Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 123, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 26, 2018, 4:03 AM CDT for 5 counties in Minnesota. It was in force for 57 min. 3 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
- Aug 26, 2018, 4:03 AM CDT (09:03 UTC)
- Expired
- Aug 26, 2018, 5:00 AM CDT
- In force
- 57 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Benton County, MN, Chisago County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN
The radar
The Minneapolis radar (KMPX), 102 km from the middle of the area, began a volume at 09:04 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 26, 4:12 AM CDT | HAIL 0.5 | Foreston, MN | |
| Aug 26, 4:30 AM CDT | HAIL 1.75 | 8 W Braham, MN | RELAYED VIA KANABEC COUNTY WARNING POINT. TIME ESTIMATED BASED ON RADAR. |
| Aug 26, 4:44 AM CDT | HAIL 1.5 | Braham, MN | QUARTER TO PING PONG BALL SIZED HAIL. VISIBLE DAMAGE TO VEHICLES. |
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 00:00Z, 9.1 hours before the alert went out and 102 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
- 50 J/kg
- Mixed-layer CIN
- -418 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
573
WUUS53 KMPX 260903
SVRMPX
MNC009-025-059-065-095-261000-
/O.NEW.KMPX.SV.W.0123.180826T0903Z-180826T1000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
403 AM CDT SUN AUG 26 2018
The National Weather Service in The Twin Cities has issued a
* Severe Thunderstorm Warning for...
Southern Kanabec County in east central Minnesota...
Northwestern Chisago County in east central Minnesota...
Southern Mille Lacs County in east central Minnesota...
Northwestern Isanti County in east central Minnesota...
East central Benton County in central Minnesota...
* Until 500 AM CDT.
* At 403 AM CDT, a severe thunderstorm was located over Foreston, or
23 miles northeast of St. Cloud, moving east at 40 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Mora, Rush City, Milaca, Foley, Brunswick, Foreston, Ogilvie,
Grasston, Quamba, Bock, Stanchfield and Dalbo.
This includes the following highways...
Interstate 35 between mile markers 158 and 162.
U.S. Highway 169 between mile markers 184 and 196.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4573 9314 4572 9287 4565 9289 4563 9396
4579 9383 4593 9314
TIME...MOT...LOC 0903Z 262DEG 36KT 4573 9376
HAIL...1.25IN
WIND...<50MPH
$$
JPC4 follow-up statements
020
WWUS53 KMPX 260923
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
423 AM CDT SUN AUG 26 2018
MNC009-260932-
/O.CAN.KMPX.SV.W.0123.000000T0000Z-180826T1000Z/
Benton MN-
423 AM CDT SUN AUG 26 2018
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BENTON COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the severe thunderstorm warning for
east central Benton county has been cancelled.
LAT...LON 4573 9314 4572 9287 4565 9289 4563 9370
4581 9371 4593 9314
TIME...MOT...LOC 0922Z 262DEG 35KT 4574 9351
$$
MNC025-059-065-095-261000-
/O.CON.KMPX.SV.W.0123.000000T0000Z-180826T1000Z/
Kanabec MN-Chisago MN-Mille Lacs MN-Isanti MN-
423 AM CDT SUN AUG 26 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR SOUTHERN KANABEC...NORTHWESTERN CHISAGO...SOUTHEASTERN MILLE LACS
AND NORTHWESTERN ISANTI COUNTIES...
At 422 AM CDT, a severe thunderstorm was located near Bock, or 19
miles northwest of Cambridge, moving east at 40 mph.
HAZARD...Half dollar size hail.
SOURCE...Public.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Mora, Rush City, Milaca, Brunswick, Foreston, Ogilvie, Grasston,
Quamba, Bock, Stanchfield, Dalbo and Pease.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
Frequent cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4573 9314 4572 9287 4565 9289 4563 9370
4581 9371 4593 9314
TIME...MOT...LOC 0922Z 262DEG 35KT 4574 9351
HAIL...1.25IN
WIND...<50MPH
$$
JPC041
WWUS53 KMPX 260936
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
436 AM CDT SUN AUG 26 2018
MNC095-260945-
/O.CAN.KMPX.SV.W.0123.000000T0000Z-180826T1000Z/
Mille Lacs MN-
436 AM CDT SUN AUG 26 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MILLE LACS COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the severe thunderstorm warning for
southeastern Mille Lacs county has been cancelled.
LAT...LON 4566 9339 4586 9341 4591 9314 4573 9314
4572 9287 4565 9289 4564 9312
TIME...MOT...LOC 0935Z 265DEG 42KT 4573 9328
$$
MNC025-059-065-261000-
/O.CON.KMPX.SV.W.0123.000000T0000Z-180826T1000Z/
Kanabec MN-Chisago MN-Isanti MN-
436 AM CDT SUN AUG 26 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR SOUTHEASTERN KANABEC...NORTHWESTERN CHISAGO AND NORTH CENTRAL
ISANTI COUNTIES...
At 435 AM CDT, a severe thunderstorm was located near Brunswick, or
13 miles north of Cambridge, moving east at 50 mph.
HAZARD...Half dollar size hail.
SOURCE...Public.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Mora, Rush City, Brunswick, Grasston, Stanchfield, Rush City Airport
and Lewis Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
Frequent cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4566 9339 4586 9341 4591 9314 4573 9314
4572 9287 4565 9289 4564 9312
TIME...MOT...LOC 0935Z 265DEG 42KT 4573 9328
HAIL...1.25IN
WIND...<50MPH
$$
JPC096
WWUS53 KMPX 260953
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
453 AM CDT SUN AUG 26 2018
MNC059-065-261002-
/O.CAN.KMPX.SV.W.0123.000000T0000Z-180826T1000Z/
Kanabec MN-Isanti MN-
453 AM CDT SUN AUG 26 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN KANABEC AND NORTH
CENTRAL ISANTI COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the severe thunderstorm warning for
southeastern Kanabec and north central Isanti counties has been
cancelled.
LAT...LON 4566 9308 4573 9308 4572 9287 4565 9289
4565 9300
TIME...MOT...LOC 0952Z 265DEG 39KT 4573 9302
$$
MNC025-261000-
/O.CON.KMPX.SV.W.0123.000000T0000Z-180826T1000Z/
Chisago MN-
453 AM CDT SUN AUG 26 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR NORTHWESTERN CHISAGO COUNTY...
At 452 AM CDT, a severe thunderstorm was located over Greely, or 7
miles south of Pine City, moving east at 45 mph.
HAZARD...Half dollar size hail.
SOURCE...Public.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Rush City and Rush City Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
Frequent cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4566 9308 4573 9308 4572 9287 4565 9289
4565 9300
TIME...MOT...LOC 0952Z 265DEG 39KT 4573 9302
HAIL...1.25IN
WIND...<50MPH
$$
JPC315
WWUS53 KMPX 261001
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
501 AM CDT SUN AUG 26 2018
MNC025-261010-
/O.EXP.KMPX.SV.W.0123.000000T0000Z-180826T1000Z/
Chisago MN-
501 AM CDT SUN AUG 26 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHISAGO COUNTY
HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the severe
thunderstorm warning for northwestern Chisago county has been
allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
The Twin Cities.
LAT...LON 4566 9308 4573 9308 4572 9287 4565 9289
4565 9300
TIME...MOT...LOC 1000Z 262DEG 36KT 4574 9291
$$
JPCThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 1:40 AM CDT | Special Weather Statement | MPX | Douglas, Pope, Stevens | 50 min |
| Aug 26, 3:21 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Morrison, Stearns | 39 min |
| Aug 26, 4:56 AM CDT | Special Weather Statement | MPX | Benton, Isanti, Kanabec, Mille Lacs, Sherburne | 64 min |
| Aug 26, 5:20 AM CDT | Severe Thunderstorm Warning | MPX | Isanti, Kanabec, Mille Lacs, Sherburne | 40 min |
| Aug 26, 5:47 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Isanti | 43 min |
| Aug 26, 6:25 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Washington | 50 min |
| Aug 26, 6:44 AM CDT | Special Weather Statement | MPX | Chisago | 31 min |
| Aug 26, 2:40 PM CDT | Special Weather Statement | MPX | Hennepin | 35 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2018Every severe thunderstorm warning in 2018
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.