Alert archive / Minnesota / Special Weather Statements in 2018

Special Weather Statement, NWS Twin Cities, MN

July 25, 2018Chippewa County, Lac qui Parle County, Swift County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 25, 2018, 5:38 AM CDT for Chippewa County, Lac qui Parle County, Swift County, Minnesota. It was in force for 37 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: Jul 25, 2018, 5:38 AM CDT (10:38 UTC)
Expired: Jul 25, 2018, 6:15 AM CDT
In force: 37 min
Issued by: NWS Twin Cities, MN

Counties Chippewa County, MN, Lac qui Parle County, MN, Swift County, MN

The radar

The Sioux Falls radar (KFSD), 176 km from the middle of the area, began a volume at 10:38 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

Aberdeen, SD (KABR), launched 00:00Z, 10.6 hours before the alert went out and 201 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: 840 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1724 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 363 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 8.9

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jul 25, 2:53 AM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Jul 25, 2:53 AM CDT, 2 hours 45 minutes before

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Hazardous weather outlook, Jul 25, 3:07 AM CDT, 2 hours 31 minutes before

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In the hours before

Special weather statement, Jul 25, 5:38 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
Jul 25, 2:55 PM CDT	Special Weather Statement	MPX	Martin	35 min
Jul 25, 3:31 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	29 min
Jul 25, 3:40 PM CDT	Special Weather Statement	MPX	Redwood	35 min
Jul 25, 3:59 PM CDT	Special Weather Statement	MPX	Faribault	31 min
Jul 25, 4:02 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	28 min
Jul 25, 4:27 PM CDT	Severe Thunderstorm Warning	MPX	Watonwan	48 min
Jul 25, 4:28 PM CDT	Special Weather Statement	MPX	Anoka	32 min
Jul 25, 5:02 PM CDT	Special Weather Statement	MPX	Martin	28 min
Jul 25, 5:12 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	33 min
Jul 25, 5:34 PM CDT	Severe Thunderstorm Warning	MPX	Faribault	32 min

Nearby

Special Weather Statements in Minnesota, 2018 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.