Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 268, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 23, 2012, 6:46 PM CDT for Kanabec County, Mille Lacs County, Minnesota. It was in force for 44 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
- Aug 23, 2012, 6:46 PM CDT (23:46 UTC)
- Expired
- Aug 23, 2012, 7:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Kanabec County, MN, Mille Lacs County, MN
The radar
The Duluth radar (KDLH), 125 km from the middle of the area, began a volume at 23:47 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 |
|---|---|---|---|
| Aug 23, 6:46 PM CDT | HAIL 1 | 9 Wnw Mora, MN | LASTED FOR ABOUT FIVE MINUTES |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 130 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2118 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
579
WUUS53 KMPX 232346
SVRMPX
MNC065-095-240045-
/O.NEW.KMPX.SV.W.0268.120823T2346Z-120824T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
646 PM CDT THU AUG 23 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN KANABEC COUNTY IN EAST CENTRAL MINNESOTA...
EASTERN MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...
* UNTIL 745 PM CDT
* AT 642 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 10 MILES WEST
OF MORA...AND MOVING NORTHEAST AT 15 MPH.
LOCATIONS IN THE WARNING INCLUDE...
WARMAN...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
&&
LAT...LON 4616 9338 4599 9305 4597 9309 4597 9313
4595 9314 4580 9349 4595 9359
TIME...MOT...LOC 2345Z 230DEG 15KT 4593 9348
WIND...HAIL <50MPH 1.00IN
$$1 follow-up statement
447
WWUS53 KMPX 240030
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
730 PM CDT THU AUG 23 2012
MNC065-095-240045-
/O.CAN.KMPX.SV.W.0268.000000T0000Z-120824T0045Z/
KANABEC MN-MILLE LACS MN-
730 PM CDT THU AUG 23 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MILLE LACS AND
NORTHERN KANABEC COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER SMALL HAIL AND HEAVY RAIN ARE STILL POSSIBLE WITH
THIS THUNDERSTORM.
LAT...LON 4616 9338 4599 9305 4597 9309 4597 9313
4595 9314 4580 9349 4595 9359
TIME...MOT...LOC 0030Z 230DEG 15KT 4605 9327
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 11:16 AM CDT | Special Weather Statement | MPX | Swift | 29 min |
| Aug 23, 11:30 AM CDT | Special Weather Statement | MPX | Swift | 45 min |
| Aug 23, 12:30 PM CDT | Special Weather Statement | MPX | Pope, Stevens, Swift | 60 min |
| Aug 23, 1:07 PM CDT | Severe Thunderstorm Warning | MPX | Pope, Stevens | 53 min |
| Aug 23, 2:49 PM CDT | Special Weather Statement | MPX | Pope | 41 min |
| Aug 23, 2:50 PM CDT | Areal Flood Advisory | MPX | Pope, Stevens, Swift | 3 hr |
| Aug 23, 5:03 PM CDT | Special Weather Statement | MPX | Wright | 27 min |
| Aug 23, 6:06 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 54 min |
| Aug 23, 6:31 PM CDT | Special Weather Statement | MPX | Isanti, Kanabec, Mille Lacs | 44 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012
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.