Friday June 5 2020

Another round of thunderstorms are expected today. Temperatures will be a little lower and the storms may be less intense. There is still a chance of a few cells turning severe. But the biggest risk will be the slow movement and repeated storms leading to flash flooding.

The ground is already saturated after a record 2.18″ of rain fell at BWI yesterday. This broke the old record of 1.26″ in 1891.

Severe Storm And Flooding Risk Today

Less than 20% of storms may turn severe. This includes winds over 58 mph, large hail over 1″ diameter, or an isolated tornado.

June 5 Severe Storm Outlook

 

Flash Flooding: Rainfall between 1 and 3 inches possible

June 5 Flash Flood Watch

 

Morning Set Up

IR Satellite

That thin line of high clouds to our west will be the focus for storms today. The slow movement is the main concern to produce heavy rain and flooding.

CODNEXLAB-GOES-East-regional-eastcoast-14-12_11Z-20200605_map_-34-1n-10-100

 

Surface Observations

Once again we have a Southeast wind by the Chesapeake Bay. Like yesterday, this can help to enhance storms in metro areas.

June 5 maryland weather observations

Forecast High Temperatures This Afternoon 

June 5 maryland weather high temperatures Friday

 

Radar Simulation (sliders)

Bot the NAM 3Km and HRRR Models shows the first round developing between 2 and 4 PM. They may differ in the follow through. Neither model is perfect. But the similarities show the slow moving cells that will lead to flooding. Also, the rain is likely to last through midnight, with stronger cells reaching the lower eastern shore after midnight.

NAM 3 Km Model —> slider

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HRRR Model —> slider

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Also See: 

Climate Report Today

Record Rainfall set in Baltimore at BWI

See the Weather Observations and Climate Report from this morning for more info about:

June 5 record rainfall

📋Observations yesterday 

🌡 Climate data today

💦 Record rainfall in Baltimore

🗺 Weather Map

☀️ Sunrise and sunset times

🌙 Moon phase

 

Derecho
Tropical Weather
Cristobal is a Tropical Depression, still over land with 35 mph winds. This will return over the Gulf of Mexico and expected to resume Tropical Storm intensity. The forecast track from The National Hurricane Center still has a landfall in Louisiana between Sunday and Monday.
IR Satellite Loop
CODNEXLAB-GOES-East-regional-gulf-14-11_56Z-20200605_map_-33-1n-10-100

National Hurricane Center Forecast
June 5 Tropical Depression Cristobal Forecast
Forecast Animation
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Maryland Trek 7 

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Was Your County Not Included?

I wrote this to explain the NWS forecast zones. In November 2020, Cecil County will be switched to join the rest of central Maryland under NWS Sterling VA Office command.

Click this map for more on the regional forecast zones

 

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Water Spout OR Scud Cloud on videos and photos near Middle River Maryland

 

 

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