Alert archive / Minnesota / Special Weather Statements in 2021
Special Weather Statement, NWS Twin Cities, MN
NWS Twin Cities, MN issued this special weather statement at Jul 24, 2021, 2:27 AM CDT for Chisago County, Isanti County, Minnesota. It was in force for 33 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
- Jul 24, 2021, 2:27 AM CDT (07:27 UTC)
- Expired
- Jul 24, 2021, 3:00 AM CDT
- In force
- 33 min
- Issued by
- NWS Twin Cities, MN
Counties Chisago County, MN, Isanti County, MN
The radar
The Minneapolis radar (KMPX), 93 km from the middle of the area, began a volume at 07:29 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, 7.5 hours before the alert went out and 94 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
- 2540 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1098 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.4
The text
As transmitted.
645
WWUS83 KMPX 240727
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
227 AM CDT Sat Jul 24 2021
MNZ045-052-053-WIZ014-240800-
Isanti-Kanabec-Chisago-Polk-
227 AM CDT Sat Jul 24 2021
...A LINE OF STORMS WILL AFFECT SOUTHEASTERN KANABEC...CHISAGO...
ISANTI AND NORTHWESTERN POLK COUNTIES...
At 227 AM CDT, radar indicated strong thunderstorms were located
along a line extending from 10 miles southwest of Brunswick to near
Stacy. Movement was east at 40 mph.
Winds in excess of 40 mph are possible with these storms.
Locations impacted include...
Cambridge, Forest Lake, North Branch, Isanti, Chisago City,
Lindstrom, Rush City, Stacy, Brunswick, Grasston, Wyoming and Spring
Lake.
LAT...LON 4573 9314 4573 9285 4572 9287 4564 9288
4565 9261 4554 9256 4533 9300 4535 9303
4541 9302 4541 9313 4559 9352 4569 9351
4585 9314
TIME...MOT...LOC 0727Z 252DEG 36KT 4567 9341 4543 9293
$$
TDHThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 12:03 AM CDT | Special Weather Statement | MPX | Stevens | 27 min |
| Jul 24, 12:36 AM CDT | Special Weather Statement | MPX | Swift | 24 min |
| Jul 24, 1:07 AM CDT | Special Weather Statement | MPX | Pope | 23 min |
| Jul 24, 1:09 AM CDT | Special Weather Statement | MPX | Douglas | 36 min |
| Jul 24, 1:37 AM CDT | Severe Thunderstorm Warning | MPX | Morrison, Stearns, Todd | 38 min |
| Jul 24, 1:46 AM CDT | Special Weather Statement | MPX | Anoka | 44 min |
| Jul 24, 1:50 AM CDT | Special Weather Statement | MPX | Douglas, Todd | 40 min |
| Jul 24, 2:03 AM CDT | Severe Thunderstorm Warning | MPX | Chisago, Washington | 25 min |
| Jul 24, 2:16 AM CDT | Special Weather Statement | MPX | Benton, Mille Lacs | 44 min |
| Jul 24, 2:19 AM CDT | Special Weather Statement | MPX | Morrison | 26 min |
| Jul 24, 3:06 AM CDT | Special Weather Statement | MPX | Kanabec | 24 min |
| Jul 24, 2:32 AM CDT | Special Weather Statement | MPX | Polk | 43 min |
Nearby
Special Weather Statements in Minnesota, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.