Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 144, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 2018, 7:24 AM CDT for Freeborn County, Steele County, Waseca County, Minnesota. It was in force for 34 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 31, 2018, 7:24 AM CDT (12:24 UTC)
- Expired
- Aug 31, 2018, 7:58 AM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
Counties Freeborn County, MN, Steele County, MN, Waseca County, MN
The radar
The Minneapolis radar (KMPX), 113 km from the middle of the area, began a volume at 12:27 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 31, 7:25 AM CDT | HAIL 1 | 3 S New Richland, MN | |
| Aug 31, 7:35 AM CDT | HAIL 1.25 | 4 Nnw Clarks Grove, MN | CORRECTS PREVIOUS HAIL REPORT FROM 4 NNW CLARKS GROVE. REPORTED NEAR THE INTERSECTION OF COUNTY RD 20 AND 35 IN TOWN OF BATH. CORRECTED TIME FROM 7:45 TO 7:35 AM. |
| Aug 31, 7:45 AM CDT | HAIL 1.25 | 4 Nnw Clarks Grove, MN | REPORTED NEAR THE INTERSECTION OF COUNTY RD 20 AND 35 IN TOWN OF BATH. |
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, 0.4 hours before the alert went out and 113 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
- 439 J/kg
- Mixed-layer CIN
- -302 J/kg
- Mixed-layer LCL
- 920 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
669
WUUS53 KMPX 311224
SVRMPX
MNC047-147-161-311315-
/O.NEW.KMPX.SV.W.0144.180831T1224Z-180831T1315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
724 AM CDT FRI AUG 31 2018
The National Weather Service in The Twin Cities has issued a
* Severe Thunderstorm Warning for...
Northeastern Freeborn County in south central Minnesota...
Southern Steele County in south central Minnesota...
Southeastern Waseca County in south central Minnesota...
* Until 815 AM CDT.
* At 724 AM CDT, a severe thunderstorm was located near Hartland, or
13 miles north of Albert Lea, moving east at 25 mph.
HAZARD...Ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect
damage to roofs, siding, windows, and vehicles.
* Locations impacted include...
Blooming Prairie, Clarks Grove, Ellendale, Geneva, Hartland,
Hollandale and Bixby.
This includes Interstate 35 between mile markers 18 and 29.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4388 9353 4390 9336 4394 9305 4376 9305
4373 9351
TIME...MOT...LOC 1224Z 258DEG 23KT 4384 9343
HAIL...1.50IN
WIND...<50MPH
$$3 follow-up statements
274
WWUS53 KMPX 311240
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
740 AM CDT FRI AUG 31 2018
MNC161-311249-
/O.CAN.KMPX.SV.W.0144.000000T0000Z-180831T1315Z/
Waseca MN-
740 AM CDT FRI AUG 31 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASECA COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4390 9336 4394 9305 4376 9305 4376 9335
4390 9340
TIME...MOT...LOC 1239Z 264DEG 23KT 4382 9329
$$
MNC047-147-311315-
/O.CON.KMPX.SV.W.0144.000000T0000Z-180831T1315Z/
Freeborn MN-Steele MN-
740 AM CDT FRI AUG 31 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR NORTHEASTERN FREEBORN AND SOUTHERN STEELE COUNTIES...
At 739 AM CDT, a severe thunderstorm was located over Geneva, or 12
miles north of Albert Lea, moving east at 25 mph.
HAZARD...Half dollar size hail.
SOURCE...Trained weather spotters.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Blooming Prairie, Clarks Grove, Ellendale, Geneva, Hollandale and
Bixby.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4390 9336 4394 9305 4376 9305 4376 9335
4390 9340
TIME...MOT...LOC 1239Z 264DEG 23KT 4382 9329
HAIL...1.25IN
WIND...<50MPH
$$219 WWUS53 KMPX 311254 SVSMPX Severe Weather Statement National Weather Service Twin Cities/Chanhassen MN 754 AM CDT FRI AUG 31 2018 MNC047-147-311315- /O.CON.KMPX.SV.W.0144.000000T0000Z-180831T1315Z/ Freeborn MN-Steele MN- 754 AM CDT FRI AUG 31 2018 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR NORTHEASTERN FREEBORN AND SOUTHEASTERN STEELE COUNTIES... At 754 AM CDT, a severe thunderstorm was located near Geneva, or 14 miles northeast of Albert Lea, moving east at 25 mph. HAZARD...Quarter size hail. SOURCE...Trained weather spotters. IMPACT...Damage to vehicles is expected. Locations impacted include... Blooming Prairie, Geneva and Hollandale. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4389 9326 4390 9305 4376 9305 4376 9327 TIME...MOT...LOC 1254Z 268DEG 21KT 4383 9320 HAIL...1.00IN WIND...<50MPH $$
438
WWUS53 KMPX 311258
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
758 AM CDT FRI AUG 31 2018
MNC047-147-311308-
/O.CAN.KMPX.SV.W.0144.000000T0000Z-180831T1315Z/
Freeborn MN-Steele MN-
758 AM CDT FRI AUG 31 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FREEBORN AND
SOUTHEASTERN STEELE 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.
Therefore, the warning has been cancelled.
LAT...LON 4389 9326 4390 9305 4376 9305 4376 9327
TIME...MOT...LOC 1256Z 258DEG 23KT 4384 9316
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 6:10 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Steele, Waseca | 35 min |
| Aug 31, 8:00 AM CDT | Special Weather Statement | MPX | Steele | 15 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.