Showing posts with label cold. Show all posts
Showing posts with label cold. Show all posts

Wednesday, December 14, 2016

Northwest Florida Weather (12-14-2016) - All Aboard the Roller Coaster!

Living in Northwest Florida, the wintertime is a roller coaster ride when it comes to the weather. Some days, it's warm enough to go to the beach. Others are days where you'd rather stay in bed with multiple blankets. Unfortunately, the next seven days feature days to satisfy both the beach days and the bed days (probably not all that great for colds either). However, a single seven-day forecast (or, in my case, two seven-day forecasts since I do both inland and coastal seven-days) just doesn't show you all the detail. They could, but they quickly become crowded. Thankfully, I am not having to include wintry precipitation in our forecast, so that makes my life (and your life) much easier. Below, I will show each of the seven days and give you a brief discussion about the forecast.

THURSDAY:

Thursday will feature colder temperatures than we have seen lately. We've been well into the 70s and even near 80 for a few days now, so 50s and 60s will be a shock to the system. Keep in mind, this is about 5 degrees below normal for this time of year. It will be a bit breezy, too, so that will make it feel a bit colder. At least it will be sunny, right?

Thursday night will be cold. Lows will be near freezing, and even below in some spots (I'm looking at you, Crestview). Coastal areas will escape the coldest temperatures, but will still be near 40. Clear skies, and winds will be calming down.

FRIDAY:

Friday is a day of change. Just as quickly as we went down, we go right back up. A few clouds will dot the sky on Friday, gradually increasing into the nighttime hours. Notice that the winds have shifted to out of the southeast, now, which helps bring in warmer temperatures. Highs on Friday will be near to slightly above normal with temperatures in the mid 60s.

The southeasterly wind will continue to bring in warmer temperatures through the night. We fall to our lows early in the night on Friday, so those upper 50s and lower 60s may occur closer to midnight, then gradually increase to the upper 60s/near 70 by Saturday morning. Clouds will increase through the night as well.

SATURDAY:

Saturday will be the warmest day in the forecast, with temperatures approaching record levels. The record high for Pensacola (the official climate reporting station in Northwest Florida) is 78. We'll be close, and we could even hit 80 in some inland areas, especially if a bit more sunshine pokes through the clouds. This is one of those days that could be a good beach day, barring the fact that the rip current risk will likely be moderate to high and water temperatures in the 60s. Skies will remain generally cloudy during the day, and winds will also pick up. There is only a 20% chance of a shower during the day.

Saturday night, rain chances increase ever so slightly, especially the farther west you are (areas such as Pensacola, Century, Jay, and Milton). Very warm overnight lows are expected with temperatures in the mid to upper 60s. Now, here is an interesting fact: those overnight lows are above the normal high for this time of year.

SUNDAY:

Sunday is yet another day of change. Rain and thunderstorms look likely. Right now, it's too early to give specifics on a severe weather threat, but we will have to continue monitoring. We will know more once we get closer to Sunday. However, the cold front is expected to pass through during the day, hence the winds shifting from southwest to north. The further west you are, the more likely your temperatures will fall during the afternoon. If you are further east, your temperatures will fall quite a bit during the evening as the cold front moves through. Either way, the highs marked here are averages for the area. The further west you are, highs may be in the upper 60s/lower 70s. The further east you are, highs may be in the mid to upper 70s.

For Sunday night, thunderstorms will end during the evening, but we could still have showers overnight. Lows will be nearly 20 degrees cooler than Saturday night with temperatures in the upper 40s to lower 50s. Winds will be rather breezy, ushering in the colder air.

MONDAY through WEDNESDAY:



The early part of next week is generally constant as far as weather goes. There is still a good chance of rain on Monday as leftover moisture just lingers over the area. It will be much cooler, so this is a day that you would want to stay in bed. Basically, it will truly feel like a Monday. Highs will only manage the mid to upper 50s. Rain chances gradually decrease Tuesday and Wednesday as temperatures start to warm back up. Highs by Wednesday will be in the mid 60s and lows will be in the 50s. Winds on Wednesday night will shift back out of the southeast ahead of potentially another system, but that's too far out to even think about speculating.


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Tuesday, November 15, 2016

NW FL Weather (11/15/2016) - Sunny & Dry, But Turning Cooler


The forecast sounds like a broken record: sunny and dry. Drought conditions continue across Northwest Florida. In fact, much of Northwest Florida is under a "Moderate Drought" (except for a small sliver of northern Santa Rosa County where there is a "Severe Drought").

Current Drought Monitor for the State of Florida. Map courtesy of the National Drought Mitigation Center (NDMC), U.S. Department of Agriculture (USDA), and the National Oceanic and Atmospheric Administration (NOAA)
This map will be updated on Thursday. Without any rainfall in the next 7 days, our drought will continue to gradually worsen. The drought is taking a serious toll on soil moisture. Here is the Keetch-Byram Drought Index for Northwest Florida.

Current Keetch-Byram Drought Index from the Florida Forest Service. Used Blackwater and Chipola Forest District maps.
The Keetch-Byram Drought Index (KBDI) measures the amount of water in the top 32" of soil. It is assumed that the maximum amount of water in that top layer of soil is 8" of water. The index goes from 0 (absolutely wet) to 800 (absolutely dry). So, Okaloosa County is currently the driest county on average according to this index with a value of 666. This means that there is 6.66" of water missing from the soil. Unfortunately, with the dry soil, this helps provide fuel for wildfires.

Without rain in our forecast, we focus purely on the temperatures. As the cold front moves through Saturday morning, it will not bring a substantial rain chance (right now, less than 10%). But, the front does bring cooler, drier air.

Animation of the 18Z (12 PM CST) run of the GFS model showing mean sea-level pressure (black solid lines), 1000-500 mb thickness (red and blue dashed lines), and 6-hr. precipitation accumulation (shaded). Fronts drawn in by me.
The cold front will move through Northwest Florida on Saturday morning. Temperatures will be warmer the further east you are, but will fall once the front passes. Here are your 7-day forecasts for inland and coastal regions (updated since video above):



The National Weather Service in Mobile does note that Frost and/or Freeze Warnings may be required by Sunday night. Several areas could see their first frost and first freeze of the season. Interestingly, Crestview has already had their first freeze of this season (November 11):


So, prepare for more dry weather. Cooler weather will make its way back down to the Gulf Coast by this weekend and early next week.