Alert archive / Iowa / Special Weather Statements in 2018

Special Weather Statement, NWS Des Moines, IA

June 21, 2018Kossuth County, Iowa

NWS Des Moines, IA issued this special weather statement at Jun 21, 2018, 6:12 AM CDT for Kossuth County, Iowa. It was in force for 48 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 21, 2018, 6:12 AM CDT (11:12 UTC)
Expired: Jun 21, 2018, 7:00 AM CDT
In force: 48 min
Issued by: NWS Des Moines, IA

County Kossuth County, IA

The radar

The Des Moines radar (KDMX), 169 km from the middle of the area, began a volume at 11:13 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, 11.2 hours before the alert went out and 189 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: 1508 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Des Moines, IA wrote its last area forecast discussion before this special weather statement went out at Jun 21, 4:24 AM CDT, 1 hour 48 minutes earlier.

Area forecast discussion, Jun 21, 4:24 AM CDT, 1 hour 48 minutes before

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Hazardous weather outlook, Jun 21, 5:40 AM CDT, 32 minutes before

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In the hours before

Local storm report, Jun 21, 2:39 AM CDT, 3 hours 33 minutes before

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Local storm report, Jun 21, 2:46 AM CDT, 3 hours 26 minutes before

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Special weather statement, Jun 21, 6:12 AM CDT, 0 minutes before

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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 9:06 PM CDT	River Flood Warning	DMX	Palo Alto, Pocahontas	29 days
Jun 20, 9:07 PM CDT	River Flood Warning	DMX	Humboldt	32 days
Jun 20, 9:09 PM CDT	River Flood Watch	DMX	Humboldt, Kossuth	13 hr
Jun 20, 9:22 PM CDT	River Flood Watch	DMX	Wright	5 days
Jun 20, 9:58 PM CDT	Flash Flood Warning	DMX	Kossuth, Palo Alto	6 hr
Jun 20, 10:13 PM CDT	Areal Flood Warning	DMX	Humboldt, Kossuth	14 hr
Jun 21, 2:36 AM CDT	Areal Flood Warning	DMX	Kossuth, Palo Alto	9 hr
Jun 21, 10:10 AM CDT	River Flood Warning	DMX	Humboldt, Kossuth	10 days
Jun 21, 10:39 AM CDT	River Flood Watch	DMX	Cerro Gordo, Floyd, Worth	62 hr
Jun 21, 11:20 AM CDT	Special Weather Statement	DMX	Black Hawk, Grundy, Poweshiek, Tama	3 hr

Nearby

Special Weather Statements in Iowa, 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.