The Mid-Atlantic states have been in a period of cooler weather since the beginning of March. While April did have a few warm days, the warmer temperatures did not last and sunk back into the 50’s and even 40’s. This week, however, temperatures are expected to near 90ºF by Thursday. While Sunday will be the coolest day, the forecasted high temperatures will continue to rise until after Friday. The weekend is expected to be nice with temperatures hanging in the 70’s. To put this into perspective, the average temperature for the month of April is 70ºF while the average temperature for the month of May is 78ºF.
A low pressure that is currently sitting over the New England states is the culprit for bringing the cooler temperatures and windy conditions to the Mid-Atlantic states on Sunday. The low pressure is expected to move off of the coast by tonight which will allow the warmer temperatures from a high pressure (that will be centered to the southeast of the region). High pressures rotate clockwise in the Northern Hemisphere, so this high pressure will grab ahold of the warmer temperatures near the Gulf of Mexico and push them northward into the region. This same system will also be the culprit of severe weather in the Midwest.
The lack of rain coupled with low humidity will serve as the ingredients for fire weather. Even though some areas received two to four inches with the past two weeks worth of storms, the wind has dried much of the area out. Winds can also play a factor as they can help spread the fire faster. The next chance of showers will be on Friday lasting through at least Sunday.
Even though temperatures are expected to reach into the upper 80’s this week, the Mid-Atlantic states still need to get through Sunday night. The winds should diminish, and the clouds should clear, making conditions conducive for dew or frost. Because temperatures will drop into the 30’s, frost will be the likely visitor. For anyone who has already started their garden, make sure you either bring them in, or cover them so the frost won’t kill them.
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ⓒ 2018 Meteorologist Brandie Cantrell
DISCUSSION: Over the past 24 to 48 hours, there has been an abundance of interesting weather events unfolding across the nation as we enter the first week of April 2018. One such example of this interesting weather was a strong cold front moving southward quickly across the south-central Plains region of the United States. This particular cold front was caught "in the flesh" by way of the NOAA GOES-16 satellite imager in incredible resolution. Attached above is a neat video which contains animated low-level water vapor satellite imagery which captures the fluid movement of the cold front in incredibly high-resolution. Note how in the low-level water vapor satellite imagery shown above, you can even detect the presence of subtle cloud-based ripples and undulations in light of the approaching cold front. This is not all that uncommon with quickly-approaching cold fronts based on the fact that Spring-time cold fronts often pack quite a punch and bring a substantially strong return flow.
Thus, when there is a strong return flow with the passage of a Spring-time cold front, there is often quite a show to be seen and the NOAA GOES-16 satellite imager is now allowing us to see this motion at a higher resolution than ever before. It is remarkable to view such high resolution satellite imagery since it allows atmospheric scientists to project corresponding initiation of frontal precipitation development as well as initiation of deeper, convective storms in some cases as well. Hence, it is very useful for weather forecasters to use such information for the advantage of improving the quality and accuracy of current and future weather forecasting.
To learn more about other high-impact weather events occurring across North America, be sure to click here!
© 2018 Meteorologist Jordan Rabinowitz