Alert archive / Missouri / Special Weather Statements in 2018

Special Weather Statement, NWS St. Louis, MO

October 7, 2018Osage County, Missouri

NWS St. Louis, MO issued this special weather statement at Oct 7, 2018, 8:20 PM CDT for Osage County, Missouri. It was in force for 40 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: Oct 7, 2018, 8:20 PM CDT (01:20 UTC)
Expired: Oct 7, 2018, 9:00 PM CDT
In force: 40 min
Issued by: NWS St. Louis, MO

County Osage County, MO

The radar

The St Louis radar (KLSX), 117 km from the middle of the area, began a volume at 01:21 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

Topeka, KS (KFOE), launched 00:00Z, 1.3 hours before the alert went out and 322 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: 463 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 159 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 Oct 7, 6:35 PM CDT, 1 hour 45 minutes earlier.

Area forecast discussion, Oct 7, 6:35 PM CDT, 1 hour 45 minutes before

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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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Hazardous weather outlook, Oct 7, 3:53 PM CDT, 4 hours 27 minutes before

Hazardous Weather Outlook
National Weather Service Saint Louis MO
353 PM CDT Sun Oct 7 2018

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-081200-
Adams IL-Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO-
Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO-Gasconade MO-
Greene IL-Iron MO-Jefferson MO-Jersey IL-Knox MO-Lewis MO-Lincoln MO-
Macoupin IL-Madison IL-Madison MO-Marion IL-Marion MO-Moniteau MO-
Monroe IL-Monroe MO-Montgomery IL-Montgomery MO-Osage MO-Pike IL-
Pike MO-Ralls MO-Randolph IL-Reynolds MO-Saint Charles MO-
Saint Clair IL-Saint Francois MO-Saint Louis City MO-Saint Louis MO-
Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO-
353 PM CDT Sun Oct 7 2018

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Tonight.

Thunderstorms are likely through this evening. A few of these storms
may be severe through early evening. The main threats will be
damaging winds to 60 mph, large hail and localized flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a chance for a few strong to severe thunderstorms again on
Tuesday, especially Tuesday night. The main threat will be damaging
winds to 60 mph. The chance for thunderstorms will persist through
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through this evening.

Byrd

In the hours before

Local storm report, Oct 7, 6:05 PM CDT, 2 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
605 PM CDT SUN OCT 7 2018

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

0456 PM     HEAVY RAIN       LAKE MYKEE              38.68N 92.10W
10/07/2018  M2.97 INCH       CALLAWAY           MO   TRAINED SPOTTER

            STORM TOTAL SO FAR.

&&

MAB

Local storm report, Oct 7, 6:20 PM CDT, 2 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
620 PM CDT SUN OCT 7 2018

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

0600 PM     HEAVY RAIN       3 NNW TAOS              38.54N 92.10W
10/07/2018  M4.50 INCH       COLE               MO   AMATEUR RADIO

            STORM TOTAL SO FAR.

&&

MAB

Special weather statement, Oct 7, 6:41 PM CDT, 1 hour 39 minutes before

Special Weather Statement
National Weather Service St Louis MO
641 PM CDT SUN OCT 7 2018

MOZ042-049>051-059-080030-
Montgomery MO-Gasconade MO-Audrain MO-Osage MO-Callaway MO-
641 PM CDT SUN OCT 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN AUDRAIN...
MONTGOMERY...NORTHEASTERN CALLAWAY...NORTHEASTERN OSAGE AND NORTHERN
GASCONADE COUNTIES UNTIL 730 PM CDT...

At 641 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Wellsville to 6 miles southeast of Chamois.
Movement was northeast at 30 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Montgomery City, Hermann, Wellsville, New Florence, Jonesburg,
Bellflower, Martinsburg, Buell, Big Spring, Mineola, Gasconade, High
Hill, Middletown, Rhineland, Morrison, McKittrick, Danville, Americus
and Portland.

This includes Interstate 70 in Missouri between exits 170 and 183.

This also includes  Deutschheim Historic Site and Graham Cave State
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3911 9168 3918 9142 3914 9141 3914 9126
      3885 9126 3884 9142 3871 9142 3870 9137
      3864 9137 3858 9173
TIME...MOT...LOC 2341Z 242DEG 28KT 3908 9160 3860 9169

Carney

Local storm report, Oct 7, 7:17 PM CDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
717 PM CDT SUN OCT 7 2018

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

0715 PM     HEAVY RAIN       MONTGOMERY CITY         38.98N 91.51W
10/07/2018  M3.20 INCH       MONTGOMERY         MO   TRAINED SPOTTER

            TOTAL SO FAR, STILL RAINING.

&&

CARNEY

Local storm report, Oct 7, 7:18 PM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
718 PM CDT SUN OCT 7 2018

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

0717 PM     HEAVY RAIN       2 NW SAINT PETERS       38.80N 90.62W
10/07/2018  E1.75 INCH       ST. CHARLES        MO   TRAINED SPOTTER

&&

CARNEY

Special weather statement, Oct 7, 8:20 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service St Louis MO
820 PM CDT SUN OCT 7 2018

MOZ049-080200-
Osage MO-
820 PM CDT SUN OCT 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN OSAGE COUNTY UNTIL 900
PM CDT...

At 820 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles west of Freeburg, moving north at 20 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Linn, Freeburg, Westphalia, Rich Fountain, Argyle, Koeltztown, Loose
Creek and Bonnots Mill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3847 9206 3847 9204 3849 9201 3851 9201
      3852 9202 3859 9198 3853 9169 3829 9190
      3829 9217
TIME...MOT...LOC 0120Z 199DEG 17KT 3829 9206

Carney

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 7, 8:42 PM CDT	River Flood Warning	LSX	Lewis	47 hr
Oct 7, 8:42 PM CDT	River Flood Warning	LSX	Lewis	68 hr
Oct 7, 10:20 PM CDT	Areal Flood Advisory	LSX	Boone, Moniteau	5 hr
Oct 8, 10:09 AM CDT	River Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	8 days
Oct 8, 10:09 AM CDT	River Flood Warning	LSX	Callaway, Osage	10 days
Oct 8, 10:09 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	10 days
Oct 8, 10:09 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	10 days
Oct 8, 11:36 AM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	17 days
Oct 8, 12:20 PM CDT	River Flood Warning	LSX	Saint Charles	18 days
Oct 8, 12:20 PM CDT	River Flood Warning	LSX	Saint Louis, City of Saint Louis	13 days
Oct 8, 12:20 PM CDT	River Flood Warning	LSX	Perry, Sainte Genevieve	21 days
Oct 7, 9:39 PM CDT	River Flood Warning	LSX	Calhoun, Greene, Jersey	21 days

Nearby

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.