Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 47, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Jul 26, 2021, 11:06 PM CDT for Florence County, Wisconsin. It was in force for 54 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 26, 2021, 11:06 PM CDT (04:06 UTC)
- Expired
- Jul 27, 2021, 12:00 AM CDT
- In force
- 54 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Florence County, WI
The radar
The Marquette radar (KMQT), 93 km from the middle of the area, began a volume at 04:09 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 26, 11:10 PM CDT | TSTM WND DMG | Tipler, WI | TREES AND POWER LINES DOWN IN TIPLER AND ACROSS FLORENCE COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.1 hours before the alert went out and 163 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 591 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 2073 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted.
374
WUUS53 KGRB 270406
SVRGRB
WIC037-270500-
/O.NEW.KGRB.SV.W.0047.210727T0406Z-210727T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
1106 PM CDT Mon Jul 26 2021
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Florence County in northeastern Wisconsin...
* Until midnight CDT.
* At 1105 PM CDT, a severe thunderstorm was located near Wisconsin
Slough Natural Area, or 9 miles southwest of Iron River, moving
east at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Tipler and Wisconsin Slough Natural Area around 1115 PM CDT.
Other locations in the path of this severe thunderstorm include
Whisker Lake Wilderness, Fern, Florence, Homestead and Kingsford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
This is a DANGEROUS SITUATION. This storm is producing widespread
wind damage across northern Forest County. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows!
&&
LAT...LON 4599 8849 4600 8847 4598 8841 4599 8838
4596 8833 4596 8825 4592 8810 4590 8811
4586 8808 4581 8813 4578 8806 4572 8806
4573 8868 4601 8868 4599 8867 4598 8864
4599 8861 4602 8860 4601 8858 4602 8851
TIME...MOT...LOC 0405Z 281DEG 29KT 4598 8874
HAIL...0.75IN
WIND...60MPH
$$
Bersch2 follow-up statements
611
WWUS53 KGRB 270436 RRA
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1136 PM CDT Mon Jul 26 2021
WIC037-270500-
/O.CON.KGRB.SV.W.0047.000000T0000Z-210727T0500Z/
Florence WI-
1136 PM CDT Mon Jul 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR EASTERN FLORENCE COUNTY...
At 1135 PM CDT, a severe thunderstorm was located over Kingsford,
moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
eastern Florence County, including the following locations... Aurora,
West Bass Lake Campground, Commonwealth and Spread Eagle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4579 8832 4589 8827 4596 8825 4592 8810
4590 8811 4586 8808 4581 8813 4578 8806
4572 8806 4573 8840
TIME...MOT...LOC 0435Z 279DEG 38KT 4584 8814
HAIL...0.75IN
WIND...60MPH
$$
Bersch280
WWUS53 KGRB 270451
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1151 PM CDT Mon Jul 26 2021
WIC037-270501-
/O.EXP.KGRB.SV.W.0047.000000T0000Z-210727T0500Z/
Florence WI-
1151 PM CDT Mon Jul 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN FLORENCE COUNTY WILL
EXPIRE AT MIDNIGHT CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Green Bay.
LAT...LON 4579 8832 4589 8827 4596 8825 4592 8810
4590 8811 4586 8808 4581 8813 4578 8806
4572 8806 4573 8840
TIME...MOT...LOC 0451Z 281DEG 29KT 4582 8797
$$
BerschThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 8:26 PM CDT | Special Weather Statement | GRB | Door | 49 min |
| Jul 26, 8:33 PM CDT | Special Marine Warning | GRB | 36 min | |
| Jul 26, 9:43 PM CDT | Special Weather Statement | GRB | Vilas | 62 min |
| Jul 26, 10:30 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Vilas | 50 min |
| Jul 26, 10:37 PM CDT | Special Weather Statement | GRB | Langlade, Lincoln | 53 min |
| Jul 26, 10:45 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Oneida | 45 min |
| Jul 26, 11:11 PM CDT | Severe Thunderstorm Warning | GRB | Florence, Forest, Langlade, Lincoln, Marathon, Oneida | 49 min |
| Jul 26, 11:33 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Menominee, Oconto, Shawano | 57 min |
| Jul 26, 11:39 PM CDT | Special Weather Statement | GRB | Marinette | 36 min |
| Jul 26, 11:58 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Outagamie, Portage, Waupaca | 62 min |
| Jul 27, 12:16 AM CDT | Special Marine Warning | GRB | 89 min | |
| Jul 27, 12:24 AM CDT | Severe Thunderstorm Warning | GRB | Brown, Marinette, Oconto, Shawano | 66 min |
| Jul 27, 12:37 AM CDT | Special Marine Warning | GRB | 83 min | |
| Jul 27, 12:51 AM CDT | Severe Thunderstorm Warning | GRB | Door, Kewaunee | 54 min |
| Jul 27, 12:52 AM CDT | Special Weather Statement | GRB | Calumet, Winnebago | 38 min |
| Jul 27, 12:55 AM CDT | Special Weather Statement | GRB | Manitowoc | 35 min |
| Jul 27, 1:18 AM CDT | Special Weather Statement | GRB | Oneida | 42 min |
| Jul 27, 1:28 AM CDT | Severe Thunderstorm Warning | GRB | Oneida | 32 min |
| Jul 27, 1:42 AM CDT | Special Weather Statement | GRB | Manitowoc | 48 min |
| Jul 27, 1:53 AM CDT | Special Weather Statement | GRB | Lincoln | 52 min |
| Jul 27, 2:30 AM CDT | Special Weather Statement | GRB | Langlade | 45 min |
| Jul 27, 2:41 AM CDT | Special Weather Statement | GRB | Langlade, Lincoln, Marathon, Menominee, Shawano | 49 min |
| Jul 27, 3:20 AM CDT | Special Weather Statement | GRB | Brown, Marathon, Menominee, Outagamie, Portage, Shawano and 2 more | 40 min |
| Jul 27, 3:51 AM CDT | Special Weather Statement | GRB | Brown, Calumet, Kewaunee, Manitowoc, Marathon, Outagamie and 6 more | 69 min |
| Jul 27, 6:16 AM CDT | Special Weather Statement | GRB | Portage, Wood | 44 min |
| Jul 27, 6:58 AM CDT | Special Weather Statement | GRB | Portage, Wood | 47 min |
| Jul 27, 7:27 AM CDT | Special Weather Statement | GRB | Waushara | 63 min |
| Jul 27, 8:33 AM CDT | Special Weather Statement | GRB | Calumet, Manitowoc, Portage, Waushara, Winnebago, Wood | 57 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.