Alert archive / Missouri / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 139, NWS St. Louis, MO

June 15, 20195 counties in Missouri; Adams County, Pike County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 15, 2019, 10:43 PM CDT for 5 counties in Missouri; Adams County, Pike County, Illinois. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 15, 2019, 10:43 PM CDT (03:43 UTC)
Expired: Jun 15, 2019, 11:30 PM CDT
In force: 47 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Adams County, IL, Pike County, IL, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 127 km from the middle of the area, began a volume at 03:45 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 15, 7:07 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.7 hours before the alert went out and 234 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: 274 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1022 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 15, 5:28 PM CDT, 5 hours 15 minutes earlier.

Area forecast discussion, Jun 15, 5:28 PM CDT, 5 hours 15 minutes before

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Hazardous weather outlook, Jun 15, 4:06 PM CDT, 6 hours 37 minutes before

Hazardous Weather Outlook
National Weather Service Saint Louis MO
406 PM CDT Sat Jun 15 2019

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-161200-
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-
406 PM CDT Sat Jun 15 2019

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 expected across the area through tonight. Heavy
rainfall may produce flash flooding across parts of south central
Illinois. Refer to the flash flood watch for more information.

A few thunderstorms may become severe through tonight. The main
threats will be large hail and damaging winds.

Major river flooding is forecast to continue along parts of the
Missouri, Mississippi, Illinois Rivers as well as the lower Meramec
and Cuivre Rivers.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Thunderstorms remain possible across parts of the area each day
Sunday through Friday. Isolated severe storms will be possible on
Sunday.

Major river flooding is forecast to continue along parts of the
Missouri, Mississippi, Illinois Rivers as well as the lower Meramec
and Cuivre Rivers.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through tonight.

Byrd

In the hours before

Special weather statement, Jun 15, 9:39 PM CDT, 1 hour 4 minutes before

Special Weather Statement
National Weather Service St Louis MO
939 PM CDT Sat Jun 15 2019

ILZ095-MOZ018-019-160315-
Adams IL-Knox MO-Lewis MO-
939 PM CDT Sat Jun 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ADAMS...SOUTHERN
KNOX AND LEWIS COUNTIES UNTIL 1015 PM CDT...

At 938 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles north of Lewistown to 8 miles west of
Plevna. Movement was east at 35 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Canton, La Grange, La Belle, Lewistown, Ewing, Plevna, Steffenville,
Ursa, Loraine, Woodville, Lima, Novelty, Monticello, Newark and
Meyer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
west central Illinois...and northeastern Missouri.

LAT...LON 4025 9150 4020 9150 4019 9108 3995 9171
      3996 9234 4026 9178
TIME...MOT...LOC 0238Z 271DEG 31KT 4018 9180 3998 9224

Britt

Special weather statement, Jun 15, 10:13 PM CDT, 30 minutes before

Special Weather Statement
National Weather Service St Louis MO
1013 PM CDT Sat Jun 15 2019

ILZ095-096-MOZ019-026-027-160345-
Brown IL-Adams IL-Marion MO-Lewis MO-Shelby MO-
1013 PM CDT Sat Jun 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR ADAMS...NORTHWESTERN BROWN...
NORTHWESTERN MARION...NORTHERN SHELBY AND SOUTHERN LEWIS COUNTIES
UNTIL 1045 PM CDT...

At 1012 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Canton to Steffenville to near Clarence.
Movement was east at 45 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Quincy, Canton, Quincy Regional Airport, Warren, Camp Point, Mendon,
La Grange, Clayton, Golden, Shelbyville, Ewing, Maywood,
Steffenville, Emden, Philadelphia, Ursa, Loraine, Woodville, Taylor
and Lima.

This includes Interstate 172 between exits 14 and 19.

This also includes Wakonda State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
west central Illinois...and northeastern Missouri.

LAT...LON 4019 9091 4011 9091 4010 9076 3996 9112
      3975 9172 3977 9229 3985 9229 3995 9200
      3995 9195 3997 9195 4020 9150
TIME...MOT...LOC 0312Z 269DEG 38KT 4014 9145 3996 9188 3981 9231

Britt

Special weather statement, Jun 15, 10:35 PM CDT, 8 minutes before

Special Weather Statement
National Weather Service St Louis MO
1035 PM CDT Sat Jun 15 2019

MOZ026-027-034-035-160415-
Marion MO-Monroe MO-Ralls MO-Shelby MO-
1035 PM CDT Sat Jun 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR RALLS...SOUTHERN MARION...
SOUTHEASTERN SHELBY AND MONROE COUNTIES UNTIL 1115 PM CDT...

At 1034 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northwest of Shelbina to near Madison.
Movement was east at 40 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Hannibal, Monroe City, Shelbina, Paris, Warren, Perry, Madison,
Center, Rensselaer, Spaulding, Maud, Granville, Hunnewell, Holliday,
Stoutsville, The Landing, Florida and Indian Creek.

This also includes Union Covered Bridge Historic Site and Mark Twain
Lake Recreational Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
northeastern Missouri.

LAT...LON 3978 9140 3934 9148 3945 9223 3977 9218
TIME...MOT...LOC 0334Z 277DEG 35KT 3975 9213 3950 9217

Britt

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 9:39 PM CDT	Special Weather Statement	LSX	Lewis	36 min
Jun 15, 10:13 PM CDT	Special Weather Statement	LSX	Marion, Shelby	32 min
Jun 15, 10:35 PM CDT	Special Weather Statement	LSX	Monroe, Ralls	40 min
Jun 15, 11:26 PM CDT	Special Weather Statement	LSX	Pike, Ralls	49 min
Jun 15, 11:38 PM CDT	Special Weather Statement	LSX	Monroe	52 min
Jun 16, 12:26 AM CDT	Special Weather Statement	LSX	Audrain	49 min
Jun 16, 6:30 PM CDT	Areal Flood Advisory	LSX	Audrain, Monroe, Ralls	3 hr
Jun 15, 11:10 PM CDT	Special Weather Statement	LSX	Brown	50 min
Jun 16, 1:01 AM CDT	Special Weather Statement	LSX	Madison	44 min
Jun 16, 1:06 AM CDT	Special Weather Statement	LSX	Montgomery	39 min
Jun 16, 1:14 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Saint Clair	46 min
Jun 16, 2:08 AM CDT	Special Weather Statement	LSX	Clinton, Marion	37 min
Jun 16, 2:19 AM CDT	Areal Flood Advisory	LSX	Madison	6 hr
Jun 16, 2:29 AM CDT	Areal Flood Advisory	LSX	Bond, Clinton	6 hr
Jun 16, 2:58 AM CDT	Special Weather Statement	LSX	Marion	32 min
Jun 16, 3:34 AM CDT	Areal Flood Advisory	LSX	Clinton, Fayette, Marion	5 hr
Jun 16, 10:12 AM CDT	River Flood Warning	LSX	Fayette	25 hr
Jun 16, 2:46 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Marion, Washington	44 min
Jun 16, 3:39 PM CDT	Severe Thunderstorm Warning	LSX	Marion	26 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2019 Severe Thunderstorm Warnings in Illinois, 2019 Every severe thunderstorm warning in 2019

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.