Category: Posts EN

Historic Flooding Swamps Brisbane Metro!

Written by Team Morecast

 

A slow-moving tropical low has brought days of torrential rainfall to southeast Queensland, including the Brisbane metro. Indeed, rainfall rates have been increasing today with rates approaching 90 mm/hr in some spots. The result has been the worst flooding in decades with more to come.

 

 

The rain gauge network across southeast QLD has been lighting up with widespread four-day totals of 500-1000 mm. Mt. Glorious has registered the highest total with 1,572 mm, but unfortunately this is far from anomalous. These copious rains have overwhelmed streams and rivers across the region, leading to levels not seen in many years.

 

 

Numerous gauges are reading in the major flood category along the Brisbane River, including downtown Brisbane itself (see tweet videos above and below). Docks, ferry moorings, and even large boats are being destroyed with debris flowing out to sea. Thousands of homes and businesses are under water, prompting widespread evacuations. Roads are inundated across the region and travel has been highly discouraged or prohibited by officials. The city bus service has been stopped entirely for the time being. Forced releases from the Wivenhoe Dam just upstream will only exacerbate the flood crisis in the next 24-48 hours. At least six people have drowned so far in the flooding across the region.

 

 

The low pressure system responsible for the rainfall will slide slowly south of Brisbane later tonight, allowing the rains to ease. A significant flooding threat will follow the low into northeast New South Wales through Monday. Lead photo courtesy Mikeymoocow.

Powerful Snowstorm Buries Coastal Northeast!

Written by Team Morecast

 

A rapidly intensifying coastal low brought damaging winds, punishing waves, and crippling snows to portions of the Mid-Atlantic and Northeast. The storm shut down some of the busiest airports in the world while road travel ground to a halt. The weight of snow and high winds brought down numerous powerlines and tree branches. Though the snow has ended and winds are easing, power outages may linger for days.

 

 

The Nor’easter exploded overnight as it passed off the Southeast coast and took energy from the warm Gulf Stream. Heavy snow broke out first along the Jersey shore on Friday evening before spreading into New England overnight. The heaviest snows fell in a stationary band over eastern Long Island and southern New England on Saturday morning and early afternoon. Within this band, snow fell at rates up to four inches per hour (10 cm/hr) and winds gusted 45-60 mph (70-100 kph), leading to near zero visibilities and drifts of several feet. Snowfall totals up to two feet were common within this band with some isolated reports of 30 inches (75 cm). The city of Boston saw 20-24 inch (50-60 cm) totals, including 23.6″ at Logan International Airport, tying the record for snowfall in a calendar day. New York City received 10-12 inches (25-30 cm) and Philadelphia saw around six inches (15 cm).

 

 

 

Strong winds gusted out of the north and northeast upwards of 70 mph (110 kph) along coastal New England. Along shorelines facing north, the winds pushed water up and over dunes and onto roadways. The high winds combined with temperatures in the teens to yield below-zero wind chills, contributing to the dangerous conditions.

Powerful Storm System Brings Wild Weather To End 2021

Written by Team Morecast

 

A frigid Arctic air mass has helped create bitterly cold conditions in the Pacific Northwest for the past week. Periods of snow have accumulated in major cities like Seattle in Portland which rarely see wintry weather. Now, a strong upper trough is moving out of the Southwest, pulling the Arctic chill into the Plains. The clash of warm Gulf moisture and cold Arctic air is leading to unusual and in some areas dangerous weather to close out 2021.

 

 

 

The warm, moist air has dominated the South and East for the past week. It has helped spark a few isolated severe storms, one of which spawned a brief waterspout near Texarkana, Arkansas on Wednesday. The storm produced little in the way of damage and ordinarily wouldn’t have made headlines. However, this waterspout spun across a lake, ingesting not just water but small marine life as well. The result was a rain of fish falling from the sky as the storm wound down (see video tweet above). Some residents reported as many as 30 of the unusual visitors in their yards and roofs. More widespread severe storms, including some tornadic cells, are likely on the first day of 2022, especially from the Mid-South into the Tennessee Valley (see outlook map below).

 

 

Cold air is spilling from the Mountain West into the Plains tonight. Winter storm warnings are in effect from the Central Plains to the Great Lakes. Significant accumulations of ice and snow are expected, leading to treacherous driving conditions over the holiday weekend. However, ahead of the cold front, warm and dry winds swept across the High Plains on Thursday. Gusts as high as 80-115 mph (130-185 kph) were recorded in the foothills near Denver, Colorado. Trees and powerlines were downed across the Front Range, helping to spark roaring wildfires. The fires spread quickly in a densely populated suburban area, resulting in frantic evacuations, although fortunately no casualties have been reported. Despite valiant efforts by firefighters, hundreds of homes and businesses were consumed by the flames before the winds died and the snow started to fall. Lead photo courtesy FEMA.

 

 

Destructive Winds and Tornadoes Race Across the Plains!

Written by Team Morecast

 

An unusually energetic storm system emerged from the Rockies into the Plains on Wednesday, bringing widespread damaging winds to portions of 14 states. Across the High Plains, these high winds picked up tons of dust and debris to create a blinding dust storm. Later in the afternoon, a squall line of severe storms raced from the Plains into the Upper Midwest, bringing destructive gusts to 100 mph (160 kph) and numerous tornadoes.

 

 

 

 

Anticipating the hurricane-force wind storm, officials in many areas preemptively closed schools and government offices. Winds ramped up in the mid-morning over eastern CO and NM. The winds picked up copious dirt and debris, resulting in a dust storm that rolled towards western KS in the early afternoon. Visibilities dropped to near zero within the dust storm. Traffic was brought to a halt (see video above), forcing the closure of Interstate 70. The satellite image shown above shows the vast area affected by the choking dust (ribbons of brown swirling into the bottom side of the circulation). Dust entrained into the system in Colorado has been deposited as far east as Missouri and Iowa.

 

 

 

By mid-afternoon, severe storms boiled up along a squall line from central Kansas into central Nebraska.  This squall line raced quickly east at speeds up to 100 mph (160 kph), faster than the fastest highway traffic. Brief but lightning-fast tornadoes spun up along the line, knocking down trees and barns and flipping semi trucks. Even away from the tornadoes, widespread straight-line wind gusts of 75-100 mph (120-160 kph) have resulted in thousands of power outages. In fact, more reports of gusts exceeding 75 mph were received by the Storm Prediction Center today than any other day on record. Lead photo courtesy Wikipedia contributor Roxy Lopez.