Alert archive / Illinois / Special Weather Statements in 2018

Special Weather Statement, NWS Quad Cities, IA

July 5, 2018Hancock County, McDonough County, Illinois; Clark County, Scotland County, Missouri

NWS Quad Cities, IA issued this special weather statement at Jul 5, 2018, 1:15 PM CDT for Hancock County, McDonough County, Illinois; Clark County, Scotland County, Missouri. It was in force for 60 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 5, 2018, 1:15 PM CDT (18:15 UTC)
Expired: Jul 5, 2018, 2:15 PM CDT
In force: 60 min
Issued by: NWS Quad Cities, IA

Counties Hancock County, IL, McDonough County, IL, Clark County, MO, Scotland County, MO

The radar

The Quad Cities radar (KDVN), 154 km from the middle of the area, began a volume at 18:15 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

Lincoln, IL (KILX), launched 12:00Z, 6.3 hours before the alert went out and 242 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: 2343 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1116 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 38 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 Quad Cities, IA wrote its last area forecast discussion before this special weather statement went out at Jul 5, 12:52 PM CDT, 23 minutes earlier.

Area forecast discussion, Jul 5, 12:52 PM CDT, 23 minutes before

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Hazardous weather outlook, Jul 5, 3:13 AM CDT, 10 hours 2 minutes before

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In the hours before

Local storm report, Jul 5, 7:39 AM CDT, 5 hours 36 minutes before

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Special weather statement, Jul 5, 1:09 PM CDT, 6 minutes before

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Special weather statement, Jul 5, 1:15 PM CDT, 0 minutes before

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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 2:28 AM CDT	Heat Advisory	DVN	Des Moines, Lee	17 hr
Jul 5, 5:29 AM CDT	Special Weather Statement	DVN	Des Moines	91 min
Jul 4, 7:48 PM CDT	Special Weather Statement	DVN	Bureau	27 min
Jul 4, 8:22 PM CDT	Flash Flood Warning	DVN	Bureau	71 min
Jul 4, 8:58 PM CDT	Special Weather Statement	DVN	Putnam	47 min
Jul 5, 2:07 PM CDT	Special Weather Statement	DVN	Hancock, McDonough	53 min
Jul 5, 2:56 PM CDT	Special Weather Statement	DVN	McDonough	34 min

Nearby

Special Weather Statements in Illinois, 2018 Special Weather Statements in Missouri, 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.