Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 72, NWS Twin Cities, MN

May 31, 2008Kanabec County, Mille Lacs County, Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 2008, 4:43 PM CDT for Kanabec County, Mille Lacs County, Morrison County, Minnesota. It was in force for 62 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 31, 2008, 4:43 PM CDT (21:43 UTC)
Expired
May 31, 2008, 5:45 PM CDT
In force
62 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN

The radar

The Duluth radar (KDLH), 133 km from the middle of the area, began a volume at 22:04 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

TimeReportWhereRemark
May 31, 4:55 PM CDTHAIL 0.759 N Hillman, MNHAIL BEGAN AT 0.75 THEN DECREASED TO PEA SIZE. IT LASTED ABOUT TEN MINUTES.
May 31, 5:00 PM CDTHAIL 0.54 Ssw Vineland, MNHAIL CAME DOWN IN SHEETS AND COVERED THE GROUND. GARDEN LOST. HAIL STILL ON GROUND IN DRIFTS THREE HOURS LATER.

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.

IssuedProductOfficeLasted
May 31, 2:51 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.7 hours before the alert went out and 140 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 2008-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 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 2008-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
16 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
722 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMPX 312143
SVRMPX
MNC065-095-097-312245-
/O.NEW.KMPX.SV.W.0072.080531T2143Z-080531T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
443 PM CDT SAT MAY 31 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL MORRISON COUNTY IN CENTRAL MINNESOTA...
  NORTHERN MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN KANABEC COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 545 PM CDT

* AT 438 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 65 MPH.  THIS STORM WAS LOCATED 15 MILES NORTHWEST OF ONAMIA...
  OR ABOUT 8 MILES SOUTHWEST OF GARRISON...AND MOVING SOUTHEAST AT 31
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  ONAMIA...
  ISLE...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
SATURDAY EVENING FOR SOUTHERN MINNESOTA.

LAT...LON 4590 9314 4587 9367 4615 9401 4617 9395
      4617 9384 4622 9383 4624 9380 4623 9343
      4616 9343 4615 9314
TIME...MOT...LOC 2143Z 305DEG 27KT 4618 9387

$$

MDB
1 follow-up statement
000 
WWUS53 KMPX 312235
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
535 PM CDT SAT MAY 31 2008

MNC097-312245-
/O.CAN.KMPX.SV.W.0072.000000T0000Z-080531T2245Z/
MORRISON MN-
535 PM CDT SAT MAY 31 2008

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MORRISON COUNTY 
IS CANCELLED BUT A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
SOUTHEASTERN MORRISON COUNTY...

DOPPLER RADAR INDICATED THAT THE SEVERE STORM HAD WEAKENED OR MOVED
OUT OF THE WARNED AREA. THEREFORE...THE SEVERE THUNDERSTORM WARNING
HAS BEEN CANCELLED.

LAT...LON 4591 9344 4587 9367 4597 9375 4601 9357
      4603 9350 4601 9345
TIME...MOT...LOC 2235Z 302DEG 23KT 4591 9354

$$

MNC065-095-312245-
/O.CON.KMPX.SV.W.0072.000000T0000Z-080531T2245Z/
MILLE LACS MN-KANABEC MN-
535 PM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR WEST CENTRAL KANABEC AND CENTRAL MILLE LACS COUNTIES...

AT 534 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS SEVERE
THUNDERSTORM WAS LOCATED OVER CENTRAL MILLE LACS COUNTY...OR ABOUT 8
MILES NORTHWEST OF OGILVIE...AND MOVING SOUTHEAST AT 27 MPH.

THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTIES.

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 4591 9344 4587 9367 4597 9375 4601 9357
      4603 9350 4601 9345
TIME...MOT...LOC 2235Z 302DEG 23KT 4591 9354

$$

MDB

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 7:09 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Waseca36 min
May 31, 2:24 PM CDTSevere Thunderstorm WarningMPXLe Sueur51 min
May 31, 3:08 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice, Steele, Waseca67 min
May 31, 4:15 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn, Steele, Waseca48 min
May 31, 4:15 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne60 min
May 31, 4:23 PM CDTSevere Thunderstorm WarningMPXMorrison67 min
May 31, 5:01 PM CDTSevere Thunderstorm WarningMPXSherburne, Wright59 min
May 31, 5:16 PM CDTTornado WarningMPXSherburne, Wright44 min
May 31, 5:25 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Ramsey65 min
May 31, 5:28 PM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs, Morrison62 min
May 31, 5:38 PM CDTTornado WarningMPXHennepin, Wright40 min
May 31, 6:17 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti58 min
May 31, 6:26 PM CDTSevere Thunderstorm WarningMPXDakota, Hennepin, Ramsey, Scott50 min
May 31, 6:44 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs, Morrison46 min
May 31, 6:45 PM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Washington45 min
May 31, 6:55 PM CDTTornado WarningMPXAnoka, Chisago, Washington50 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2008Every severe thunderstorm warning in 2008

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.