Flash Flood Warnings Cover Pennsylvania and Maryland as Typhoon Nears Japan
Multiple flash flood warnings and severe thunderstorm alerts are in effect across parts of the eastern and southwestern United States while Typhoon Chan-hom approaches Japan’s Kanto region.
Active Flash Flood Warnings in Pennsylvania and Maryland
The National Weather Service in Pittsburgh has issued a Flash Flood Warning for eastern Fayette County in southwestern Pennsylvania until 4:45 a.m. EDT. [1] At 1:47 a.m. EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. [1] Between 0.5 and 1 inch of rain has already fallen, with additional rainfall amounts of 1 to 2 inches possible in the warned area. [1] Flash flooding is ongoing or expected to begin shortly. [1] The hazard is flash flooding caused by thunderstorms. [1]
The National Weather Service in Sterling Virginia has issued a Flash Flood Warning for northern Garrett County in western Maryland until 4:15 a.m. EDT. [5] At 1:21 a.m. EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. [5] Between 0.5 and 2 inches of rain have fallen, with an expected rainfall rate of 0.75 to 1.5 inches in 1 hour. [5] Flash flooding is ongoing or expected to begin shortly. [5] The hazard is flash flooding caused by thunderstorms. [5] Radar is the source of the information. [5]
These two warnings highlight the immediate risk of rapidly rising water in low-lying areas of the eastern United States, where thunderstorms have already deposited substantial rainfall totals in short periods. Residents in the affected counties should monitor local updates closely because the combination of ongoing rain rates and saturated ground can lead to sudden inundation of roads and properties.
Flood Warning Issued for Central Ohio Counties
A Flood Warning remains in effect until 5:30 a.m. EDT for portions of northwestern Union County, southeastern Hardin County and northeastern Logan County in Ohio. [3] Flooding caused by excessive rainfall from thunderstorms is expected in these areas. [3] At 1:26 a.m. EDT, radar indicated heavy rain due to thunderstorms. [3] Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. [3] The impacts include water covering roads and fields in the warned counties, which can disrupt travel and damage infrastructure if the rain continues.
The warning covers a multi-county region in central Ohio where the cumulative effect of thunderstorm rainfall has pushed local waterways toward flood stage. Officials emphasize that low-lying and flood-prone locations face the greatest risk, requiring drivers to avoid crossing flooded roadways.
Severe Thunderstorm Warning in Arizona
The National Weather Service in Phoenix has issued a Severe Thunderstorm Warning for southwestern La Paz County in west central Arizona and north central Yuma County in southwestern Arizona until 11:15 p.m. MST. [2] At 10:43 p.m. MST, a severe thunderstorm was located 12 miles northeast of Yuma Proving Ground, or 21 miles northeast of Martinez Lake, moving northwest at 20 mph. [2] The hazard includes 60 mph wind gusts. [2] Radar indicated the storm’s intensity. [2] Expect damage to roofs, siding, and trees. [2]
The storm’s northwest movement at 20 mph means the strongest winds could affect additional locations in the warned counties within the warning period. Property owners are advised to secure outdoor items that could become projectiles in gusty conditions.
Typhoon Chan-hom Nears Japan
Typhoon Chan-hom is approaching Japan’s Kanto region. [4] The approach of this system adds another layer of weather concern across the Pacific, separate from the alerts active in the United States.
Overview of Current Severe Weather Alerts
The separate but concurrent warnings span the eastern and southwestern United States along with the Pacific region near Japan. [1] [2] [3] [4] [5] Flash Flood Warnings cover parts of Pennsylvania and Maryland, a Flood Warning covers portions of Ohio, a Severe Thunderstorm Warning is active in Arizona, and Typhoon Chan-hom continues toward Japan’s Kanto region. [1] [2] [3] [4] [5] Each alert carries specific time limits and hazards tied directly to radar observations or storm movement, underscoring the time-sensitive nature of the information.
These alerts demonstrate how different weather systems can generate simultaneous risks across distant geographic areas, with radar and National Weather Service offices providing localized guidance for each region.
What to watch next: Continued monitoring of the Flash Flood Warning until 4:45 a.m. EDT in Fayette County, Pennsylvania, the Flash Flood Warning until 4:15 a.m. EDT in Garrett County, Maryland, the Flood Warning until 5:30 a.m. EDT in Ohio counties, the Severe Thunderstorm Warning until 11:15 p.m. MST in Arizona, and the approach of Typhoon Chan-hom to Japan’s Kanto region.
