Category: Posts EN

Flash Flooding Inundates Ellicott City, Baltimore Area Sunday Afternoon

Written by Meteo Expert Josef Lukas

A persistent area of showers and thunderstorms have brought severe flash flooding to the Baltimore, Maryland suburb of Ellicott City Sunday afternoon.

Thunderstorms developed in the area just after 2 pm local time and became nearly stationary for almost hours dropping 7.47 inches of rain on the town. At one point, 1.30 inches of rain fell in just 15 minutes; a rate of 5.20″ per hour.

The following are a series of tweets containing pictures and videos from people that were in Ellicott City as the flash flooding was occurring.

Tweets from the Ellicott City flash flooding

Myanmar Braces For A High Risk Of Flash Flooding Risk This Week

Written by Meteo Expert Josef Lukas

Rounds of heavy rain and thunderstorms will bring a significant risk of flash flooding to Myanmar this week.

Myanmar Heavy Rain Details

The heaviest of the rain is expected from Monday through Wednesday across the north-central coast of Myanmar.
A high risk for flash flooding will exist which includes impacts such as mudslides, washed-out roads and bridges, as well as an increased likelihood for water contamination.

200-400 mm of rain is likely across central Myanmar, which includes Naypyidaw and Yangon (listed as Rangoon on the maps in this article). Elsewhere, a widespread area of over 100 mm of rain is expected over a 3-day period.

UBIMET meteorologists are tracking a disturbance across the Bay of Bengal that will send tropical moisture from the Indian Ocean northward. This tropical moisture will be the fuel for the heavy thunderstorms.

The heaviest rain risk will diminish on Thursday and Friday, but lingering moisture will still bring a risk for scattered showers and storms into the upcoming weekend.

Alberto Tracks Toward Florida Panhandle

Written by Meteo Expert Josef Lukas

Tropical cyclone Alberto will move across the Gulf of Mexico and make landfall in the Florida Panhandle later on Monday.

Alberto will impact several states across the Southeast, but affect Florida the hardest with damaging winds and widespread heavy rain. Across the Panhandle a storm surge of up to 2-4 feet is expected around the time of landfall.

Details on Alberto

Alberto will track across the warm waters of the Gulf of Mexico through Monday. Environmental conditions will favor some strengthening as the storm tracks toward the Florida Panhandle.

Landfall is expected between Mobile, Alabama and Apalachicola, Florida Monday afternoon or evening. A storm surge of up to 4 feet is expected near and just to the east of Alberto’s center.

The circulation around Alberto is large which means the wind field around the storm is also quite large. Consequently, tropical storm force winds of 39 mph or greater could extend up to 120 nautical miles from the center of Alberto.

 Alberto will also bring an abundance of tropical moisture northward from the Caribbean and Gulf of Mexico. The tropical moisture associated with Alberto will interact with a frontal boundary over the mid-Atlantic to bring a widespread area of heavy rain through Wednesday.

The heaviest rain is expected near and just east of the track of Alberto where 4-8 inches is expected. A second area of heavy rain is expected across southern Florida.

Across the Carolina’s and the mid-Atlantic, the rainfall expected will be due to tropical moisture moving in from the Atlantic Ocean and not directly from Alberto.

The wind risk from Alberto will diminish Tuesday night and Wednesday, but areas of heavy rain could continue across the Ohio Valley into Thursday.

Tropical Disturbance Will Bring More Heavy Rain to the Southeast U.S.

Written by Team Morecast

 

We’re monitoring a tropical disturbance currently hovering over the western Caribbean, just east of the Yucatan Peninsula. It’s part of a train of tropical moisture pumping up into the eastern U.S. Heavier than normal rainfall has been occurring for more than a week and is likely to continue for another week or more. But will there be the added threat of tropical storm development?

 

 

Model guidance is split on how this system will evolve. They agree on the possibility of some tropical development, despite how early we are in the season. In fact the hurricane season doesn’t even start until June 1st. However, a few tropical storms have been known to develop earlier. Some of the models turn the system towards the northwest and the central Gulf; others bring it more northeast towards Florida and the Carolinas.

Regardless of whether or not the system intensifies to tropical depression or storm status, the moisture associated with the system will enhance already heavy rainfall in the southeast. The map below from NOAA’s Weather Prediction Center shows forecast rainfall amounts through the next seven days. You can see the heaviest rainfall amounts of 6-10 inches (150-250 mm) likely to impact coastal zones and the Florida peninsula.