Weather: Mobile

Hurricane Isaias is forecast to continue strengthening through Friday morning as it moves northeast into the central Gulf. The hurricane will then turn northward and accelerate toward the north central Gulf Coast. Some weakening of the peak winds will likely occur just before landfall as the storm encounters increasing wind shear. However, Isaias is expected to still be a dangerous hurricane at landfall Friday night. It is too early to pinpoint the landfall location. It is important not to focus just on the center as the wind field will expand by landfall, resulting in the potential for significant wind impacts and a life threatening storm surge along and to the east of where the hurricane makes landfall.

WIND: LATEST LOCAL FORECAST

Peak Wind Forecast: 25-35 mph with gusts to 45 mph

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

The wind threat has remained nearly steady from the previous assessment. PLAN: Plan for life-threatening wind of equivalent CAT 1 or 2 hurricane force. PREPARE: Remaining efforts to protect life and property should be urgently completed. Prepare for considerable wind damage. ACT: Move to safe shelter before the wind becomes hazardous.

WIND: POTENTIAL IMPACTS

Considerable roof damage to sturdy buildings, with some having window, door, and garage door failures leading to structural damage. Mobile homes severely damaged, with some destroyed. Damage accentuated by airborne projectiles. Locations may be uninhabitable for weeks. Many large trees snapped or uprooted along with fences and roadway signs blown over. Some roads impassable from large debris, and more within urban or heavily wooded places. Large areas with power and communications outages.

STORM SURGE: LATEST LOCAL FORECAST

-threatening storm surge possible Peak Storm Surge Inundation: The potential for 4-7 feet above ground somewhere within surge prone areas Window of concern: Friday morning until Saturday morning

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

The storm surge threat has remained nearly steady from the previous assessment. PLAN: Plan for life-threatening storm surge flooding of greater than 6 feet above ground. PREPARE: Evacuation efforts should soon be brought to completion before driving conditions become unsafe. ACT: Leave immediately if evacuation orders are given for your area to avoid being cut off from emergency services or needlessly risk lives.

STORM SURGE: POTENTIAL IMPACTS

Large areas of deep inundation affecting areas such as from the Dog River up through the Mobile River and tributaries, including downtown Mobile. Structural damage to buildings, with several washing away. Damage compounded by floating debris. Locations may be uninhabitable for an extended period. Large sections of near-shore escape routes and secondary roads washed out or severely flooded, including the US 90 Causeway. Major damage to marinas, docks, boardwalks, and piers. Many small craft broken away from moorings, especially in unprotected anchorages with some lifted onshore and stranded.

FLOODING RAIN: LATEST LOCAL FORECAST

Peak Rainfall Amounts: 3-6 inches, with locally higher amounts

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

The flooding rain threat has remained nearly steady from the previous assessment. 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.

FLOODING RAIN: POTENTIAL IMPACTS

Major rainfall flooding may prompt many evacuations and rescues. Rivers and tributaries may rapidly overflow their banks in multiple places. Small streams, creeks, canals, and ditches may become dangerous rivers. Flood control systems and barriers may become stressed. Flood waters 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

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

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.

TORNADO: POTENTIAL IMPACTS

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.

Precautionary

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Locations

WHAT...Flash flooding caused by excessive rainfall continues to be possible.

Info1

WHERE...Portions of Alabama, including the following areas, Baldwin Central, Baldwin Coastal, Baldwin Inland, Covington, Escambia, Mobile Central, Mobile Coastal and Mobile Inland and northwest Florida, including the following areas, Escambia Coastal, Escambia Inland, Okaloosa Coastal, Okaloosa Inland, Santa Rosa Coastal and Santa Rosa Inland.

Info2

WHEN...From Friday afternoon through Saturday afternoon.

Info3

IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.

Info4

ADDITIONAL DETAILS... - Hurricane Isaias will move onshore on the northern Gulf coast Friday night, with bands of rain ahead of the storm moving onshore Friday afternoon. From Friday through the weekend, Isaias is expected to produce rainfall amounts of 3 to 7 inches across the central U.S. Gulf Coast extending from far southeastern Louisiana to the Florida Big Bend region. Localized totals up to 15 inches are possible, particularly within banding across the Florida Panhandle. Flash and urban flooding is possible across the region, with considerable impacts possible across much of southern Alabama and the Florida Panhandle.

Location

WHAT...Moderate flooding is forecast.

Info1

WHERE...Bayou Sara at Saraland.

Info2

WHEN...From Saturday morning to Sunday evening.

Info3

IMPACTS...At 4.0 feet, Flooding of streets begin. At 5.0 feet, Street flooding east of the railroad becomes widespread. At 6.0 feet, Flooding of residences in the area will occur.

Info4

ADDITIONAL DETAILS... - At 10:30 AM CDT Thursday the stage was 1.9 feet. - Forecast...The river will oscillate around flood stage with a maximum value of 5.5 feet Saturday evening. - Flood stage is 4.0 feet.

Precautions

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov