Tropical Storm Isaias Wind And Rain Timeline Sliders

Tuesday August 4 at 8AM

This morning our region is under a Tropical Storm Warning, Tornado Watch and Flash Flood Watch. Some of these events have begun to impact some areas with localized Tornado Warnings.   If you don’t have much wind yet, you will shortly. The forward speed of the storm is moving faster, now at 33 mph to the North Northeast.  So the worst conditions will be expected now through noon, then improve as the center of Isaias passes north.

Radar Snapshot

Please note that multiple Tornado Warnings continue to be issue. This is a quickly changing situation and they may only spin up for a few minutes, and can be in any part of the Watch area.

This post is a follow up to my morning forecast to include hourly timeline sliders for wind and and rain according the the rapid updates HRRR Model.

Here is the short term forecast update. See the latest NHC Analysis of TS Isaias below.

 

Radar Loop

 

Radar Simulation Timeline —> slider

The worst will be moving out around noon. There may be one more shower during the afternoon.

 

Wind Analysis 

This looks like the center is just east of Richmond, VA

 

Wind Speed Forecast Timeline —> slider

This is for the 1 minute average wind. Gusts will be higher

 

Tropical Storm Isaias 8 AM Update

Satellite Loop

 

SUMMARY OF 800 AM EDT…1200 UTC…INFORMATION

• LOCATION…37.7N 76.8W
• ABOUT 15 MI…20 KM SSE OF TAPPAHANNOCK VIRGINIA
• MAXIMUM SUSTAINED WINDS…70 MPH…110 KM/H
• PRESENT MOVEMENT…NNE OR 25 DEGREES AT 33 MPH…54 KM/H
• MINIMUM CENTRAL PRESSURE…993 MB…29.33 INCHES

 

 

Forecast Track

The faster forward speed gets in in and out sooner.

 

See the Full Morning Update:

Tropical Storm Warning

This area should have a period of sustained winds over 39 mph. See the gusts below

 

Tornado Watch

Small EF-0 and EF-1 tornados are coming with tropical systems. These will likely be rain wrapped and hidden, but locally can push winds close to 100 mph in their path.

⚠️When rotations is spotted on Doppler Radar, a WARNING will be issued for that area.

 

Also See:

Click here for : Tropical Storm Isaias Tracking Page