US National Weather Service Green Bay Wisconsin

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[09.15.21]Weather Learn Wednesday!Since we were unable to launch a weather balloon this morning, here's a sounding from ...
09/15/2021

[09.15.21]
Weather Learn Wednesday!
Since we were unable to launch a weather balloon this morning, here's a sounding from just before 10 AM from an aircraft landing at General Mitchell Airport in Milwaukee. (Yes, some planes have similar instrumentation to a radiosonde! The radiosonde is what we attach to our weather balloons that collects the data.)

A sounding is a vertical snapshot of the atmosphere. The bold red line is temperature and the bold blue line is dew point. The closer the temperature and dewpoint are, the moister the air is. So, it looks like we'll see some clouds developing this afternoon with cloud bases around 5000 ft.
There are wind barbs also in red on the right with little flags and staffs. They show how the wind direction and speed vary with height. The top of the wind barb or staff represents the direction the wind is coming from, so pointing up is a north wind, pointing down is a south wind, pointing to the right is a west wind, and pointing to the left is an east wind. This sounding shows winds at the surface are from the north then gradually backing west going up in the atmosphere.

[09.15.21]
Weather Learn Wednesday!
Since we were unable to launch a weather balloon this morning, here's a sounding from just before 10 AM from an aircraft landing at General Mitchell Airport in Milwaukee. (Yes, some planes have similar instrumentation to a radiosonde! The radiosonde is what we attach to our weather balloons that collects the data.)

A sounding is a vertical snapshot of the atmosphere. The bold red line is temperature and the bold blue line is dew point. The closer the temperature and dewpoint are, the moister the air is. So, it looks like we'll see some clouds developing this afternoon with cloud bases around 5000 ft.
There are wind barbs also in red on the right with little flags and staffs. They show how the wind direction and speed vary with height. The top of the wind barb or staff represents the direction the wind is coming from, so pointing up is a north wind, pointing down is a south wind, pointing to the right is a west wind, and pointing to the left is an east wind. This sounding shows winds at the surface are from the north then gradually backing west going up in the atmosphere.

09/15/2021

[09.15.21]
POSTPONED | Weekly NOAA Weather Radio Test

The Weekly NOAA Weather Radio Alarm test, normally conducted on Wednesday's between 11 am-12 pm, is postponed until a later date this week due to technical difficulties.

We apologize for any inconvenience this may cause.

Beautiful conditions are expected across the region today, with mostly sunny skies and highs in the 70s.  Areas closer t...
09/15/2021

Beautiful conditions are expected across the region today, with mostly sunny skies and highs in the 70s. Areas closer to Lake Michigan can expected temperatures in the upper 60s. Winds will be light.

Beautiful conditions are expected across the region today, with mostly sunny skies and highs in the 70s. Areas closer to Lake Michigan can expected temperatures in the upper 60s. Winds will be light.

[9/14/21] Skies will continue to clear across the region tonight, for a fairly quiet night with seasonal temperatures. L...
09/15/2021

[9/14/21] Skies will continue to clear across the region tonight, for a fairly quiet night with seasonal temperatures. Low will range from the middle 40s in the Northwoods to the middle 50s across the Fox Valley and next to the lakeshore. The next chance to see any active weather in the region will be Thursday night and last into Friday.

[9/14/21] Skies will continue to clear across the region tonight, for a fairly quiet night with seasonal temperatures. Low will range from the middle 40s in the Northwoods to the middle 50s across the Fox Valley and next to the lakeshore. The next chance to see any active weather in the region will be Thursday night and last into Friday.

9:22 AM 9/14/21: Heavy rain fell across far north-central Wisconsin last night with much lighter rainfall amounts across...
09/14/2021

9:22 AM 9/14/21: Heavy rain fell across far north-central Wisconsin last night with much lighter rainfall amounts across central and east-central Wisconsin. How much rain fell at your location, click here: https://nwschat.weather.gov/p.php?pid=202109141332-KGRB-NOUS43-PNSGRB

9:22 AM 9/14/21: Heavy rain fell across far north-central Wisconsin last night with much lighter rainfall amounts across central and east-central Wisconsin. How much rain fell at your location, click here: https://nwschat.weather.gov/p.php?pid=202109141332-KGRB-NOUS43-PNSGRB

Most/all of the showers & storms have moved out of the area. Only a very small chance of showers the rest of the day. Cl...
09/14/2021

Most/all of the showers & storms have moved out of the area. Only a very small chance of showers the rest of the day. Cloudy this AM then some clearing. Next chance for storms arrive Thursday night into Friday. Above normal temps will continue.

Most/all of the showers & storms have moved out of the area. Only a very small chance of showers the rest of the day. Cloudy this AM then some clearing. Next chance for storms arrive Thursday night into Friday. Above normal temps will continue.

09/14/2021

9/13/2021
⛈️Still looking at scattered showers and thunderstorms moving across the area overnight. Could be some hail or gusty winds within the storms as they come through.

9/13/2021⛈️ Showers and thunderstorms are forecast this evening and overnight, a few could pop up early this evening, bu...
09/13/2021

9/13/2021
⛈️ Showers and thunderstorms are forecast this evening and overnight, a few could pop up early this evening, but most activity is forecast between 10pm - 4am. Some strong gusts and hail up to 1-inch are possible.
weather.gov/grb/weatherstory

9/13/2021
⛈️ Showers and thunderstorms are forecast this evening and overnight, a few could pop up early this evening, but most activity is forecast between 10pm - 4am. Some strong gusts and hail up to 1-inch are possible.
weather.gov/grb/weatherstory

09/13/2021

[9/13/21] 1:45pm. Here's a look at the current regional satellite and radar. You can see a few showers continuing across southern Wisconsin, as well as the main low pressure system and associated precipitation to our west. This system will make its way into our region by tonight.

09/13/2021

[9/13/21] 10:30am. Here's one model for how the day is generally expected to unfold. We expect a few isolated showers to continue working their way northwards this afternoon along the warm front, possibly with a few rumbles mixed by the early evening. Then tonight, the main system will move in from the west, with much more widespread rainfall. Tonight will also be the main window for any potential strong or severe storms.

Small chances for showers/storms today, becoming likely tonight. The strongest storms could produce gusty winds, hail an...
09/13/2021

Small chances for showers/storms today, becoming likely tonight. The strongest storms could produce gusty winds, hail and torrential rain. Localized flooding is also possible. Stay up to date with the latest forecast & be weather aware!

🥶🥶 A CHILLY start to the morning in Land o Lakes and Tomahawk. Both are sitting at 37 degrees at 5am!
09/13/2021

🥶🥶 A CHILLY start to the morning in Land o Lakes and Tomahawk. Both are sitting at 37 degrees at 5am!

🥶🥶 A CHILLY start to the morning in Land o Lakes and Tomahawk. Both are sitting at 37 degrees at 5am!

9/12/2021Heading into Monday... A few showers or thunderstorms are possible, mainly in central and east-central WI.  A b...
09/13/2021

9/12/2021
Heading into Monday... A few showers or thunderstorms are possible, mainly in central and east-central WI. A better chance of rain and thunderstorms Monday night into Tuesday.
weather.gov/grb/weatherstory

9/12/2021
Heading into Monday... A few showers or thunderstorms are possible, mainly in central and east-central WI. A better chance of rain and thunderstorms Monday night into Tuesday.
weather.gov/grb/weatherstory

9/12/2021🌧️ Scattered rain showers will continue for the new couple hours, through about 7-8 pm, and then end for the ni...
09/12/2021

9/12/2021
🌧️ Scattered rain showers will continue for the new couple hours, through about 7-8 pm, and then end for the night. Showers will be across central and east-central WI, or mainly south of a Merrill to Menominee line.

9/12/2021
🌧️ Scattered rain showers will continue for the new couple hours, through about 7-8 pm, and then end for the night. Showers will be across central and east-central WI, or mainly south of a Merrill to Menominee line.

09/12/2021

[9/12/21] Showers continue to track along and south of Highway 29 this afternoon, bringing light rain to the region. No lightning has been detected in the past hour, except over central Lake Michigan. The video below depicts the current radar overlaid on the satellite imagery.

Isolated-scattered showers and a couple storms south of Hwy 29 today and south of Hwy 10 tonight. More widespread shower...
09/12/2021

Isolated-scattered showers and a couple storms south of Hwy 29 today and south of Hwy 10 tonight. More widespread showers/storms Monday night with locally heavy rainfall. Risk for widespread severe is low. Temps near to slightly above normal for most spots.

09/11/2021

9/11/20021
Smoke in the upper atmosphere has made for somewhat hazy skies this afternoon. Most of the smoke will remain well overhead, but you may notice a smoky smell this evening or overnight. Smoke will clear out tomorrow morning. Animation shows forecast smoke aloft.

9/11/2021🌛 Mainly clear and pleasant weather this evening.  A chance of showers getting into central WI or the southern ...
09/11/2021

9/11/2021
🌛 Mainly clear and pleasant weather this evening. A chance of showers getting into central WI or the southern Fox Valley late tonight.
⛈️ Scattered showers and isolated storms south of Wausau to Sturgeon Bay bay line tomorrow.

09/11/2021

[9/11/21] Here's a quick look at the past six hours of surface observations, with overlaid satellite and a rough drawing of the cold front passing through the region. The arrows drawn on the map are the surface observation locations, which visibly shift from the southwest to the northwest behind the frontal passage. Wind shifts such as this are one of the ways meteorologists can identify surface based frontal passages.

Another can be dewpoints, which is also the case today. The pair of numbers next to each site are the temperature (top #) and dewpoint (bottom #). Behind the front, dewpoints drop fairly quickly from the lower to middle 60s to the lower to middle 50s, indicating the arrival of a drier air mass.

If we do get any storm development today, it will be along the frontal passage.

Persistent and gusty south to southwest winds will create large waves on northern Lake Michigan today. The winds will al...
09/11/2021

Persistent and gusty south to southwest winds will create large waves on northern Lake Michigan today. The winds will also create choppy conditions on the Bay. Use extra caution if headed on the water.

Persistent and gusty south to southwest winds will create large waves on northern Lake Michigan today. The winds will also create choppy conditions on the Bay. Use extra caution if headed on the water.

Most spots stay dry today. But there will be a small chance of a storm this afternoon/evening. *IF* a storm can form, it...
09/11/2021

Most spots stay dry today. But there will be a small chance of a storm this afternoon/evening. *IF* a storm can form, it could produce gusty winds & hail. It will be warm and a little humid for all but far northern WI, with gusty southwest/west winds as well.

Most spots stay dry today. But there will be a small chance of a storm this afternoon/evening. *IF* a storm can form, it could produce gusty winds & hail. It will be warm and a little humid for all but far northern WI, with gusty southwest/west winds as well.

09/10/2021

9/10/2021
🌤️ Lots of little cumulus clouds overhead today. Can already see these clouds starting to dissipate late this afternoon.

9/10/2021🌛 A pleasant evening and good campfire weather tonight. Clouds will dissipate and a light wind will keep temper...
09/10/2021

9/10/2021
🌛 A pleasant evening and good campfire weather tonight. Clouds will dissipate and a light wind will keep temperatures from plummeting. Temps will generally fall into the 50s, with lower 60s along Lake Michigan.

9/10/2021
🌛 A pleasant evening and good campfire weather tonight. Clouds will dissipate and a light wind will keep temperatures from plummeting. Temps will generally fall into the 50s, with lower 60s along Lake Michigan.

[9/10/21] A cold front will pass through the region late tomorrow afternoon, bringing with it a chance for isolated stor...
09/10/2021

[9/10/21] A cold front will pass through the region late tomorrow afternoon, bringing with it a chance for isolated storms for the evening. Coverage will be isolated, so most will likely be exempt from storms, however, any storms that do develop will have the potential to be strong to severe. The main area of concern will be across central WI, as the front passes around the time of peak heating.

[9/10/21] A cold front will pass through the region late tomorrow afternoon, bringing with it a chance for isolated storms for the evening. Coverage will be isolated, so most will likely be exempt from storms, however, any storms that do develop will have the potential to be strong to severe. The main area of concern will be across central WI, as the front passes around the time of peak heating.

After any morning fog burns off, look for a quiet day across the area with highs mainly in the 70s. It will be warm on S...
09/10/2021

After any morning fog burns off, look for a quiet day across the area with highs mainly in the 70s. It will be warm on Saturday with an isolated storm possible, mainly after sunset. Small chances for a storm continue into Sunday with cooler temperatures expected.

After any morning fog burns off, look for a quiet day across the area with highs mainly in the 70s. It will be warm on Saturday with an isolated storm possible, mainly after sunset. Small chances for a storm continue into Sunday with cooler temperatures expected.

Skies will become mostly clear later on tonight, with areas of fog forming overnight. Some of the fog may become locally...
09/09/2021

Skies will become mostly clear later on tonight, with areas of fog forming overnight. Some of the fog may become locally dense. Lows will fall to the lower 40s north to the lower 50s east.

Skies will become mostly clear later on tonight, with areas of fog forming overnight. Some of the fog may become locally dense. Lows will fall to the lower 40s north to the lower 50s east.

4:40 AM 9/9/21: Patchy dense fog will continue across the north through 8 am this morning, then should dissipate by 9 AM...
09/09/2021

4:40 AM 9/9/21: Patchy dense fog will continue across the north through 8 am this morning, then should dissipate by 9 AM. Slow down and use your low beam headlights if you encounter dense fog.

4:40 AM 9/9/21: Patchy dense fog will continue across the north through 8 am this morning, then should dissipate by 9 AM. Slow down and use your low beam headlights if you encounter dense fog.

4:17 AM 9/9/21: It is never too early to plan ahead for the weekend. It will turn warmer Friday and Saturday, then a col...
09/09/2021

4:17 AM 9/9/21: It is never too early to plan ahead for the weekend. It will turn warmer Friday and Saturday, then a cold front will move across the area Saturday. Cooler temperatures will return on Sunday.

4:17 AM 9/9/21: It is never too early to plan ahead for the weekend. It will turn warmer Friday and Saturday, then a cold front will move across the area Saturday. Cooler temperatures will return on Sunday.

4:14 AM 9/8/21: Small rain chances the next few days, then turning warmer into the weekend.
09/08/2021

4:14 AM 9/8/21: Small rain chances the next few days, then turning warmer into the weekend.

4:14 AM 9/8/21: Small rain chances the next few days, then turning warmer into the weekend.

Scattered showers and isolated thunderstorms will continue mainly across northern Wisconsin this evening. While not seve...
09/08/2021

Scattered showers and isolated thunderstorms will continue mainly across northern Wisconsin this evening. While not severe, the storms will have the ability to produce wind gusts of 30 to 40 mph, pea-size hail and brief heavy rainfall.

Scattered showers and isolated thunderstorms will continue mainly across northern Wisconsin this evening. While not severe, the storms will have the ability to produce wind gusts of 30 to 40 mph, pea-size hail and brief heavy rainfall.

Scattered showers and thunderstorms will continue mainly across northern Wisconsin this evening. While not severe, the s...
09/08/2021

Scattered showers and thunderstorms will continue mainly across northern Wisconsin this evening. While not severe, the storms will have the ability to produce wind gusts of 30 to 40 mph, pea-size hail and brief heavy rainfall.

Scattered showers and thunderstorms will continue mainly across northern Wisconsin this evening. While not severe, the storms will have the ability to produce wind gusts of 30 to 40 mph, pea-size hail and brief heavy rainfall.

A preliminary hail report of 4.5 inches Tuesday morning north of Appleton is a rare event in northeast Wisconsin. The ch...
09/07/2021

A preliminary hail report of 4.5 inches Tuesday morning north of Appleton is a rare event in northeast Wisconsin. The chart above showed that only four other occurrences of 4.5 inch or greater hail in the state of Wisconsin since 1950.

A preliminary hail report of 4.5 inches Tuesday morning north of Appleton is a rare event in northeast Wisconsin. The chart above showed that only four other occurrences of 4.5 inch or greater hail in the state of Wisconsin since 1950.

A cool air mass aloft will combine with daytime heating and the passage of an upper-level disturbance, to bring a chance...
09/07/2021

A cool air mass aloft will combine with daytime heating and the passage of an upper-level disturbance, to bring a chance of mainly afternoon showers and thunderstorms to the area on Wednesday. Most of Thursday and Friday will be dry before a cold front approaches the region late Saturday into Sunday morning with a return of small rain chances. Temperatures are forecast to moderate late in the week ahead of the advancing cold front.

A cool air mass aloft will combine with daytime heating and the passage of an upper-level disturbance, to bring a chance of mainly afternoon showers and thunderstorms to the area on Wednesday. Most of Thursday and Friday will be dry before a cold front approaches the region late Saturday into Sunday morning with a return of small rain chances. Temperatures are forecast to moderate late in the week ahead of the advancing cold front.

Isolated showers and thunderstorms are expected to persist across northern Wisconsin tonight as upper-level disturbances...
09/07/2021

Isolated showers and thunderstorms are expected to persist across northern Wisconsin tonight as upper-level disturbances move across Lake Superior. The rest of the region will be mostly clear to partly cloudy with low temperatures near normal for early September.

Isolated showers and thunderstorms are expected to persist across northern Wisconsin tonight as upper-level disturbances move across Lake Superior. The rest of the region will be mostly clear to partly cloudy with low temperatures near normal for early September.

[09.07.21]WOW! 😱 Quite the shelf cloud from this morning! The storms that created this outflow (or shelf cloud), were st...
09/07/2021

[09.07.21]
WOW! 😱 Quite the shelf cloud from this morning! The storms that created this outflow (or shelf cloud), were still about 15 to 20 miles behind it!

[09.07.21]
WOW! 😱 Quite the shelf cloud from this morning! The storms that created this outflow (or shelf cloud), were still about 15 to 20 miles behind it!

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Sent to be by my daughter in Appleton on French Rd just north of Edgewood a half hour ago.....
August 11, 2021 3:15pm Stiles township Rainfall 1.21in
Damage path from Pleasant Lake in Coloma, Wi to near Hwy 21 & I-39
Power flash happened around the 2:06 mark.... 4.5mi east of Coloma, looking WNW towards town.
POSSIBLE TORNADO near Coloma, Waushara co. Taken at 3:57pm. Still pic from video. Power flash visible and it outlines possible tornado. Location was 4.5mi east, looking WNW towards Coloma
Here is one of the photos of a shelf cloud in Schofield taken over Lake Wausau on Wednesday evening.
Please tell me why there wasn't a tornado warning for Winnebago county earlier? The sirens didn't go off until power was out and trees were falling. Wouldn't erring on the side of caution be better than making a potentially fatal mistake and seeming like a joke of an organization for just rolling the dice on calling it? The tv meteorologists were saying rotation west of Omro over an over again before it was called.
Constant lightning, no wind yet and light rain at EAA grounds at 11:10 pm
All of us at Airventure this week truly appreciate all you men and women do for us during our time here. Thank you!!
TREES DOWN WINDS 60mph est Stiles township Oconto co Had strong east winds as the storm approached 40-50 with tree damage…. Switched west and increased to 60+
Heavy snow in Glenmore? That storm WAS a doozy!
9:40pm July 14, 2021 Stiles township, Oconto co Rainfall measured 1.32in Storm total from from both rounds of storms. Still raining lightly at time of report