Alerts from NWS Green Bay WI (UNOFFICIAL)
LightNews LightNews
grb.nws-bot.us
Alerts from NWS Green Bay WI (UNOFFICIAL)
@grb.nws-bot.us
470 followers 1 following 12K posts
Unofficial bot sharing alerts from NWS Green Bay WI.

This account is not monitored. Contact @wandrme.paxex.aero if needed.
Posts Replies Media Videos
grb.nws-bot.us
GRB issues Area Forecast Discussion (AFD) at Dec 15, 5:18 AM CST
at Mon, 15 Dec 2025 11:18:55 +0000 via IEMbot
Additional Details Here.
December 15, 2025 at 11:27 AM
grb.nws-bot.us
🚨 Heavy Freezing Spray Warning issued December 15 at 2:44AM CST until December 15 at 8:00AM CST by NWS Green Bay WI 🚨
Additional Details Here.
* WHAT...For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater may rapidly accumulate on vessels. For the Small Craft Advisory, southwest winds 15 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft. * WHERE...Central Bay of Green Bay. * WHEN...For the Heavy Freezing Spray Warning, until 8 AM CST this morning. For the Small Craft Advisory, until noon CST today. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater may rapidly accumulate on vessels. For the Small Craft Advisory, southwest winds 15 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft. * WHERE...Central Bay of Green Bay. * WHEN...For the Heavy Freezing Spray Warning, until 8 AM CST this morning. For the Small Craft Advisory, until noon CST today. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Southern Bay of Green Bay. * WHEN...Until noon CST today. * IMPACTS...Conditions will be hazardous to small craft.
December 15, 2025 at 9:00 AM
grb.nws-bot.us
GRB continues Freezing Spray Warning for Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI [LM] till Dec ... at Mon, 15 Dec 2025 08:44:54 +0000 via IEMbot
Additional Details Here.
December 15, 2025 at 8:47 AM
grb.nws-bot.us
GRB issues Hazardous Weather Outlook (HWO) at Dec 15, 2:22 AM CST
at Mon, 15 Dec 2025 08:22:46 +0000 via IEMbot
Additional Details Here.
December 15, 2025 at 8:27 AM
grb.nws-bot.us
RHINELANDER WI Dec 14
Climate Report:
High: 9
Low: -12
Precip: 0.0"
Snow: 0.0" Snow Depth: 7"
at Mon, 15 Dec 2025 07:55:28 +0000 via IEMbot
Additional Details Here.
December 15, 2025 at 8:07 AM
grb.nws-bot.us
WAUSAU WI Dec 14
Climate Report:
High: 6
Low: -12
Precip: 0.0"
Snow: 0.0" Snow Depth: 8"
at Mon, 15 Dec 2025 07:55:28 +0000 via IEMbot
Additional Details Here.
December 15, 2025 at 8:07 AM
grb.nws-bot.us
GRB issues Area Forecast Discussion (AFD) at Dec 14, 11:19 PM CST
at Mon, 15 Dec 2025 05:19:32 +0000 via IEMbot
Additional Details Here.
December 15, 2025 at 5:27 AM
grb.nws-bot.us
🚨 Small Craft Advisory issued December 14 at 10:04PM CST until December 15 at 12:00PM CST by NWS Green Bay WI 🚨
Additional Details Here.
* WHAT...For the Small Craft Advisory, southwest winds 15 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Central Bay of Green Bay. * WHEN...For the Small Craft Advisory, until noon CST Monday. For the Heavy Freezing Spray Warning, until 8 AM CST Monday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...For the Small Craft Advisory, southwest winds 15 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Central Bay of Green Bay. * WHEN...For the Small Craft Advisory, until noon CST Monday. For the Heavy Freezing Spray Warning, until 8 AM CST Monday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Southern Bay of Green Bay. * WHEN...Until noon CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
December 15, 2025 at 4:15 AM
grb.nws-bot.us
GRB issues Area Forecast Discussion (AFD) at Dec 14, 5:02 PM CST
at Sun, 14 Dec 2025 23:03:01 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 11:07 PM
grb.nws-bot.us
GREEN BAY WI Dec 14
Climate Report:
High: 5
Low: -7
Precip: 0.0"
Snow: 0.0" Snow Depth: 9"
at Sun, 14 Dec 2025 22:18:32 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 10:27 PM
grb.nws-bot.us
RHINELANDER WI Dec 14
Climate Report:
High: 8
Low: -12
Precip: 0.0"
Snow: 0.0"
at Sun, 14 Dec 2025 22:18:32 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 10:27 PM
grb.nws-bot.us
🚨 Small Craft Advisory issued December 14 at 3:29PM CST until December 15 at 12:00PM CST by NWS Green Bay WI 🚨
Additional Details Here.
* WHAT...For the Small Craft Advisory, southwest winds 15 to 25 kts with gusts up to 30 kts and waves 2 to 5 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Central Bay of Green Bay. * WHEN...For the Small Craft Advisory, from midnight tonight to noon CST Monday. For the Heavy Freezing Spray Warning, from 1 AM to 8 AM CST Monday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...For the Small Craft Advisory, southwest winds 15 to 25 kts with gusts up to 30 kts and waves 2 to 5 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Central Bay of Green Bay. * WHEN...For the Small Craft Advisory, from midnight tonight to noon CST Monday. For the Heavy Freezing Spray Warning, from 1 AM to 8 AM CST Monday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...Southwest winds 15 to 25 kts with gusts up to 30 kts and waves 2 to 5 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Southern Bay of Green Bay. * WHEN...From midnight tonight to noon CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
December 14, 2025 at 9:45 PM
grb.nws-bot.us
GRB issues Area Forecast Discussion (AFD) at Dec 14, 2:57 PM CST
at Sun, 14 Dec 2025 20:57:48 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 9:07 PM
grb.nws-bot.us
GRB issues Hazardous Weather Outlook (HWO) at Dec 14, 2:03 PM CST
at Sun, 14 Dec 2025 20:03:47 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 8:07 PM
grb.nws-bot.us
GRB issues Area Forecast Discussion (AFD) at Dec 14, 11:19 AM CST
at Sun, 14 Dec 2025 17:19:29 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 5:27 PM
grb.nws-bot.us
GRB issues Hazardous Weather Outlook (HWO) at Dec 14, 10:33 AM CST
at Sun, 14 Dec 2025 16:34:05 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 4:47 PM
grb.nws-bot.us
GRB issues Public Information Statement (PNS) at Dec 14, 9:54 AM CST ....COOPERATIVE OBSERVATIONS.... via IEMbot
Additional Details Here.
December 14, 2025 at 4:07 PM
grb.nws-bot.us
GRB expires Cold Weather Advisory for Brown, Calumet, Kewaunee, Langlade, Lincoln, Manitowoc, Marathon, Menominee, Outagamie, Portage, Shawano, Waupaca, Waushara, Winnebago, Wood [... at Sun, 14 Dec 2025 15:59:29 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 4:07 PM
grb.nws-bot.us
GRB continues Freezing Spray Warning valid at Dec 15, 1:00 AM CST for Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little S... at Sun, 14 Dec 2025 15:35:01 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 3:47 PM
grb.nws-bot.us
🚨 Small Craft Advisory issued December 14 at 9:34AM CST until December 14 at 12:00PM CST by NWS Green Bay WI 🚨
Additional Details Here.(2/2)
* WHAT...For the first Small Craft Advisory, northwest winds 15 to 25 kts and waves 2 to 4 ft. For the second Small Craft Advisory, southwest winds 15 to 25 kts with gusts up to 30 kts and waves 4 to 7 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Southern Bay of Green Bay. * WHEN...For the first Small Craft Advisory, until noon CST today. For the second Small Craft Advisory, from midnight tonight to noon CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
December 14, 2025 at 3:45 PM
grb.nws-bot.us
🚨 Small Craft Advisory issued December 14 at 9:34AM CST until December 14 at 12:00PM CST by NWS Green Bay WI 🚨
Additional Details Here.
(1/2)
* WHAT...For the first Small Craft Advisory, northwest winds 15 to 25 kts and waves 2 to 4 ft. For the second Small Craft Advisory, southwest winds 20 to 30 kts and waves 3 to 6 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Central Bay of Green Bay. * WHEN...For the first Small Craft Advisory, until noon CST today. For the second Small Craft Advisory, from midnight tonight to noon CST Monday. For the Heavy Freezing Spray Warning, from 1 AM to 8 AM CST Monday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...For the first Small Craft Advisory, northwest winds 15 to 25 kts and waves 2 to 4 ft. For the second Small Craft Advisory, southwest winds 20 to 30 kts and waves 3 to 6 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Central Bay of Green Bay. * WHEN...For the first Small Craft Advisory, until noon CST today. For the second Small Craft Advisory, from midnight tonight to noon CST Monday. For the Heavy Freezing Spray Warning, from 1 AM to 8 AM CST Monday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...For the first Small Craft Advisory, northwest winds 15 to 25 kts and waves 2 to 4 ft. For the second Small Craft Advisory, southwest winds 20 to 30 kts and waves 3 to 6 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Central Bay of Green Bay. * WHEN...For the first Small Craft Advisory, until noon CST today. For the second Small Craft Advisory, from midnight tonight to noon CST Monday. For the Heavy Freezing Spray Warning, from 1 AM to 8 AM CST Monday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. * WHAT...For the first Small Craft Advisory, northwest winds 15 to 25 kts and waves 2 to 4 ft. For the second Small Craft Advisory, southwest winds 15 to 25 kts with gusts up to 30 kts and waves 4 to 7 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan, and Southern Bay of Green Bay. * WHEN...For the first Small Craft Advisory, until noon CST today. For the second Small Craft Advisory, from midnight tonight to noon CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
December 14, 2025 at 3:45 PM
grb.nws-bot.us
Cold Weather Advisory issued December 14 at 6:15AM CST until December 14 at 10:00AM CST by NWS Green Bay WI
Additional Details Here.
* WHAT...Very cold wind chills as low as 30 below expected. * WHERE...Portions of central, east central, north central, and northeast Wisconsin. * WHEN...Until 10 AM CST this morning. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 20 minutes. Wind chill values can lead to hypothermia with prolonged exposure.
December 14, 2025 at 12:30 PM
grb.nws-bot.us
GRB updates Cold Weather Advisory (expires Florence, Forest, Northern Marinette County, Northern Oconto County, Oneida, Southern Marinette County, Southern Oconto County, Vilas [WI... at Sun, 14 Dec 2025 12:15:12 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 12:27 PM
grb.nws-bot.us
GRB issues Area Forecast Discussion (AFD) at Dec 14, 5:49 AM CST
at Sun, 14 Dec 2025 11:50:20 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 12:07 PM
grb.nws-bot.us
GRB continues Cold Weather Advisory (Brown, Calumet, Florence, Forest, Kewaunee, Langlade, Lincoln, Manitowoc, Marathon, Menominee, Northern Marinette County, Northern Oconto Count... at Sun, 14 Dec 2025 10:55:51 +0000 via IEMbot
Additional Details Here.
December 14, 2025 at 11:07 AM