Alert archive / Illinois / Special Weather Statements in 2018

Special Weather Statement, NWS St. Louis, MO

April 3, 2018Fayette County, Illinois

NWS St. Louis, MO issued this special weather statement at Apr 3, 2018, 10:16 AM CDT for Fayette County, Illinois. It was in force for 14 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 3, 2018, 10:16 AM CDT (15:16 UTC)
Expired: Apr 3, 2018, 10:30 AM CDT
In force: 14 min
Issued by: NWS St. Louis, MO

County Fayette County, IL

The radar

The Evansville,IN radar (KVWX), 125 km from the middle of the area, began a volume at 15:19 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, 3.3 hours before the alert went out and 139 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: 549 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 317 m²/s²
0-3 km storm-relative helicity: 346 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 3, 7:16 AM CDT, 3 hours earlier.

Area forecast discussion, Apr 3, 7:16 AM CDT, 3 hours before

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</head>
<body>
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    <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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Apr 3, 4:44 AM CDT, 5 hours 32 minutes before

Hazardous Weather Outlook
National Weather Service Saint Louis MO
444 AM CDT Tue Apr 3 2018

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-041200-
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-
444 AM CDT Tue Apr 3 2018

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

Strong to severe storms are possible this afternoon. The main
threats will be damaging winds, large hail and isolated
tornadoes.

Temperatures expected to bottom out in the mid 20s over portions
of southern Missouri tonight, so a Freezing Warning has been
issued for Reynolds, Iron and Madison counties.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Temperatures in the mid 20s over portions of southern Missouri
early Wednesday morning, so a Freezing Warning has been issued
for Reynolds, Iron and Madison counties.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon.

Byrd

In the hours before

Local storm report, Apr 3, 10:13 AM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1013 AM CDT TUE APR 3 2018

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

1009 AM     HAIL             1 W VANDALIA            38.98N 89.12W
04/03/2018  M0.50 INCH       FAYETTE            IL   TRAINED SPOTTER

            SPOTTER REPORTED HALF-INCH AND PEA SIZE HAIL
            IN VANDALIA.

&&

JAM

Local storm report, Apr 3, 10:16 AM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1016 AM CDT TUE APR 3 2018

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

1011 AM     HAIL             3 NNW SHOBONIER         38.92N 89.10W
04/03/2018  M0.75 INCH       FAYETTE            IL   TRAINED SPOTTER

            SPOTTER REPORTED DIME SIZE HAIL 5 MILES
            SOUTH OF VANDALIA.

&&

JAM

Special weather statement, Apr 3, 10:16 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service St Louis MO
1016 AM CDT TUE APR 3 2018

ILZ065-031530-
Fayette IL-
1016 AM CDT TUE APR 3 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FAYETTE COUNTY UNTIL 1030
AM CDT...

At 1016 AM CDT, trained weather spotters reported a strong
thunderstorm near Brownstown, moving east at 40 mph.

Dime size hail will be possible with this storm.

Locations impacted include...
St. Elmo, Brownstown, Avena, La Clede, St. Peter, Loogootee and St.
James.

This includes Interstate 70 in Illinois between exits 68 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3886 8908 3899 8908 3906 8880 3891 8881
      3891 8869 3887 8870
TIME...MOT...LOC 1516Z 255DEG 34KT 3894 8899

Carney

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 10:37 PM CDT	Special Weather Statement	LSX	Iron, Madison, Saint Francois	53 min
Apr 2, 11:13 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis	32 min
Apr 2, 11:16 PM CDT	Special Weather Statement	LSX	Crawford	29 min
Apr 2, 11:22 PM CDT	Special Weather Statement	LSX	Saint Charles	38 min
Apr 3, 12:02 AM CDT	Special Weather Statement	LSX	Saint Louis, City of Saint Louis	43 min
Apr 3, 12:38 AM CDT	Special Weather Statement	LSX	City of Saint Louis	52 min
Apr 3, 4:27 AM CDT	Freeze Warning	LSX	Iron, Madison, Reynolds	30 hr
Apr 3, 2:02 PM CDT	Special Weather Statement	LSX	Crawford, Washington	43 min
Apr 3, 2:20 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Washington	40 min
Apr 3, 2:37 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Iron, Washington	38 min
Apr 3, 2:51 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	39 min
Apr 3, 3:13 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	47 min
Apr 3, 3:14 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Reynolds, Saint Francois	46 min
Apr 3, 3:26 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	49 min
Apr 3, 3:46 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Reynolds	49 min
Apr 3, 3:58 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Sainte Genevieve, Saint Francois	25 min
Apr 2, 7:46 PM CDT	Special Weather Statement	LSX	Clinton, Marion	44 min
Apr 2, 11:55 PM CDT	Special Weather Statement	LSX	Clinton	50 min
Apr 3, 8:23 AM CDT	River Flood Warning	LSX	Fayette	6 days
Apr 3, 10:08 AM CDT	Flash Flood Warning	LSX	Fayette	6 hr
Apr 3, 3:21 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair	39 min

Nearby

Special Weather Statements in Illinois, 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.