Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 123, NWS Twin Cities, MN

June 20, 2007Meeker County, Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2007, 5:24 PM CDT for Meeker County, Wright County, Minnesota. It was in force for 66 min. 1 report 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: Jun 20, 2007, 5:24 PM CDT (22:24 UTC)
Expired: Jun 20, 2007, 6:30 PM CDT
In force: 66 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Meeker County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 62 km from the middle of the area, began a volume at 22:27 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
Jun 20, 5:40 PM CDT	HAIL 0.75	4 Sw South Haven, MN

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.

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.4 hours before the alert went out and 338 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: 952 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 207 m²/s²
0-3 km storm-relative helicity: 215 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 202224
SVRMPX
MNC093-171-202330-
/O.NEW.KMPX.SV.W.0123.070620T2224Z-070620T2330Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WRIGHT COUNTY IN CENTRAL MINNESOTA...
  MEEKER COUNTY IN CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 518 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 15 MILES NORTHWEST OF
  ANNANDALE...OR ABOUT 17 MILES SOUTHWEST OF ST CLOUD...AND MOVING
  SOUTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ANNANDALE...
  COKATO...
  BUFFALO...

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.

LAT...LON 4528 9403 4532 9410 4528 9425 4529 9449
      4505 9425 4519 9369

$$

KAT

3 follow-up statements

000 
WWUS53 KMPX 202236
SVSMPX

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

MNC093-171-202330-
/O.CON.KMPX.SV.W.0123.000000T0000Z-070620T2330Z/
WRIGHT MN-MEEKER MN-
536 PM CDT WED JUN 20 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR MEEKER AND WRIGHT COUNTIES...

AT 532 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE 
THUNDERSTORM...CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND 60 MPH 
WINDS. THIS STORM WAS LOCATED 7 MILES NORTH OF KINGSTON...OR ABOUT 
OVER WATKINS...AND MOVING SOUTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE RASSAT...MAPLE LAKE...
KINGSTON...COKATO...BUFFALO AND ANNANDALE.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

LAT...LON 4528 9403 4532 9410 4528 9425 4529 9449
      4505 9425 4519 9369

$$

KAT

000 
WWUS53 KMPX 202246
SVSMPX

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

MNC093-171-202330-
/O.CON.KMPX.SV.W.0123.000000T0000Z-070620T2330Z/
WRIGHT MN-MEEKER MN-
546 PM CDT WED JUN 20 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR MEEKER AND WRIGHT COUNTIES...

AT 544 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE 
THUNDERSTORM...CAPABLE OF PRODUCING BASEBALL SIZE HAIL AND 65 MPH 
WINDS.  THIS STORM WAS LOCATED 6 MILES NORTHEAST OF KINGSTON...OR 
ABOUT 6 MILES WEST OF ANNANDALE...AND MOVING SOUTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE RASSAT...MAPLE LAKE...
KINGSTON...COKATO...BUFFALO AND ANNANDALE.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND VERY 
LARGE DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND 
STAY AWAY FROM WINDOWS

LAT...LON 4528 9403 4532 9410 4528 9425 4529 9449
      4505 9425 4519 9369

$$

KAT

000 
WWUS53 KMPX 202254
SVSMPX

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

MNC093-171-202330-
/O.CON.KMPX.SV.W.0123.000000T0000Z-070620T2330Z/
WRIGHT MN-MEEKER MN-
553 PM CDT WED JUN 20 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR MEEKER AND WRIGHT COUNTIES...

AT 548 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE 
THUNDERSTORM...CAPABLE OF PRODUCING BASEBALL SIZE HAIL AND 65 MPH 
WINDS. THIS STORM WAS LOCATED 4 MILES SOUTHWEST OF ANNANDALE...OR 
ABOUT OVER ANNANDALE...AND MOVING SOUTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE RASSAT...MAPLE LAKE...
KINGSTON...COKATO...BUFFALO AND ANNANDALE.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

THIS STORM HAS A HISTORY OF PRODUCING VERY LARGE...DAMAGING HAIL. 
SEEK SHELTER IMMEDIATELY

LAT...LON 4528 9403 4532 9410 4528 9425 4529 9449
      4505 9425 4519 9369

$$

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, 5:32 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, 6:11 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs, Sherburne	34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.