Alert archive / Illinois / Special Weather Statements in 2017

Special Weather Statement, NWS St. Louis, MO

April 10, 2017Marion County, Illinois

NWS St. Louis, MO issued this special weather statement at Apr 10, 2017, 1:51 PM CDT for Marion County, Illinois. It was in force for 39 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: Apr 10, 2017, 1:51 PM CDT (18:51 UTC)
Expired: Apr 10, 2017, 2:30 PM CDT
In force: 39 min
Issued by: NWS St. Louis, MO

County Marion County, IL

The radar

The Evansville,IN radar (KVWX), 123 km from the middle of the area, began a volume at 18:54 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, 6.9 hours before the alert went out and 151 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: 1373 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: -63 m²/s²
0-3 km storm-relative helicity: 3 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 Apr 10, 1:45 PM CDT, 6 minutes earlier.

Area forecast discussion, Apr 10, 1:45 PM CDT, 6 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Apr 10, 4:05 AM CDT, 9 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Saint Louis MO
405 AM CDT Mon Apr 10 2017

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-111200-
Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL-
Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL-Knox MO-
Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Boone MO-
Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-
Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-
Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-
Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-
Madison MO-Reynolds MO-
405 AM CDT Mon Apr 10 2017

This hazardous weather outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Today and Tonight

Isolated severe thunderstorms are possible this afternoon and
early this evening for the Saint Louis metro area and areas to the
south and east as a cold front moves through. Large hail and
damaging winds are the main severe threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible this afternoon and early this
evening for the Saint Louis metro area and areas to the south and
east.

TES

In the hours before

Local storm report, Apr 10, 10:27 AM CDT, 3 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1027 AM CDT MON APR 10 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1025 AM     HAIL             2 WSW WELDON SPRING     38.70N 90.68W
04/10/2017  E1.00 INCH       ST. CHARLES        MO   NWS EMPLOYEE

            AT WFO ST. LOUIS.

&&

CVKING

Local storm report, Apr 10, 10:39 AM CDT, 3 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1039 AM CDT MON APR 10 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1039 AM     HAIL             SAINT CLAIR             38.36N 90.98W
04/10/2017  E0.25 INCH       FRANKLIN           MO   TRAINED SPOTTER

&&

CVKING

Local storm report, Apr 10, 10:40 AM CDT, 3 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1040 AM CDT MON APR 10 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1035 AM     HAIL             SAINT CHARLES           38.79N 90.52W
04/10/2017  E0.88 INCH       ST. CHARLES        MO   TRAINED SPOTTER

&&

Local storm report, Apr 10, 12:29 PM CDT, 1 hour 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1229 PM CDT MON APR 10 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1030 AM     HAIL             2 NE WELDON SPRING      38.74N 90.62W
04/10/2017  M1.00 INCH       ST. CHARLES        MO   PUBLIC

            VIA FACEBOOK. KISKER AND HIGHWAY 94.

&&

BYRD

Special weather statement, Apr 10, 1:34 PM CDT, 17 minutes before

Special Weather Statement
National Weather Service St Louis MO
134 PM CDT MON APR 10 2017

ILZ065-101915-
Fayette IL-
134 PM CDT MON APR 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN FAYETTE COUNTY UNTIL
215 PM CDT...

At 133 PM CDT, Doppler radar was tracking a strong thunderstorm over
Wrights Corner, moving east at 50 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
St. Elmo and Wrights Corner.

LAT...LON 3902 8893 3920 8898 3922 8891 3922 8881
      3920 8880 3904 8881
TIME...MOT...LOC 1833Z 256DEG 42KT 3913 8886

Glass

Special weather statement, Apr 10, 1:51 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service St Louis MO
151 PM CDT MON APR 10 2017

ILZ065-069-070-101930-
Marion IL-Clinton IL-Fayette IL-
151 PM CDT MON APR 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CLINTON...NORTHERN
MARION AND SOUTHERN FAYETTE COUNTIES UNTIL 230 PM CDT...

At 151 PM CDT, Doppler radar was tracking a strong thunderstorm near
Patoka, moving east at 40 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Salem, Vandalia, St. Elmo, Kinmundy, Brownstown, Patoka, Farina,
Omega, Fairman, Stephen Forbes Station, Shobonier, Avena, Tonti, La
Clede, St. Peter, Alma, Vernon, Loogootee, St. James and St. Paul.

This includes the following highways...
 Interstate 70 in Illinois between exits 61 and 76.
 Interstate 57 in Illinois between exits 127 and 135.

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 3861 8921 3898 8919 3902 8881 3891 8881
      3891 8869 3869 8870
TIME...MOT...LOC 1851Z 254DEG 35KT 3881 8907

Glass

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 3:57 AM CDT	Special Weather Statement	LSX	Shelby	48 min
Apr 10, 7:11 AM CDT	Special Weather Statement	LSX	Franklin, Gasconade, Osage, Warren	49 min
Apr 10, 9:55 AM CDT	Special Weather Statement	LSX	Saint Charles	50 min
Apr 10, 9:58 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	47 min
Apr 10, 10:29 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	26 min
Apr 10, 5:51 PM CDT	Special Weather Statement	LSX	Crawford, Washington	39 min
Apr 10, 5:56 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Washington	36 min
Apr 10, 4:55 AM CDT	Special Weather Statement	LSX	Pike	50 min
Apr 10, 1:34 PM CDT	Special Weather Statement	LSX	Fayette	41 min
Apr 10, 4:02 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	43 min
Apr 10, 6:46 PM CDT	Special Weather Statement	LSX	Montgomery	44 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.