene could produce up to one inch of additional rainfall over the southernmost Cabo Verde Islands during the next few hours. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Cangialosi
Tags: number
public
advisory
hurricane
Hurricane Helene Forecast Discussion Number 11
2018-09-10 04:37:50| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Sun Sep 09 2018 951 WTNT43 KNHC 100237 TCDAT3 Hurricane Helene Discussion Number 11 NWS National Hurricane Center Miami FL AL082018 1100 PM AST Sun Sep 09 2018 Satellite images indicate that Helene continues to strengthen. During the past several hours, a large band of deep convection has completely wrapped around the center resulting in the formation of a large ragged eye. Although there are well-defined outer bands in the southern portion of the circulation, there are a few dry slots just beyond the inner core. The latest Dvorak classifications have increased to 4.5/77 kt from both TAFB and SAB, and therefore, the initial intensity is adjusted upward to 75 kt. Helene is currently in a low wind shear environment and over fairly warm 27-28 deg C SSTs. These conditions are expected to prevail for another 24-36 hours, so additional strengthening seems likely during that period. Beyond that time, however, the environment is expected to gradually become less favorable for Helene with south-southwesterly shear increasing, mid-level humidities falling, and SSTs lowering along the future path. All of these conditions suggest a steady weakening trend beginning in a couple of days, and the NHC intensity forecast follows the trend in the latest model guidance. The hurricane continues to pull away from the Cabo Verde Islands, and the initial motion estimate is 285/11 kt. A continued west-northwest motion at about the same forward speed is expected for about two days while a mid-level ridge remains the primary steering feature. After that time, a significant weakness in the ridge, caused by a cut off deep-layer low pressure system, should promote a northward turn with a gradual increase in forward speed. The models are in relatively good agreement on this scenario, but they differ on when and where Helene makes the turn. The NHC track forecast is adjusted a little to the east at the latter forecast times, but it still favors the left side of the guidance envelope to be near the HCCA model. FORECAST POSITIONS AND MAX WINDS INIT 10/0300Z 13.9N 27.2W 75 KT 85 MPH 12H 10/1200Z 14.4N 29.2W 85 KT 100 MPH 24H 11/0000Z 15.1N 31.8W 90 KT 105 MPH 36H 11/1200Z 15.7N 34.2W 90 KT 105 MPH 48H 12/0000Z 16.4N 36.1W 85 KT 100 MPH 72H 13/0000Z 19.0N 38.7W 70 KT 80 MPH 96H 14/0000Z 23.5N 40.5W 60 KT 70 MPH 120H 15/0000Z 29.6N 41.2W 55 KT 65 MPH $$ Forecaster Cangialosi
Tags: number
discussion
forecast
hurricane
Hurricane Helene Wind Speed Probabilities Number 11
2018-09-10 04:37:50| National Hurricane Center (Atlantic)
Issued at 0300 UTC MON SEP 10 2018 018 FONT13 KNHC 100237 PWSAT3 HURRICANE HELENE WIND SPEED PROBABILITIES NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082018 0300 UTC MON SEP 10 2018 AT 0300Z THE CENTER OF HURRICANE HELENE WAS LOCATED NEAR LATITUDE 13.9 NORTH...LONGITUDE 27.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 75 KTS...85 MPH...140 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 00Z MON 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 00Z MON 12Z MON 00Z TUE 12Z TUE 00Z WED 00Z THU 00Z FRI PERIODS TO TO TO TO TO TO TO 12Z MON 00Z TUE 12Z TUE 00Z WED 00Z THU 00Z FRI 00Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER CANGIALOSI
Tags: number
speed
wind
hurricane
Sites : [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] next »