Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 127, NWS Twin Cities, MN

June 20, 2007Mille Lacs County, Sherburne County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2007, 6:11 PM CDT for Mille Lacs County, Sherburne County, Minnesota. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 20, 2007, 6:11 PM CDT (23:11 UTC)
Expired: Jun 20, 2007, 6:45 PM CDT
In force: 34 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Mille Lacs County, MN, Sherburne County, MN

The radar

The Minneapolis radar (KMPX), 85 km from the middle of the area, began a volume at 23:14 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 20, 4:22 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 11.2 hours before the alert went out and 330 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1400 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 164 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 202311
SVRMPX
MNC095-141-210015-
/O.NEW.KMPX.SV.W.0127.070620T2311Z-070621T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
611 PM CDT WED JUN 20 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA...

* UNTIL 715 PM CDT

* AT 609 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 4 MILES WEST OF
  PRINCETON...OR ABOUT OVER PRINCETON...AND MOVING EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PRINCETON...

STAY INDOORS...AND AWAY FROM WINDOWS.

LAT...LON 4569 9372 4551 9374 4549 9351 4569 9352

$$

KAT

1 follow-up statement

000 
WWUS53 KMPX 202345
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
646 PM CDT WED JUN 20 2007

MNC095-141-202356-
/O.CAN.KMPX.SV.W.0127.000000T0000Z-070621T0015Z/
MILLE LACS MN-SHERBURNE MN-
646 PM CDT WED JUN 20 2007

...THE SEVERE THUNDERSTORM WARNING FOR SHERBURNE AND MILLE LACS
COUNTIES IS CANCELLED...

RADAR INDICATED THAT THE SEVERE THUNDERSTORM HAD MOVED OUT OF THE 
WARNED AREA. THUS THE WARNING HAS BEEN CANCELLED.

PRIOR TO MOVING OUT OF THE COUNTY...THIS STORM PRODUCED HAIL TO THE 
SIZE OF GOLF BALLS OVER PORTIONS OF MILLE LACS COUNTY.

LAT...LON 4569 9372 4551 9374 4549 9351 4569 9352

$$

KAT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 4:06 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns	54 min
Jun 20, 4:40 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti	32 min
Jun 20, 4:52 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	53 min
Jun 20, 4:55 PM CDT	Severe Thunderstorm Warning	MPX	Chisago	34 min
Jun 20, 5:16 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne	59 min
Jun 20, 5:24 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	66 min
Jun 20, 5:32 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs	43 min
Jun 20, 5:52 PM CDT	Severe Thunderstorm Warning	MPX	Isanti	53 min
Jun 20, 6:09 PM CDT	Tornado Warning	MPX	Wright	36 min
Jun 20, 6:16 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod	59 min
Jun 20, 6:21 PM CDT	Severe Thunderstorm Warning	MPX	Chisago	54 min
Jun 20, 6:24 PM CDT	Tornado Warning	MPX	Carver	51 min
Jun 20, 6:28 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	62 min
Jun 20, 6:47 PM CDT	Severe Thunderstorm Warning	MPX	Wright	26 min
Jun 20, 6:57 PM CDT	Severe Thunderstorm Warning	MPX	Scott	63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2007 Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.