Alert archive / Illinois / Special Weather Statements in 2017

Special Weather Statement, NWS St. Louis, MO

June 29, 2017Marion County, Illinois

NWS St. Louis, MO issued this special weather statement at Jun 29, 2017, 4:15 PM CDT for Marion County, Illinois. It was in force for 45 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 29, 2017, 4:15 PM CDT (21:15 UTC)
Expired: Jun 29, 2017, 5:00 PM CDT
In force: 45 min
Issued by: NWS St. Louis, MO

County Marion County, IL

The radar

The Evansville,IN radar (KVWX), 111 km from the middle of the area, began a volume at 21:15 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, 9.3 hours before the alert went out and 165 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: 1213 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: -70 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 St. Louis, MO wrote its last area forecast discussion before this special weather statement went out at Jun 29, 3:29 PM CDT, 46 minutes earlier.

Area forecast discussion, Jun 29, 3:29 PM CDT, 46 minutes before

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Hazardous weather outlook, Jun 29, 3:48 PM CDT, 27 minutes before

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In the hours before

Special weather statement, Jun 29, 1:19 PM CDT, 2 hours 56 minutes before

Special Weather Statement
National Weather Service St Louis MO
119 PM CDT THU JUN 29 2017

MOZ041-047-048-291900-
Moniteau MO-Cole MO-Boone MO-
119 PM CDT THU JUN 29 2017

...SPECIAL WEATHER STATEMENT...

At 119 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Jamestown to 6 miles northeast of
Versailles to 9 miles northwest of Laurie. Movement was east at 30
mph.

Winds in excess of 30 mph will be possible with these storms.

Locations impacted include...
Jefferson City, California, St. Martins, Russellville, Jamestown,
Clarksburg, Centertown, High Point, McGirk, Marion, Lohman,
Hartsburg, Elston, Sandy Hook, Latham, Enon, Wilton and Kliever.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3868 9267 3868 9262 3878 9257 3873 9219
      3872 9222 3871 9221 3870 9223 3867 9222
      3848 9231 3836 9240 3843 9241 3843 9262
      3856 9279
TIME...MOT...LOC 1819Z 276DEG 27KT 3876 9259 3847 9273 3831 9293

CVKING

Special weather statement, Jun 29, 1:51 PM CDT, 2 hours 24 minutes before

Special Weather Statement
National Weather Service St Louis MO
151 PM CDT THU JUN 29 2017

MOZ048-049-291930-
Cole MO-Osage MO-
151 PM CDT THU JUN 29 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL COLE AND
SOUTHWESTERN OSAGE COUNTIES UNTIL 230 PM CDT...

At 151 PM CDT, Doppler radar was tracking a strong thunderstorm near
St. Thomas, moving east at 25 mph.

Dime size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Linn, Freeburg, Westphalia, St. Thomas, Rich Fountain, Meta, Argyle,
Koeltztown and Osage Bend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3853 9186 3829 9176 3829 9219 3834 9220
      3832 9226 3834 9229 3834 9237
TIME...MOT...LOC 1851Z 250DEG 22KT 3828 9225

CVKING

Special weather statement, Jun 29, 2:23 PM CDT, 1 hour 52 minutes before

Special Weather Statement
National Weather Service St Louis MO
223 PM CDT THU JUN 29 2017

MOZ049-059-292015-
Gasconade MO-Osage MO-
223 PM CDT THU JUN 29 2017

...SIGNIFICANT WEATHER ADVISORY FOR OSAGE AND GASCONADE COUNTIES
UNTIL 315 PM CDT...

At 222 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles north of Linn to near Rich Fountain to
near Freeburg. Movement was east at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Owensville, Linn, Belle, Bland, Freeburg, Rosebud, Rich Fountain,
Swiss, Mount Sterling, Drake, Argyle, Canaan, Frankenstein, Bay and
Loose Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall and frequent cloud to ground lightning is
occurring with these storms. Lightning can strike 10 miles away from
a thunderstorm. Seek a safe shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3861 9192 3869 9137 3821 9137 3821 9164
      3829 9165 3829 9204
TIME...MOT...LOC 1922Z 264DEG 26KT 3856 9180 3841 9180 3827 9194

CVKING

Local storm report, Jun 29, 3:39 PM CDT, 36 minutes before

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Local storm report, Jun 29, 3:51 PM CDT, 24 minutes before

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Special weather statement, Jun 29, 4:15 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
Jun 28, 9:41 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Shelby	49 min
Jun 28, 10:24 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis, Marion, Shelby	23 min
Jun 29, 12:51 PM CDT	Special Weather Statement	LSX	Boone	39 min
Jun 29, 1:19 PM CDT	Special Weather Statement	LSX	Moniteau	41 min
Jun 29, 1:51 PM CDT	Special Weather Statement	LSX	Osage	39 min
Jun 29, 2:23 PM CDT	Special Weather Statement	LSX	Gasconade, Osage	52 min
Jun 29, 2:28 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade, Osage	47 min
Jun 29, 2:49 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	56 min
Jun 29, 3:22 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis	40 min
Jun 29, 12:15 AM CDT	Special Weather Statement	LSX	Pike	45 min

Nearby

Special Weather Statements in Illinois, 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.