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By David M. Higgins II, Publisher

Maryland- Tropical Storm Isaias is expected to begin affecting the Southern Maryland region around Monday, August 3, 2020, around 5 pm. Tropical Storm Warnings are in effect for Charles, Calvert, and St. Mary’s COunties, along with many others in the State. A Flash Flood Watch is in effect for Southern Maryland from Monday, August 3, 11 pm until Tuesday, August 4 evening. A Coastal Flood Watch is in effect for the area all day Tuesday, August 4 I will continually update this as the NOAA NWS National Hurricane Center outs out new information. Also, be sure to check out our article later that will be reporting road closures. If you do not need to be out, please stay in so the First Responders do not become overloaded with calls. There is sure to be toppled trees, and possibly fire from lightning or toppling electrical lines they will be responding to. If you do have to be out, please do not drive through flooded roadways.

Tropical Storm Warning:

LATEST LOCAL FORECAST: Equivalent Tropical Storm force wind
– Peak Wind Forecast: 45-55 mph with gusts to 70 mph
– Window for Tropical Storm force winds: early Tuesday
morning until Tuesday afternoon

THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY:

Potential for wind 58 to 73 mph – The wind threat has remained nearly steady from the previous assessment.

PLAN: Plan for dangerous wind of equivalent strong tropical storm force.

PREPARE: Remaining efforts to protect life and property should be completed as soon as possible. Prepare for significant wind damage.

ACT: Move to safe shelter before the wind becomes hazardous.

POTENTIAL IMPACTS: Significant

  • Some damage to roofing and siding materials, along with damage to porches, awnings, carports, and sheds. A few buildings experiencing window, door, and garage door failures. Mobile homes damaged, especially if unanchored. Unsecured lightweight objects become dangerous projectiles.
  • Several large trees snapped or uprooted, but with greater numbers in places where trees are shallow-rooted. Several fences and roadway signs blown over.
  • Some roads impassable from large debris, and more within urban or heavily wooded places. A few bridges, causeways, and access routes impassable.
  • Scattered power and communications outages, but more prevalent in areas with above-ground lines.

STORM SURGE

LATEST LOCAL FORECAST: Localized storm surge possible

Peak Storm Surge Inundation: The potential for up to 2 feet above ground somewhere within surge prone areas

Window of concern: early Tuesday morning until Tuesday evening

  • Potential for storm surge flooding greater than 1 foot above ground
  • The storm surge threat has remained nearly steady from the previous assessment.

PLAN: Plan for storm surge flooding greater than 1 foot above ground.

PREPARE: Complete preparations for storm surge flooding, especially in low-lying vulnerable areas, before conditions become unsafe.

ACT: Leave immediately if evacuation orders are given for your area.

POTENTIAL IMPACTS: Limited

  • Localized inundation with storm surge flooding mainly along immediate shorelines and in low-lying spots, or in areas farther inland near where higher surge waters move ashore.
  • Sections of near-shore roads and parking lots become overspread with surge water. Driving conditions dangerous in places where surge water covers the road.
  • Moderate beach erosion. Heavy surf also breaching dunes, mainly in usually vulnerable locations. Strong rip currents.
  • Minor to locally moderate damage to marinas, docks, boardwalks, and piers. A few small craft broken away from moorings.

FLOODING RAIN

LATEST LOCAL FORECAST: Flash Flood Watch is in effect

  • Peak Rainfall Amounts: Additional 4-8 inches, with locally higher amounts

PLAN: Emergency plans should include the potential for major flooding from heavy rain. Evacuations and rescues are likely.

PREPARE: Strongly consider protective actions, especially if you are in an area vulnerable to flooding.

ACT: Heed any flood watches and warnings. Failure to take action will likely result in serious injury or loss of life.

POTENTIAL IMPACTS: Extensive

Major rainfall flooding may prompt many evacuations and rescues.

Rivers and tributaries may rapidly overflow their banks in multiple places. Small streams, creeks, canals, arroyos,
and ditches may become dangerous rivers. In mountain areas, destructive runoff may run quickly down valleys while increasing susceptibility to rockslides and mudslides. Flood control systems and barriers may become stressed.

Floodwaters can enter many structures within multiple communities, some structures becoming uninhabitable or washed away. Many places where flood waters may cover escape routes. Streets and parking lots become rivers of moving water with underpasses submerged. Driving conditions become dangerous. Many road and bridge closures with some weakened or washed out.

TORNADO

LATEST LOCAL FORECAST:

  • Situation is somewhat favorable for tornadoes
  • Potential for a few tornadoes

The tornado threat has remained nearly steady from the previous assessment.

PLAN: Emergency plans should include the potential for a few tornadoes.

PREPARE: If your shelter is particularly vulnerable to tornadoes, prepare to relocate to safe shelter before hazardous weather arrives.

ACT: If a tornado warning is issued, be ready to shelter quickly.

POTENTIAL IMPACTS: Limited

  • The occurrence of isolated tornadoes can hinder the execution of emergency plans during tropical events.
  • A few places may experience tornado damage, along with power and communications disruptions.
  • Locations could realize roofs peeled off buildings, chimneys toppled, mobile homes pushed off foundations or overturned, large tree tops and branches snapped off, shallow-rooted trees knocked over, moving vehicles blown off roads, and small boats pulled from moorings.

David M. Higgins II, Publisher/Editor

David M. Higgins was born in Baltimore and grew up in Southern Maryland. He has had a passion for journalism since high school. After spending many years in the Hospitality Industry he began working in...