Alert archive / Minnesota / Mesoscale Discussions in 2022

Mesoscale Discussion 698

May 9, 202213 counties in Minnesota; 8 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 9, 2022, 9:16 AM CDT for 13 counties in Minnesota; 8 counties in Wisconsin. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: May 9, 2022, 9:16 AM CDT (14:16 UTC)
Expired: May 9, 2022, 10:15 AM CDT
In force: 59 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 192

All 21 counties

Anoka County, MN, Benton County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Sherburne County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Burnett County, WI, Dunn County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Washburn County, WI

The radar

The Minneapolis radar (KMPX), 118 km from the middle of the area, began a volume at 14:16 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 193May 9, 9:25 AM CDT

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 2.3 hours before the alert went out and 120 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: 892 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 364 m²/s²
0-3 km storm-relative helicity: 413 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 5:12 AM CDT	Mesoscale Discussion	SPC	Benton, Big Stone, Chippewa, Douglas, Grant, Kandiyohi and 19 more	63 min
May 9, 7:14 AM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Chippewa, Douglas, Grant, Hennepin and 17 more	91 min
May 9, 7:55 AM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Anoka, Benton, Carver, Chisago, Crow Wing and 22 more	4 hr
May 9, 9:28 AM CDT	Severe Thunderstorm Watch	SPC	Washington	3 hr
May 9, 1:54 PM CDT	Mesoscale Discussion	SPC	Anoka, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 30 more	96 min
May 9, 2:50 PM CDT	Tornado Watch	SPC	Aitkin, Anoka, Benton, Blue Earth, Carver, Chisago and 32 more	7 hr
May 9, 5:21 PM CDT	Mesoscale Discussion	SPC	Chisago, Dakota, Dodge, Goodhue, Olmsted, Pine and 3 more	84 min
May 9, 6:15 PM CDT	Mesoscale Discussion	SPC	Itasca, Koochiching	90 min
May 9, 11:58 AM CDT	Mesoscale Discussion	SPC	Iron, Sawyer, Vilas	62 min
May 9, 6:32 PM CDT	Mesoscale Discussion	SPC	Crawford, Grant	88 min

Nearby

Mesoscale Discussions in Minnesota, 2022 Mesoscale Discussions in Wisconsin, 2022 Every mesoscale discussion in 2022

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.