Sunday, September 30, 2018

First measurable rain since May to follow Rosa into California

By Kristina Pydynowski, AccuWeather senior meteorologist
September 30, 2018, 2:47:49 PM EDT




While most of California will miss out on Rosa's soaking, a storm on its heels will bring the first measurable rain since May to San Francisco, Los Angeles and other cities Tuesday into Wednesday.
In California, the rain and flood risk associated with Rosa is expected to remain confined to the state’s southeastern corner early this week.
Rough seas stirred up by Rosa will still continue to plague Southern California through Monday. Rip currents can endanger surfers or anyone who attempts to enter the water, and minor coastal flooding may occur at high tide.
Rough surf Sep 30

Residents, including fishermen, who climb onto jetties or rock walls will be at risk of being knocked down and swept into the ocean when sneaker waves (random larger waves) overtop these barriers.
The communities missing out on Rosa's rain will not have to wait too much longer for the typical dry spell that unfolds each summer to end.
A new storm sweeping in from the Pacific Ocean is anticipated to spread rain over Northern and central California on Tuesday before dropping into Southern California at midweek.
SW Monday Sep 30

The heaviest rainfall is expected along the coast from around San Francisco to Santa Maria and Los Angeles, where the potential exists for 0.50 of an inch to 1 inch of rain. Similar amounts may be registered along the southwestern slopes of the Sierra Nevada.
There can be locally higher totals, mainly in the southwest- and south-facing coastal mountain ranges.
"Any snow will be restricted to the highest peaks and ridges of the Sierra Nevada," according to AccuWeather Senior Meteorologist Alex Sosnowski.
Download the free AccuWeather app to know when rain will reach your community.
"This would be the first measurable rain since May 21 for Downtown Los Angeles and May 25 for San Francisco," according to AccuWeather Meteorologist Maggie Samuhel. "Farther inland, Fresno has not received measurable rain since mid-April."
While the rain would be a welcome sight to residents to help water lawns and quell the fire danger, some issues may arise.
The first significant rainfall of autumn in California is notorious for causing slippery roads as the rain mixes with oil residue left behind during the dry months.
Motorists are urged to use caution as the rain initially falls. This includes those planning to travel on stretches of interstates 5, 10 and 15. Air travel may also have some disruptions.
SW rain Sep 30

If the rain pours down heavily enough, localized flash flooding and debris flows can occur in the burn scar areas.
Thunderstorms may also accompany the rain across Southern California. Remember that as soon as thunder is heard, the risk of being struck by lightning is present.
The rain will bring another press of cooler air into California. Highs across the Central Valley and coastal plain should be held to the 70s Tuesday into Wednesday. Temperatures in San Francisco and some other beaches may even stop short to reaching 70 F.
Fresno has not had a day with a high in the 70s since mid-June. Most of last week was dominated by highs in the middle to upper 90s.
Later Wednesday into Thursday, the storm is expected to spread showers and a few thunderstorms across the Rockies. Where the ground is left oversaturated in the wake of Rosa, localized flash flooding may occur.
When this storm departs California, a resurgence of heat is not anticipated. The weather pattern may instead keep temperatures near to below normal into the upcoming weekend.
The upcoming pattern will mean AccuWeather meteorologists will have to closely monitor the East Pacific for any more tropical impacts on the Southwest.
"There is the chance of strengthening Sergio being drawn up to the Southwest states with rain during the second week of October," according to AccuWeather Long-Range Meteorologist Jack Boston.
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Indonesia: Death toll may climb well above 800 after destructive earthquake, tsunami

By Faith Eherts, AccuWeather meteorologist
September 30, 2018, 12:03:05 PM EDT




Over 830 people have died after a powerful 7.5 magnitude earthquake rocked the Indonesian island of Sulawesi on Friday and triggered a destructive tsunami.
Nearly all of the deaths have been in the city of Palu, according to the Associated Press (AP). The city is home to more than 380,000 people. A mass burial was scheduled for Sunday due to health reasons.
Officials fear that the death toll will continue to climb significantly higher as crews sift through the rubble.
A passing shower or thunderstorm can briefly interfere with rescue and recovery efforts daily into midweek. Most of the time, however, will be dry with times of clouds and sunshine and high temperatures near 32 C (90 F).
dmco earthquake 9/28

Cries for help have been heard throughout Palu as people remain trapped under collapsed buildings.
The earthquake was initially measured at a magnitude of 7.5 by the United States Geological Survey (USGS). About 10 minutes later, another quake struck the area, this one registering as a magnitude of 5.8.
A spokesperson for Indonesia's Meteorology, Climatology and Geophysics Agency (BMKG) confirmed that a tsunami occurred along a shoreline of Palu after the earthquake.
Houses were reportedly swept away and families are reported missing following the tsunami, according to the Associated Press. The 3-meter (10-foot) -tall tsunami impacted at least two cities, disrupting communication and power to the area.
A beach festival was ongoing in Palu, the capital of Central Sulawesi province, when the tsunami hit, the AP reported.
An official with Akris, the local disaster agency, said that many houses collapsed due to the powerful evening earthquake.
Indonesia earthquake AP
A department store building is seen heavily damaged by earthquake in Palu, Central Sulawesi, Indonesia, Saturday, Sept. 29, 2018. The powerful earthquake rocked the Indonesian island of Sulawesi on Friday, triggering a 3-meter-tall (10-foot-tall) tsunami that an official said swept away houses in at least two cities. (AP Photo/Rifki)

"It happened while we still have difficulties in collecting data from nine villages affected by the first quake,” he told the AP. “People ran out in panic.”
According to disaster agency spokesman Sutopo Purwo Nugroho, the Donggala area in central Sulawesi Province has sustained significant damage.
Earlier on Friday, a nearby quake with a magnitude 5.0 struck the same area. This event reportedly damaged homes.
The nation has suffered from several powerful earthquakes in recent months, which have killed nearly 500 people and caused widespread damage.
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Rosa to slam into northern Baja California, Mexico, to start October

By Faith Eherts, AccuWeather meteorologist
By Robert Richards, AccuWeather meteorologist
September 30, 2018, 8:17:42 PM EDT



Rosa is expected to batter far northwestern Mexico with gusty winds and flooding rainfall on the first day of October.
Among the communities in the path of Rosa is Mexicali, the region's capital, which normally receives about 7 mm (0.3 of an inch) of rainfall during the entire month of October. The city could be inundated with as much as three times this amount in just one day as Rosa impacts the area early this week.
Rosa is expected to turn northeastward and make landfall along Baja California's Pacific Coast on Monday evening. Due to the cooler waters along its path, Rosa is anticipated to be a tropical storm when it moves onshore.
rosa tropical storm 93018

Coastal conditions will remain hazardous for small craft and swimmers. Anyone vacationing in a coastal community should pay attention to local officials and avoid going in the water.
Rosa will further lose wind intensity as it moves inland and interacts with the region's steep terrain.
Regardless, flooding rainfall will continue to be a threat as the system moves through northern Baja California and into the American Southwest.
Mountainous areas will be subject to flash flooding and mudslides, where over 100 mm (4 inches) of rainfall could fall Monday and Monday night.
Rosa Mexico Sep 30

More significant travel disruptions can occur south of Ensenada to Rosarito. Poor visibility, standing water and washed-out roads could pose a threat to any motorists.
Combined with gusty winds, this weather could lead to downed trees and power lines, power outages and damage to poorly constructed buildings.
Just south of San Diego, the cities of Tijuana and Ensenada are expected to escape the heaviest rainfall; however, showers can still dampen the city.
"Any rain that is enough to wet roads can create slippery conditions as the rain mixes with oil residue left behind during the recent dry months," according to AccuWeather Senior Meteorologist Kristina Pydynowski.
Northwestern Mexico will turn drier on Tuesday as Rosa continues to unload heavy rain on the Southwest states of the U.S.
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Dozens injured, thousands without power as Typhoon Trami lashes Japan

By Eric Leister, AccuWeather senior meteorologist
By Robert Richards, AccuWeather meteorologist
September 30, 2018, 3:15:09 PM EDT



More lives and property will be threatened as Typhoon Trami barrels across mainland Japan with destructive winds, flooding rain and an inundating storm surge through Monday.
"Trami will blast through mainland Japan into Monday," AccuWeather Senior Meteorologist Kristina Pydynowski said.
Trami made landfall near Tanabe City in Wakayama Prefecture on Sunday evening. The strength of the storm at that time was equal to that of a Category 3 hurricane in the Atlantic or eastern Pacific oceans.
Winds gusted to 155 km/h (96 mph) at Shionomisaki along the prefecture's southern coast.
On Saturday, Trami slammed Okinawa and produced wind gusts over 160 km/h (100 mph). Winds gusted to 191 km/h (119 mph) at Naha and 202 km/h (126 mph) at Itokazu.

Strong winds are being blamed for injuring at least 80 people as of Sunday night, according to NHK. Broken glass caused some of the injuries; others were knocked down by the wind.
One person is missing in Miyazaki Prefecture, NHK reported. Police fear that the person fell into an irrigation channel while she was working in a paddy field.
About 200,000 homes have lost power, while 1,200 flights have been canceled.
Homes are reportedly inundated after a river overflowed its banks in a part of Miyazaki city.
Naha Airport on Okinawa was shut down on Saturday. The Kansai International Airport in Osaka is closing its two runways from midday Sunday to early Monday, NHK stated.
Trami is starting to lose wind intensity but remains a danger to residents across central and eastern Japan into Monday.
The storm will race across central and eastern Honshu into Sunday night with flooding rain and damaging winds.
"Storm surge flooding along the southeastern coast of Japan will further threaten lives and property into Sunday night," Pydynowski said.
typhoon impacts Sep 30

The heaviest rain may fall north and west of Tokyo, but winds gusted to 150 km/h (93 mph) at the city's Haneda Airport.
While drier weather will quickly return for Monday, the morning commute and daily routines can still be disrupted due to any damage, littered roads or rail lines or power outages left in the wake of Trami.
9/30 Trami

Hokkaido will be the final stop of Trami in Japan overnight Sunday into Monday, with flooding rain and damaging winds remaining concerns.
Trami is the eighth named storm to strike Japan this year, according to AccuWeather Senior Meteorologist Jason Nicholls. "There are signs that strengthening Typhoon Kong-rey may follow later in the new week."
"Out of the seven storms before Trami, six were typhoons," Nicholls added. "The record for land-falling typhoons in Japan is 10 from 2004."
Since Japan has been battered by numerous tropical systems, along with the historic flooding and deadly heat wave, recovery efforts in the wake of Trami can further put a strain on Japan's disaster recovery budget.
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Warmth to return to north-central US next week in wake of coldest air yet this season

By Renee Duff, AccuWeather meteorologist
September 29, 2018, 7:12:05 PM EDT



Cold air will gradually retreat in the midwestern United States this weekend into next week, but the temperature flip will come at the expense of wet weather.
The coldest air to plunge into the region so far this season swept through at late week, bringing snow to part of the region.
"The Big Horn Mountains of Wyoming and the Black Hills of South Dakota received 4-8 inches of snow from the weather pattern during Thursday night to Friday morning," according to AccuWeather Senior Meteorologist Alex Sosnowski. Additional snow will fall over the northern Rockies on Sunday.
The chill will not have staying power into the first days of October, however, as temperatures are expected to begin a gradual ascent late this weekend into early next week.
“Milder air will move into the area early next week, preceded by a few showers on Sunday and Sunday night,” said AccuWeather Meteorologist Ryan Adamson.
The overall nature of the wet weather should be rather light and spotty to end the weekend. 
Damp North Central 9.29 AM

A steadier rain may evolve Sunday night into Monday from Minnesota and Iowa to Wisconsin and a portion of Michigan. In fact, localized flooding cannot be ruled out along this corridor.
Minneapolis and Madison, Wisconsin, are two of the cities where the Monday morning commute could be slowed by rain and reduced visibility.
While the rain may be a nuisance for a time, it will soon be followed by air warm enough to give heaters a rest and break out the shorts once again in some areas.
“Temperatures will be above average by Wednesday, especially in southern areas, with even northern areas likely to return to near average,” Adamson said.
Static NC Midweek 3 pm

Chicago may crack the 80-degree mark at midweek, while Minneapolis is projected to soar into the 70s after remaining in the 50s this weekend.
While temperatures will soar well into the 80s early in the week, Wednesday may be the hottest day of the week from Wichita, Kansas, to St. Louis, Missouri. These cities have a shot of hitting 90 F at midweek.
Rosa will help to pump the warm air into the nation’s midsection as it tracks northeastward beyond the Southwest.
Some of Rosa’s moisture may eventually reach the northern Plains and Upper Midwest around the middle of next week.
Download the free AccuWeather app to know exactly how warm it will get and which days could be dampened by rain.

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North-central US to face dramatic temperature swings, occasional rain this week

By Renee Duff, AccuWeather meteorologist
September 30, 2018, 3:02:21 PM EDT



A series of systems traversing through the north-central United States will set a temperature roller coaster ride in motion during the first days of October.
The brief cold snap at the end of last week should not have residents storing away summer clothes just yet.
“With the pattern we expect this week across the Plains and Midwest, temperatures will vary greatly from north to south over a relatively short distance,” AccuWeather Senior Meteorologist Mike Doll said.
The pattern will make it necessary to wear a jacket one day and shorts and t-shirts the next.
Umbrellas will also be needed on occasion.
Flooding Sep 30 Midwest

"There will be a few rounds of rain and thunderstorms throughout the week that can cause travel delays and disrupt outdoor activities," Doll said.
The first system to sweep through the region will make for a dreary weather into the start of October across the upper Mississippi Valley and Great Lakes.
Pockets of rain and thunderstorms are expected to set up along a corridor from southern Minnesota and Iowa to Michigan beginning Sunday night and continuing into Monday evening.
Midwest Monday Sep 30

Localized flooding is possible along this corridor, especially since the region has experienced an excess of rainfall over the past two months.
This includes around Madison, Wisconsin, where both the morning and evening commutes could be slowed by wet weather on Monday. Motorists may be forced to detour around some flooded roads.
If enough sunshine breaks out between the downpours, a few heavy and gusty storms cannot be ruled out across eastern Iowa, southern Wisconsin and northern Illinois on Monday afternoon.
As the downpours exit the area and sweep into the Northeast on Tuesday, warmth will be on the rebound across the nation’s midsection.
High temperatures on Wednesday are forecast to be 10-25 degrees Fahrenheit above Monday’s highs in Omaha, Nebraska; Des Moines, Iowa; Madison and Green Bay, Wisconsin; and Minneapolis.
Widespread 70s and 80s are in store across this corridor, which are levels more typical of the end of August and early September.
Midweek Central 9.30 AM

Near-record heat will broil areas to the south, including St. Louis where the mercury may surpass 90 F at midweek.
The midweek warmth will be pulled northward ahead of a second system set to sweep through the northern Plains and Upper Midwest with soaking rain.
A new wave of chilly air will sweep in by Thursday, with highs dropping back into the 40s, 50s and 60s across the north-central states.
Yet another surge of rain with milder air to the south is expected to arrive by the end of the week.
“This wet pattern is not good news for farmers looking to harvest their crops,” Doll said.
“Fields across parts of Iowa, Minnesota and Wisconsin are already too muddy for harvesting and additional rain will cause more delays,” he added.
Download the AccuWeather app to know exactly when rain will arrive in your area.

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Man missing at sea for nearly 2 weeks found alive in life raft off Washington coast

  One of two men missing at sea for nearly two weeks was found alive on Thursday by a Canadian fishing boat in a life raft in Canadian water...