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Weather forecasts and information for all of Loudoun County, Virginia. Including Leesburg, Aldie, Waterford, Ashburn, Sterling, Dulles, Hamilton, Purcellville, South Riding. Loudoun Weather is your source for Loudoun County weather forecasts, weather radar and more.

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Author: admin

Updates for Loudoun Weather 9/6/2023

Posted on September 6, 2023September 6, 2023 By admin No Comments on Updates for Loudoun Weather 9/6/2023
9/6/2023 – Slight Risk update for storms tomorrow. Afternoon update. We will still be hot the next 2 days, but a little less hot. Humidity will be higher so it will offset the less heat. This also will bring the possibility of strong to severe storms. This does not look like a widespread storm event, so we are back to the idea that some may get some good rain, but their close-by neighbors may not! Since there is a lot of energy in all this heat if a storm does form, some heavy downpours and downdrafts could cause some severe winds. These downbursts can be very destructive locally so it will just be something to watch, but very hard to predict.

We have to hope for rain!

I got up to 97.7 degrees out here southwest of Purcellville today. Temps did hit 99 and may have briefly hit 100 at Dulles Airport! We will have to see as that would be the first 100 in September for that station.

Hurricane Lee has formed in the Atlantic and should become an Extreme Category 4 Hurricane by Saturday. Of note, I am watching a lot of features over the next several days, and we will not have a great read on the future track of Lee until Sunday. I am looking for signs around that time if there are hints at any impacts or possible threats along the east coast. There IS a chance of it getting closer than I first thought based on a few factors, but anything that far off is just speculation. It will be a beast of a storm! I currently feel less than a 10% chance of it hitting the East Coast.

Attached is the updated Slight Risk for Severe Storms at this time.

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Loudoun County Weather Outlook for Wednesday, September 6, 2023

Posted on September 6, 2023September 6, 2023 By admin No Comments on Loudoun County Weather Outlook for Wednesday, September 6, 2023
Super HOT TODAY! Strong Storms are possible tomorrow and Friday. 
We could hit 100 as we are on track based on the time of day and current temperature near 90 at 11am.
* Today – Hi 99  Lo 71 
* Thursday – Hi 95  Lo 68 – 50% Chance Storms – some strong possible
* Friday – Hi 89  Lo 66 – 60% Showers & Storms – some strong possible
* Saturday – Hi 85  Lo 66 – 70% Chance of showers and storms
* Sunday – Hi 80  Lo 66 – 50% chance of showers
* Monday – Hi 83  Lo 62 – Nice! 
* Tuesday – Hi 82  Lo 60 – 30% chance of showers 
The amount of rain we get over the next 7 days is not certain. There were some drier trends on the models yesterday, but it seems we could see between 1 and 2 inches of rain, but thunderstorms could help locally. 
The trend in the longer range is better for rain chances and below-normal precipitation!
Attached
* Precip the next seven days
* Storm Prediction Center Storm Outlooks for Tomorrow and Friday
* Long Range temperatures for the 6 to 10 and 8 to 14-day periods
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Loudoun County Weather Outlook for Tuesday, September 5, 2023

Posted on September 5, 2023September 5, 2023 By admin No Comments on Loudoun County Weather Outlook for Tuesday, September 5, 2023
It will be hot today, tomorrow, and Thursday (though less so on Thursday). There is now some outlook for stronger storms on Thursday — The map is for Thursday!

We need rain. We really need it!

We MAY (and I want to re-emphasize MAY) see up to an inch, with some local spots seeing more if thunderstorms occur.

We can hope!

So far, my high here in my backyard is up to 95 degrees. Yesterday was the hottest of the year for me at 98.

The rain outlook for the next seven days is also posted.

Are cooler times coming? Models continue to hint at that, so the last graphic is the outlook for the 8 to 14-day period. They also point to multiple chances of some fronts passing through. I am still hoping for a fall-like storm to form along one of the fronts to give us some good rains.

As a reminder, check out https://Explorefall.com . They are noting that the dry conditions and stress on the trees are likely a problem for a good fall foliage season. Last year was absolutely stunning!

The last map is their map noting the tree stress. See the post on X (formerly twitter) and follow them there – https://twitter.com/ExploreFall/status/1699034566651195489?s=20

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8/31/2023 – Drought Emergency and Drought Watches Hot week ahead!

Posted on August 31, 2023August 31, 2023 By admin No Comments on 8/31/2023 – Drought Emergency and Drought Watches Hot week ahead!
As expected, we have been put into a Severe Drought out in Western Loudoun and further west. A moderate drought for most of the rest of the area. 
We also have a drought emergency for the groundwater levels. 
So we are under a drought watch, but it could be an emergency soon!
The forecast is only getting worse for next week! 
* Thursday – Hi 78  Lo 51 
* Friday – Hi 82  Lo 53 
* Saturday – Hi 87  Lo 60  
* Sunday – Hi 95  Lo 68 
* Monday – Hi 98  Lo 68 
* Tuesday – Hi 98  Lo 69 
* Wednesday – Hi 96  Lo 68
Not a drop of rain the entire time! I would not be surprised at a few 100-degree temperatures next week! 
UGLY!! Wow! 
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8/28/2023 – Drought Worsening

Posted on August 28, 2023August 28, 2023 By admin No Comments on 8/28/2023 – Drought Worsening
We will likely see some rain in the next 24 to 26 hours, then turn dry again! The drought remains and seems to worsen before we can improve it. 
Here is the 7-day forecast for rain in the region. Yes, Loudoun is the driest look in the area. This is not good for planting grass (which is usually good in fall), and local water concerns will rise. It is time to consider water conservation until we get some good rains. 
The long-range shows a return to above-normal temperatures (90s) and below-normal precipitation. 
Once we get some stronger cool fronts and contrasting systems this fall, I expect some good rain totals, but we are again on the cusp of showing severe drought in some locations for the next few weeks.
I've attached the 7-day precipitation prediction by the Weather Prediction Center. This is more generous than some of the forecast models. 
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