Alert archive / Wisconsin / Special Weather Statements in 2020
Special Weather Statement, NWS Twin Cities, MN
NWS Twin Cities, MN issued this special weather statement at Jun 30, 2020, 5:46 AM CDT for Polk County, Wisconsin. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2020, 5:46 AM CDT (10:46 UTC)
- Expired
- Jun 30, 2020, 6:15 AM CDT
- In force
- 29 min
- Issued by
- NWS Twin Cities, MN
County Polk County, WI
The radar
The Minneapolis radar (KMPX), 124 km from the middle of the area, began a volume at 10:48 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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 10.8 hours before the alert went out and 126 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
- 488 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 1066 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before this special weather statement went out at Jun 30, 4:58 AM CDT, 48 minutes earlier.
Area forecast discussion, Jun 30, 4:58 AM CDT, 48 minutes before
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</html>Hazardous weather outlook, Jun 30, 5:05 AM CDT, 41 minutes before
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Special weather statement, Jun 29, 11:58 PM CDT, 5 hours 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Twin Cities/Chanhassen MN
1158 PM CDT Mon Jun 29 2020
MNC003-025-037-053-059-123-141-163-171-300700-
Wright-Hennepin-Dakota-Chisago-Anoka-Isanti-Sherburne-Washington-
Ramsey-
1158 PM CDT Mon Jun 29 2020
...URBAN AND SMALL STREAM FLOODING POSSIBLE...
Thunderstorms with heavy rain may cause minor flooding in the
following counties...
Wright...Hennepin...Dakota...Chisago...Anoka...Isanti...Sherburne...
Washington...Ramsey...
* Until 200 AM CDT.
* At 1156 PM CDT, Doppler radar indicated heavy rain due to
thunderstorms. Rainfall amounts up to an inch may lead to
localized areas of urban and small stream flooding.
* Some locations that will experience flooding include...
Minneapolis, St. Paul, Cambridge, Bloomington, Brooklyn Park,
Plymouth, Eagan, Woodbury, Maple Grove, Coon Rapids, Eden Prairie
and Burnsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall may cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
&&
LAT...LON 4558 9288 4555 9274 4545 9265 4540 9265
4529 9276 4511 9274 4507 9280 4494 9275
4475 9281 4469 9273 4476 9333 4479 9333
4478 9338 4486 9352 4489 9352 4489 9359
4502 9387 4543 9353 4574 9314 4573 9285
ETASpecial weather statement, Jun 30, 1:34 AM CDT, 4 hours 12 minutes before
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</html>Special weather statement, Jun 30, 4:44 AM CDT, 1 hour 2 minutes before
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</html>Special weather statement, Jun 30, 5:46 AM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 9:02 PM CDT | Special Weather Statement | MPX | Benton, Mille Lacs, Stearns | 88 min |
| Jun 29, 9:12 PM CDT | Special Weather Statement | MPX | Todd | 63 min |
| Jun 29, 10:38 PM CDT | Special Weather Statement | MPX | Todd | 112 min |
| Jun 29, 11:58 PM CDT | Special Weather Statement | MPX | Anoka, Chisago, Hennepin, Isanti, Ramsey, Washington | 2 hr |
| Jun 30, 12:53 AM CDT | Areal Flood Warning | MPX | Morrison | 9 hr |
| Jun 30, 4:18 AM CDT | Flash Flood Warning | MPX | Mille Lacs | 2 hr |
| Jun 30, 4:44 AM CDT | Special Weather Statement | MPX | Isanti | 3 hr |
| Jun 30, 1:34 AM CDT | Special Weather Statement | MPX | Barron, Dunn, Pierce, Polk, Rusk, Saint Croix | 3 hr |
Nearby
Special Weather Statements in Wisconsin, 2020Every special weather statement in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.