Alert archive / Missouri / Special Weather Statements in 2017

Special Weather Statement, NWS Springfield, MO

June 15, 2017St. Clair County, Missouri

NWS Springfield, MO issued this special weather statement at Jun 15, 2017, 1:47 AM CDT for St. Clair County, Missouri. It was in force for 58 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 15, 2017, 1:47 AM CDT (06:47 UTC)
Expired: Jun 15, 2017, 2:45 AM CDT
In force: 58 min
Issued by: NWS Springfield, MO

County St. Clair County, MO

The radar

The Pleasant Hill radar (KEAX), 90 km from the middle of the area, began a volume at 06:48 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

Springfield, MO (KSGF), launched 00:00Z, 6.8 hours before the alert went out and 127 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: 2415 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1276 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

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 Springfield, MO wrote its last area forecast discussion before this special weather statement went out at Jun 14, 11:51 PM CDT, 1 hour 56 minutes earlier.

Area forecast discussion, Jun 14, 11:51 PM CDT, 1 hour 56 minutes before

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Hazardous weather outlook, Jun 15, 1:24 AM CDT, 23 minutes before

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In the hours before

Special weather statement, Jun 15, 1:17 AM CDT, 30 minutes before

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Special weather statement, Jun 15, 1:34 AM CDT, 13 minutes before

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Special weather statement, Jun 15, 1:47 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 1:17 AM CDT	Special Weather Statement	SGF	Vernon	58 min
Jun 15, 2:30 AM CDT	Areal Flood Advisory	SGF	Vernon	4 hr
Jun 15, 3:11 AM CDT	Areal Flood Advisory	SGF	Cedar	3 hr
Jun 15, 3:23 AM CDT	Special Weather Statement	SGF	Cedar, Dade, Hickory, Polk	52 min
Jun 15, 6:06 AM CDT	Areal Flood Warning	SGF	Barton, Cedar, Vernon	7 hr
Jun 15, 9:48 AM CDT	Severe Thunderstorm Warning	SGF	Stone	27 min
Jun 15, 1:34 AM CDT	Special Weather Statement	SGF	Bourbon, Crawford	56 min
Jun 15, 2:11 AM CDT	Severe Thunderstorm Warning	SGF	Bourbon	45 min

Nearby

Special Weather Statements in Missouri, 2017 Every special weather statement in 2017

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.