Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 202, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 20, 2017, 1:49 AM CDT for 4 counties in Minnesota. It was in force for 56 min. 2 reports 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
- Sep 20, 2017, 1:49 AM CDT (06:49 UTC)
- Expired
- Sep 20, 2017, 2:45 AM CDT
- In force
- 56 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Benton County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN
The radar
The Minneapolis radar (KMPX), 128 km from the middle of the area, began a volume at 06:55 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 |
|---|---|---|---|
| Sep 20, 1:55 AM CDT | TSTM WND DMG | 2 Nnw Vineland, MN | TREES DOWN ON POWER LINES. |
| Sep 20, 2:02 AM CDT | HAIL 1.75 | 3 Nnw Vineland, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 19, 10:36 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 20, 1:22 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 6.8 hours before the alert went out and 128 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
- 246 J/kg
- Mixed-layer CIN
- -155 J/kg
- Mixed-layer LCL
- 1179 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 274 m²/s²
- 0-3 km storm-relative helicity
- 454 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.2
The text
As transmitted.
668
WUUS53 KMPX 200649
SVRMPX
MNC009-065-095-097-200745-
/O.NEW.KMPX.SV.W.0202.170920T0649Z-170920T0745Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
149 AM CDT WED SEP 20 2017
The National Weather Service in The Twin Cities has issued a
* Severe Thunderstorm Warning for...
Kanabec County in east central Minnesota...
Mille Lacs County in east central Minnesota...
Northeastern Benton County in central Minnesota...
East central Morrison County in central Minnesota...
* Until 245 AM CDT
* At 148 AM CDT, severe thunderstorms were located along a line
extending from near Erskin Lake to Granite Ledge to Parent, moving
northeast at 60 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near,
Vineland around 155 AM CDT.
Foreston around 205 AM CDT.
Mille Lacs Lake and Milaca around 210 AM CDT.
Bock around 215 AM CDT.
Ogilvie around 220 AM CDT.
Mora and Brunswick around 225 AM CDT.
Quamba around 235 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4625 9344 4615 9343 4615 9306 4598 9306
4598 9314 4573 9315 4573 9351 4572 9352
4569 9392 4580 9385 4616 9396 4616 9381
4624 9381
TIME...MOT...LOC 0648Z 241DEG 53KT 4614 9387 4582 9388 4563 9401
HAIL...0.88IN
WIND...60MPH
$$2 follow-up statements
993
WWUS53 KMPX 200719
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
219 AM CDT WED SEP 20 2017
MNC009-065-095-097-200745-
/O.CON.KMPX.SV.W.0202.000000T0000Z-170920T0745Z/
Kanabec MN-Mille Lacs MN-Benton MN-Morrison MN-
219 AM CDT WED SEP 20 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR KANABEC...MILLE LACS...NORTHEASTERN BENTON AND EASTERN MORRISON
COUNTIES...
At 218 AM CDT, severe thunderstorms were located along a line
extending from near Dads Corner to near Warman to near Ogilvie,
moving northeast at 60 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
These severe storms will be near...
Quamba around 235 AM CDT.
Other locations impacted by these severe thunderstorms include Knife
Lake, Rum River, Warman, Lewis Lake and Bayview.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4625 9344 4615 9343 4615 9306 4598 9306
4598 9314 4573 9315 4573 9351 4572 9352
4570 9391 4580 9385 4592 9389 4610 9368
4625 9356
TIME...MOT...LOC 0718Z 242DEG 52KT 4635 9332 4603 9333 4584 9346
HAIL...1.00IN
WIND...60MPH
$$007
WWUS53 KMPX 200739
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
239 AM CDT WED SEP 20 2017
MNC009-065-095-097-200749-
/O.EXP.KMPX.SV.W.0202.000000T0000Z-170920T0745Z/
Kanabec MN-Mille Lacs MN-Benton MN-Morrison MN-
239 AM CDT WED SEP 20 2017
...THE SEVERE THUNDERSTORM WARNING FOR KANABEC...MILLE LACS...
NORTHEASTERN BENTON AND EASTERN MORRISON COUNTIES WILL EXPIRE AT 245
AM CDT...
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire. However gusty winds
and heavy rain are still possible with these thunderstorms.
A severe thunderstorm watch remains in effect until 500 AM CDT for
central Minnesota. A severe thunderstorm watch also remains in effect
until 500 AM CDT for east central Minnesota.
LAT...LON 4625 9344 4615 9343 4615 9306 4598 9306
4598 9314 4573 9315 4573 9351 4572 9352
4570 9391 4580 9385 4592 9389 4610 9368
4625 9356
TIME...MOT...LOC 0739Z 241DEG 53KT 4649 9295 4617 9297 4598 9310
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 10:55 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 50 min |
| Sep 19, 11:24 PM CDT | Severe Thunderstorm Warning | MPX | Stevens, Swift | 36 min |
| Sep 19, 11:42 PM CDT | Special Weather Statement | MPX | Lac qui Parle, Yellow Medicine | 48 min |
| Sep 19, 11:50 PM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stevens | 55 min |
| Sep 20, 12:03 AM CDT | Special Weather Statement | MPX | Swift | 57 min |
| Sep 20, 12:06 AM CDT | Special Weather Statement | MPX | Meeker | 24 min |
| Sep 20, 12:16 AM CDT | Special Weather Statement | MPX | Chippewa, Yellow Medicine | 44 min |
| Sep 20, 12:24 AM CDT | Severe Thunderstorm Warning | MPX | Swift | 21 min |
| Sep 20, 12:42 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Pope, Stearns, Todd | 33 min |
| Sep 20, 12:45 AM CDT | Special Weather Statement | MPX | Benton, Morrison | 45 min |
| Sep 20, 12:51 AM CDT | Special Weather Statement | MPX | Kandiyohi, Meeker, Renville | 39 min |
| Sep 20, 12:55 AM CDT | Special Weather Statement | MPX | Brown, Redwood | 35 min |
| Sep 20, 1:02 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker, Renville | 43 min |
| Sep 20, 1:11 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Morrison, Sherburne, Stearns | 49 min |
| Sep 20, 1:15 AM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet, Redwood, Renville, Sibley | 30 min |
| Sep 20, 1:37 AM CDT | Severe Thunderstorm Warning | MPX | Meeker, Sherburne, Stearns, Wright | 38 min |
| Sep 20, 1:41 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville, Sibley | 34 min |
| Sep 20, 2:00 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Isanti, Mille Lacs, Sherburne | 45 min |
| Sep 20, 2:12 AM CDT | Special Weather Statement | MPX | Anoka, Hennepin, Wright | 48 min |
| Sep 20, 2:36 AM CDT | Special Weather Statement | MPX | Hennepin, Ramsey, Washington | 69 min |
| Sep 20, 2:57 AM CDT | Special Weather Statement | MPX | Chisago | 33 min |
| Sep 20, 3:04 AM CDT | Severe Thunderstorm Warning | MPX | Chisago | 26 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2017Every severe thunderstorm warning in 2017
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.