Alert archive / Wisconsin / Special Weather Statements in 2009

Special Weather Statement, NWS Twin Cities, MN

June 18, 2009Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at Jun 18, 2009, 3:29 AM CDT for Saint Croix County, Wisconsin. It was in force for 61 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 18, 2009, 3:29 AM CDT (08:29 UTC)
Expired: Jun 18, 2009, 4:30 AM CDT
In force: 61 min
Issued by: NWS Twin Cities, MN

County Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 113 km from the middle of the area, began a volume at 08:32 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 8.5 hours before the alert went out and 116 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: 1471 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 751 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 350 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 12.7

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this special weather statement went out at Jun 17, 11:11 PM CDT, 4 hours 18 minutes earlier.

Area forecast discussion, Jun 17, 11:11 PM CDT, 4 hours 18 minutes before

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Hazardous weather outlook, Jun 18, 12:25 AM CDT, 3 hours 4 minutes before

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In the hours before

Local storm report, Jun 17, 9:57 PM CDT, 5 hours 32 minutes before

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Special weather statement, Jun 17, 11:08 PM CDT, 4 hours 21 minutes before

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Local storm report, Jun 17, 11:12 PM CDT, 4 hours 17 minutes before

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Local storm report, Jun 17, 11:21 PM CDT, 4 hours 8 minutes before

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Special weather statement, Jun 18, 12:19 AM CDT, 3 hours 10 minutes before

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Special weather statement, Jun 18, 3:29 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:12 PM CDT	Tornado Warning	MPX	Blue Earth, Faribault, Martin, Waseca, Watonwan	33 min
Jun 17, 7:14 PM CDT	Tornado Warning	MPX	Le Sueur, Rice	31 min
Jun 17, 7:16 PM CDT	Tornado Warning	MPX	Freeborn, Steele	44 min
Jun 17, 7:49 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice, Steele, Waseca	56 min
Jun 17, 8:04 PM CDT	Tornado Warning	MPX	Rice, Steele, Waseca	26 min
Jun 17, 8:24 PM CDT	Tornado Warning	MPX	Steele	33 min
Jun 17, 9:22 PM CDT	Special Weather Statement	MPX	Goodhue	113 min
Jun 17, 9:53 PM CDT	Special Weather Statement	MPX	Chisago, Dakota, Goodhue, Ramsey, Washington	97 min
Jun 17, 10:48 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	42 min
Jun 17, 11:08 PM CDT	Special Weather Statement	MPX	Dakota	52 min
Jun 17, 11:20 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	40 min
Jun 18, 12:55 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	50 min
Jun 18, 1:50 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	55 min
Jun 18, 2:27 PM CDT	Tornado Warning	MPX	Douglas	48 min
Jun 18, 2:37 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Todd	53 min
Jun 18, 2:54 PM CDT	Tornado Warning	MPX	Todd	51 min
Jun 18, 3:33 PM CDT	Special Weather Statement	MPX	Stearns	57 min
Jun 18, 3:41 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	64 min
Jun 18, 3:48 PM CDT	Special Weather Statement	MPX	Todd	57 min
Jun 18, 4:16 PM CDT	Special Weather Statement	MPX	Morrison	59 min
Jun 18, 4:47 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Stearns	43 min
Jun 18, 5:13 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison, Stearns	62 min
Jun 18, 6:04 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Morrison	56 min
Jun 18, 6:32 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec	58 min
Jun 18, 6:44 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	61 min

Nearby

Special Weather Statements in Wisconsin, 2009 Every special weather statement in 2009

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.