Central Appalachia Weather Authority

Dedicated to protecting lives across Appalachia through storm coverage, weather education, disaster relief, and scientific research.

[Central Appalachia Weather Authority @AppalachiaWx]

Frost Possible Across Portions of The Central Appalachians Overnight!!!

As of Thursday evening, temperatures are rapidly falling across the region. Clear skies, light winds, and dry air is creating an optimal environment for radiational cooling. This will especially be the case in sheltered valleys, where some pockets of frost will be possible by Friday morning. The highlighted area represents the locations where pockets of frost will be possible overnight. Areas that are not highlighted are unlikely to see frost at this time. The National Weather Service has issued Frost Advisories for some counties from eastern West Virginia through northern Pennsylvania.

#PAwx #wvwx #mdwx #NYwx #FrostAdvisory #coldweather

[Central Appalachia Weather Authority @AppalachiaWx]

Frost Possible In The Sheltered Valleys of The Central Appalachians On Friday Morning!!!

Weather Update:

An area of low pressure will develop and intensify off the East Coast late this week. Counterclockwise flow around the strengthening cyclone will help to filter dry Canadian air into the region late this week. After a sunny, cool day on Thursday, a chilly night will unfold across the region. Clear skies, light winds, and low dew points will allow temperatures to drop off quickly after sunset. While widespread frost formation is not expected, some of the colder, sheltered valleys from eastern West Virginia through southern New York will have the potential to see some patchy frost early Friday morning. It is possible that some cloud cover may push into southern New York and northern Pennsylvania overnight, limiting the risk of frost in this area. Otherwise, the risk of isolated frost is expected in the highlighted area.

#PAwx #wvwx #mdwx #NYwx #WeatherUpdate

[Central Appalachia Weather Authority @AppalachiaWx]

Fall-Like Weather Pattern Expected Across The Central Appalachians Through The Weekend!!!

Weather Highlights:

* Fall-Like Weather This Week
* Heavy Rain Possible Through Wednesday
* Sunny days and cool nights Thursday through Sunday
* Frost risk possible, especially in the colder valleys late this week

Weather Update:

The official start to fall begins on Tuesday, and it will certainly feel like fall across the region. A frontal boundary will continue to meander through the region over the next couple of days. This frontal boundary will continue to produce a damp, chilly air mass across our area. A low-pressure system is expected to close off over the Ohio Valley and will provide persistent rain chances across much of the region through mid-week. Conditions will improve late in the week, as the system moves toward the Eastern Seaboard.

Much drier air will filter in behind this system, setting the stage for a beautiful fall weekend. Sunny days and chilly nights can be expected across the region Thursday through Sunday. The dry air and clear nights will likely provide optimal conditions for radiational cooling. It is possible that a frost risk may materialize late this week.

#PAwx #wvwx #ohwx #mdwx #NYwx #fall #fallweather

[Central Appalachia Weather Authority @AppalachiaWx]

Weekend Weather Forecast For The Central Appalachians!!!

Summary:

The weekend will start off on a quiet and comfortable note for much of our region, but a frontal boundary will bring the risk of heavy rainfall and flash flooding from Saturday night into Sunday.

Friday:

A frontal boundary positioned from Central Ohio to northern Pennsylvania will gradually sink southward through the day. This will allow dew points to drop in northern portions of the area by late in the day, while southern regions will likely remain muggy. There will also be the chance for scattered showers or thunderstorms for mainly areas south and east of Pittsburgh this afternoon and evening.

Saturday:

The frontal boundary will stall out form the Midwest to the Mid-Atlantic region Saturday morning before returning northeastward as a warm front on Saturday. This will lead to an increase in dew points during the day, especially for areas south and west of Pittsburgh. Most other areas will experience a dry comfortable day before low-level moisture returns across much of the region Saturday night.

Sunday:

The frontal boundary will once again slow down or stall Sunday across northern Ohio and northern Pennsylvania on Sunday before returning south late in the day. A high amount of atmospheric moisture will be in place along and south of the boundary, setting the stage for the potential of heavy rainfall and flash flooding across the region. While the greatest risk may be in the highlighted area, all locations across our area should remain alert for the possibility of flash flooding.

#pawx #WVWX #ohwx #mdwx #NYwx #heavyrain #flashflooding #weatherforecast

[Central Appalachia Weather Authority @AppalachiaWx]

Dry Air Intrusion Across The Central Appalachians!!!

A push of dry air will occur across much of the Central Appalachian region Friday into Friday night. The frontal boundary responsible for the dry air will begin to push back to the north late in the day on Saturday, bringing the return of moist air for the rest of the weekend.

We will provide a more detailed update on the weekend forecast on Friday morning.

#pawx #ohwx #ohwx #mdwx #NYwx

[Central Appalachia Weather Authority @AppalachiaWx]

Heavy Rain And Flash Flooding Risk For Portions of the Eastern Great Lakes And Central Appalachians Through Tonight!!!

Weather Summary:

After a couple of dry, comfortable days, air and dewpoint temperatures have risen once again across our region. A frontal boundary located across the Great Lakes into the Northeast will remain nearly stationary from this afternoon through the overnight hours, leading to a corridor of enhanced thunderstorm risk along and south of the boundary.

It appears that a corridor from northern Ohio through northern Pennsylvania and southern New York will have the potential to experience heavy rain and flash flooding with thunderstorms that develop this afternoon through tonight. There is a high level of precipitable water content in the atmosphere, which means that storms will be efficient rainfall producers.

While areas further south will have plenty of moisture in place, these areas will not have the lift necessary for thunderstorm development, due to greater distance from the frontal boundary.

#pawx #ohwx #NYwx #flashflooding #heavyrain #weather

[Central Appalachia Weather Authority @AppalachiaWx]

Chilly Night Expected Across the Central Appalachians And Northeast!!!

Summary:

A dry, fall-like air mass that settled into the region on Monday will lead to a chilly night across the region. With light winds and low dew points in place, radiational cooling will allow temperatures to drop quickly after sunset. Many rural areas in Pennsylvania, northeastern West Virginia, western Maryland, and southern New York will see temperatures dip into the 40s by Tuesday morning. It is possible that a few of the typically colder valleys in northern Pennsylvania and southern New York could see lows in the upper 30s; however, frost does not appear to be an issue at this time.

#pawx #WVWX #ohwx #mdwx #NYwx #fallweather

[Central Appalachia Weather Authority @AppalachiaWx]

Why Haven't There Been Any Hurricanes in The Atlantic Yet This Year?

The primary reason why there has been a lack of tropical activity in the Atlantic Basin this season is because of high amounts of wind shear. The wind shear in the Atlantic Basin is particularly strong this season as a result of the strong El Nino that is developing in the equatorial Pacific Ocean. At this point, there have been only five named storms in the Atlantic Basin this season, and none of them have reached hurricane strength.

While most tropical waves that try to develop in the main development region of the Atlantic will struggle to organize, the Eastern U.S. will still need to remain alert for tropical activity that tries to develop in the Gulf, Caribbean, or southwest Atlantic as we enter the fall months. Any tropical activity that develops in this area will not have to travel across the entire Atlantic Ocean to reach the U.S., which could increase the chances of an impactful system.

At the moment, it does not appear that any tropical systems will pose a risk to the eastern U.S. over the next couple of weeks.

#tropical #HurricaneSeason #weather #ElNiño #atlanticocean

[Central Appalachia Weather Authority @AppalachiaWx]

Severe Weather Possible Across The Ohio Valley And Central Appalachians On Sunday!!!

Summary:

A cold front will move southeastward from the Great Lakes on Sunday. The combination of moist air, instability, and wind shear will create the risk of a few severe storms across the region. While many areas will see storms on Sunday, it does not appear that the atmospheric setup will be favorable for a widespread severe weather event. The primary hazard with severe storms tomorrow will be damaging wind gusts, due to some dry air and wind energy aloft. At this point, it does not appear that there will be much of a tornado risk tomorrow, but decent low-level shear could raise some concern for rotation. The greatest risk for a few severe storms will likely be in the highlighted region. It is also worth noting that the flash flooding risk on Sunday will be much lower than Saturday, due to a more linear storm mode.

#pawx #ohwx #WVWX #mdwx #nywx #SevereWeather #weather

[Central Appalachia Weather Authority @AppalachiaWx]

Flash Flooding Possible Across Portions of The Ohio Valley And Central Appalachians On Saturday!!!

Summary:

A system will approach the Ohio Valley and Central Appalachians from the southwest on Saturday. This system will bring the potential for drenching thunderstorms that could produce heavy rainfall and flash flooding across the area. The flash flooding risk will be elevated as a result of copious amounts of moisture in the atmosphere and saturated soil from recent rainfall events. At this point, it appears that the greatest flash flooding risk will occur in the highlighted areas, though this may change with future model guidance.

#pawx #WVWX #ohwx #mdwx #flashflooding #WeatherUpdate

[Central Appalachia Weather Authority @AppalachiaWx]

Severe Weather And Possible On Saturday Across The Central Appalachians!!!

Summary:

A shortwave piece of energy will push northeast toward the region on Saturday. This will help to create some wind energy aloft. The combination of wind energy, elevated surface-based instability, and abundant low-level moisture will provide the risk for a few severe storms Saturday afternoon into the evening. At this time, it appears that the best overlap of severe weather ingredients will be in the highlighted region. Any ambitious storms on Saturday could produce damaging winds and isolated tornadoes.

#pawx #WVWX #ohwx #mdwx #WeatherUpdate

[Central Appalachia Weather Authority @AppalachiaWx]

WE WILL NEVER FORGET!!!

Twenty-five years ago today, there was an attack on the heart and soul of our nation. It wasn't an attack on the World Trade Center, but an attack on our way of life as Americans.

Today, we remember the lives that were lost and the bravery shown by our first responders that day.

"Freedom itself was attacked this morning by a faceless coward, and freedom will be defended." - President George W. Bush

[Central Appalachia Weather Authority @AppalachiaWx]

Weather Update!!!

Summary:

Heavy rainfall continues to be a concern for portions of the Central Appalachian region through tonight. The radar loop below shows where rainfall is expected through tonight. Areas that are highlighted in red have the greatest risk of heavy rainfall and flash flooding. This includes portions of eastern Kentucky, southern Ohio, and West Virginia.

#WVWX #kywx #OHwx #heavyrain #WeatherUpdate

[Central Appalachia Weather Authority @AppalachiaWx]

Flash Flooding Possible Today Across Parts of The Central Appalachians!!!

Summary:

As of Thursday morning, a frontal boundary is stalled across the Central Appalachians. An area of low pressure will ride eastward along the boundary through the day. leading to a potential for flash flooding for portions of our region. At this point, it appears the area that is most likely to experience flash flooding today is in the highlighted area. As we head into the afternoon hours, surface-based instability will build due to the heating of the day. There will also be elevated dew points along and south of the boundary. These ingredients will combine to create the risk of flash flooding today.

Safety Tip:

The heavy rainfall and flash flooding potential today will be in an area with hilly terrain. This can help to enhance the flash flood risk and create life-threatening situations for those in flood prone areas. Be sure to get to higher ground if flash flood warnings are issued for your location.

#KYWX #WVWX #OHwx #flashflooding #WeatherUpdate #FloodSafety

[Central Appalachia Weather Authority @AppalachiaWx]

Severe Watch Possible!!!

The Storm Prediction Center has highlighted an area from central Ohio to southwestern New York in a 40 percent chance of severe watch issuance. Storms have already begun to develop across northern Ohio and northwestern Pennsylvania. These storms are likely to intensify over the next few hours and could pose a risk of damaging winds and isolated tornadoes as they move southeast.

#pawx #OHwx #nywx #WVWX #SevereWeather #WeatherUpdate

[Central Appalachia Weather Authority @AppalachiaWx]

*** Wednesday Morning Severe Weather Update ***

Severe Weather Is Possible Today Across Parts of The Eastern Great Lakes, Upper Ohio Valley, And Central Appalachians!!!

Summary:

A cold front will push southeastward from the Great Lakes today, bringing a risk for severe weather to the region. As of Wednesday morning, a warm, moist air mass is in place out ahead of the system. As we head into the afternoon hours, the combination of rising surface temperatures and moist air will cause instability to build in the atmosphere. As the cold front approaches, lift in the atmosphere will increase, causing thunderstorm development. These storms will likely develop from central Ohio to Lake Erie by mid-late afternoon and push southeastward through the rest of the afternoon and evening.

The combination of elevated instability and wind shear will create the risk for severe weather. At this time, it appears that a corridor from central Ohio to southwestern New York has the highest risk of severe weather today. The primary hazard associated with severe thunderstorms today will be damaging winds, though some low level shear may provide the risk of an isolated tornado from northeast Ohio to southwestern Ohio.

#pawx #WVWX #OHwx #nywx #SevereWeather #WeatherUpdate

[Central Appalachia Weather Authority @AppalachiaWx]

Severe Weather Update!!!

Summary:

As mentioned in our post this afternoon, there is a risk of severe weather across parts of our region tomorrow afternoon and evening. At this point, it appears that the highlighted region has the highest risk for severe weather based on the latest HRRR model guidance. This includes a corridor from western Ohio through Western Pennsylvania. In this region, damaging winds wlll be the primary hazard from any severe storms, though an isolated tornado cannot be ruled out. We will update the forecast again tomorrow to analyze any new changes to the forecast.

#pawx #OHwx #SevereWeather #WeatherUpdate

[Central Appalachia Weather Authority @AppalachiaWx]

Severe Weather Possible On Wednesday Across The Upper Ohio Valley and Central Appalachians!!!

The Storm Prediction Center has highlighted parts of our region in a risk for severe weather on Wednesday.

* Location: Areas from Eastern Ohio to Southwestern New York under a Slight Risk (Level 2 out of 5) for severe weather on Wednesday. Nearby surrounding locations have been placed under a Marginal Risk (Level 1 out of 5).

* Hazards: The primary hazard with severe storms on Wednesday will be damaging winds, but isolated tornadoes are also possible.

Stay updated on the latest forecasts and outlooks from the Storm Prediction Center over the next 24 hours.

#nywx #OHwx #pawx #WVWX #SevereWeather

[Central Appalachia Weather Authority @AppalachiaWx]

*** Big Announcement ***

We are pleased to announce the release of our new weekly Meteorology brief. This brief is being created to provide Central Appalachian residents with a daily breakdown of the weather forecast across our region each week.

Weekly Meteorology Brief will include:

* The Week At A Glance: This section of the brief will provide a quick overview of the weather pattern that is expected throughout the week.

* Full Technical Briefing: This section of the blog will focus on the finer details of the forecast for each day. This will provide a closer look at temperatures, dew points, and precipitation chances in various locations across our coverage area.

In addition to the weekly Meteorology brief, we will continue to provide weather forecast updates on social media throughout the week.

The weekly Meteorology brief can be found on the CAWA website in the Blog section at the bottom of the Home page.

#BigAnnouncement #meteorology #weatherforecast #CentralAppalachia

This week's Meteorology Brief:

https://t.co/klhM35hwXY

[Central Appalachia Weather Authority @AppalachiaWx]

A Severe Thunderstorm Watch has been issued for the region. Stay weather aware! We will provide updates as needed!