Alert archive / Illinois / Special Weather Statements in 2019

Special Weather Statement, NWS St. Louis, MO

June 30, 2019Lewis County, Missouri; Adams County, Brown County, Illinois

NWS St. Louis, MO issued this special weather statement at Jun 30, 2019, 8:23 PM CDT for Lewis County, Missouri; Adams County, Brown County, Illinois. It was in force for 52 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 30, 2019, 8:23 PM CDT (01:23 UTC)
Expired: Jun 30, 2019, 9:15 PM CDT
In force: 52 min
Issued by: NWS St. Louis, MO

Counties Adams County, IL, Brown County, IL, Lewis County, MO

The radar

The Lincoln radar (KILX), 155 km from the middle of the area, began a volume at 01:26 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

Davenport, (KDVN), launched 00:00Z, 1.4 hours before the alert went out and 181 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: 2131 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1205 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.4

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 St. Louis, MO wrote its last area forecast discussion before this special weather statement went out at Jun 30, 5:54 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, Jun 30, 5:54 PM CDT, 2 hours 29 minutes before

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Hazardous weather outlook, Jun 30, 3:32 PM CDT, 4 hours 51 minutes before

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In the hours before

Special weather statement, Jun 30, 5:59 PM CDT, 2 hours 24 minutes before

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Special weather statement, Jun 30, 8:23 PM CDT, 0 minutes before

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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 1, 2:59 PM CDT	Areal Flood Advisory	LSX	City of Saint Louis	2 hr
Jul 1, 3:02 PM CDT	Special Weather Statement	LSX	Saint Louis, City of Saint Louis	43 min
Jul 1, 5:11 PM CDT	Special Weather Statement	LSX	Washington	19 min

Nearby

Special Weather Statements in Illinois, 2019 Special Weather Statements in Missouri, 2019 Every special weather statement in 2019

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.