Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 29, NWS Twin Cities, MN

May 28, 20186 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 28, 2018, 5:29 PM CDT for 6 counties in Minnesota. It was in force for 31 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
May 28, 2018, 5:29 PM CDT (22:29 UTC)
Expired
May 28, 2018, 6:00 PM CDT
In force
31 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Anoka County, MN, Hennepin County, MN, Ramsey County, MN, Sherburne County, MN, Washington County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 52 km from the middle of the area, began a volume at 22:28 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

TimeReportWhereRemark
May 28, 5:47 PM CDTTSTM WND DMG3 Nw Lino Lakes, MNNUMEROUS LARGE TREES...UP TO 70 INCH DIAMETER DOWN AT THIS INTERSECTION IN A UNIDIRECTIONAL FASHION. SPOTTY POWER OUTAGES. REPORTED AT 125TH AVE NE, HARPER ST, LINO LAKES, MN.
May 28, 5:57 PM CDTTSTM WND DMG3 Ne Blaine, MNNUMEROUS LARGE TREES DOWN AND INTERTWINED IN LIVE POWER LINES. REPORTED AT 128TH AND HARPER ST, BLAINE, MN.

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, 10.5 hours before the alert went out and 54 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2018-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 367 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2018-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
367 J/kg
Mixed-layer CIN
-293 J/kg
Mixed-layer LCL
2678 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

939 
WUUS53 KMPX 282229
SVRMPX
MNC003-053-123-141-163-171-282300-
/O.NEW.KMPX.SV.W.0029.180528T2229Z-180528T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
529 PM CDT MON MAY 28 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  East central Wright County in central Minnesota...
  Northern Hennepin County in east central Minnesota...
  Anoka County in east central Minnesota...
  Southeastern Sherburne County in central Minnesota...
  Northwestern Washington County in east central Minnesota...
  Northern Ramsey County in east central Minnesota...

* Until 600 PM CDT

* At 528 PM CDT, a severe thunderstorm was located over Blaine, or 15
  miles north of Minneapolis, moving north at 25 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. 

* This severe thunderstorm will be near,
  Ham Lake around 545 PM CDT. 
  Forest Lake and East Bethel around 600 PM CDT. 

Other locations impacted by this severe thunderstorm include Nowthen,
Hanover, Willernie, Hilltop, Cedar, Circle Pines, Dayton, Lexington,
Pine Springs and Osseo.

This includes the following highways...
 Interstate 35 between mile markers 130 and 132.
 Interstate 94 in Minnesota between mile markers 199 and 205.
 U.S. Highway 10 in Minnesota between mile markers 206 and 217.
 U.S. Highway 169 between mile markers 159 and 162.
 U.S. Highway 8 in Minnesota between mile markers 0 and 1.

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 4533 9302 4529 9302 4529 9292 4502 9291
      4504 9375 4536 9370
TIME...MOT...LOC 2228Z 199DEG 22KT 4518 9322 

HAIL...1.00IN
WIND...60MPH
 
$$

ETA
1 follow-up statement
453 
WWUS53 KMPX 282253
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
553 PM CDT MON MAY 28 2018

MNC053-123-163-171-282303-
/O.CAN.KMPX.SV.W.0029.000000T0000Z-180528T2300Z/
Wright MN-Hennepin MN-Washington MN-Ramsey MN-
553 PM CDT MON MAY 28 2018

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WRIGHT...NORTHERN
HENNEPIN...NORTHWESTERN WASHINGTON AND NORTHERN RAMSEY COUNTIES IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4533 9302 4513 9302 4512 9322 4504 9323
      4504 9328 4510 9327 4521 9342 4524 9352
      4530 9357 4529 9358 4530 9370 4536 9370
TIME...MOT...LOC 2253Z 199DEG 22KT 4533 9315 

$$

MNC003-141-282300-
/O.CON.KMPX.SV.W.0029.000000T0000Z-180528T2300Z/
Anoka MN-Sherburne MN-
553 PM CDT MON MAY 28 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR ANOKA AND SOUTHEASTERN SHERBURNE COUNTIES...

At 553 PM CDT, a severe thunderstorm was located over East Bethel, or
15 miles south of Cambridge, moving north at 25 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts. 

SOURCE...Trained weather spotters. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

this severe thunderstorm will remain over mainly rural areas of Anoka
and southeastern Sherburne Counties, including the following
locations: Nowthen, Blaine Airport, Hilltop, Oak Grove, Cedar, Circle
Pines, Lexington and Centerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4533 9302 4513 9302 4512 9322 4504 9323
      4504 9328 4510 9327 4521 9342 4524 9352
      4530 9357 4529 9358 4530 9370 4536 9370
TIME...MOT...LOC 2253Z 199DEG 22KT 4533 9315 

HAIL...1.75IN
WIND...60MPH
 
$$

ETA

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 28, 3:50 AM CDTExcessive Heat WarningMPXAnoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more15 hr
May 28, 6:19 AM CDTSpecial Weather StatementMPXTodd56 min
May 28, 2:15 PM CDTSpecial Weather StatementMPXFaribault30 min
May 28, 3:10 PM CDTSpecial Weather StatementMPXLe Sueur35 min
May 28, 3:39 PM CDTSpecial Weather StatementMPXCarver, Scott66 min
May 28, 3:54 PM CDTSpecial Weather StatementMPXNicollet, Sibley36 min
May 28, 4:03 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin, Scott27 min
May 28, 4:10 PM CDTSpecial Weather StatementMPXNicollet35 min
May 28, 4:14 PM CDTSpecial Weather StatementMPXFaribault31 min
May 28, 4:29 PM CDTSpecial Weather StatementMPXMcLeod, Sibley46 min
May 28, 4:31 PM CDTSpecial Weather StatementMPXHennepin, Wright29 min
May 28, 4:42 PM CDTSpecial Weather StatementMPXWaseca33 min
May 28, 4:48 PM CDTSpecial Weather StatementMPXCarver, Hennepin42 min
May 28, 5:01 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Ramsey, Washington29 min
May 28, 5:04 PM CDTSevere Thunderstorm WarningMPXHennepin, Wright26 min
May 28, 5:11 PM CDTSpecial Weather StatementMPXWaseca34 min
May 28, 5:17 PM CDTSpecial Weather StatementMPXSteele28 min
May 28, 5:35 PM CDTFlash Flood WarningMPXAnoka, Hennepin, Ramsey, Sherburne, Wright94 min
May 28, 5:40 PM CDTSpecial Weather StatementMPXWaseca35 min
May 28, 5:49 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti, Sherburne26 min
May 28, 5:54 PM CDTSpecial Weather StatementMPXRamsey36 min
May 28, 5:59 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti31 min
May 28, 6:09 PM CDTSevere Thunderstorm WarningMPXIsanti, Kanabec, Mille Lacs, Sherburne51 min
May 28, 6:13 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti, Kanabec47 min
May 28, 6:13 PM CDTSevere Thunderstorm WarningMPXFreeborn48 min
May 28, 6:22 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns38 min
May 28, 6:32 PM CDTSpecial Weather StatementMPXChisago28 min
May 28, 6:56 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs34 min
May 28, 6:57 PM CDTSpecial Weather StatementMPXChisago63 min
May 28, 6:59 PM CDTSpecial Weather StatementMPXSteele46 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.