Alert archive / Missouri / Tornado Warnings in 2010

Tornado Warning 8, NWS St. Louis, MO

April 4, 2010Calhoun County, Illinois; Lincoln County, Pike County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 4, 2010, 8:55 PM CDT for Calhoun County, Illinois; Lincoln County, Pike County, Missouri. It was in force for 35 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 4, 2010, 8:55 PM CDT (01:55 UTC)
Expired: Apr 4, 2010, 9:30 PM CDT
In force: 35 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Calhoun County, IL, Lincoln County, MO, Pike County, MO

The radar

The St Louis radar (KLSX), 59 km from the middle of the area, began a volume at 01:58 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.

What was reported inside it

Time	Report	Where
Apr 4, 8:58 PM CDT	HAIL 0.5	Whiteside, MO
Apr 4, 8:58 PM CDT	HAIL 1	Paynesville, MO
Apr 4, 9:05 PM CDT	HAIL 1	1 W Annada, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 4, 3:34 PM CDT	Tornado Watch	SPC	8 hr
Apr 4, 8:43 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.9 hours before the alert went out and 206 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: 2143 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 334 m²/s²
0-3 km storm-relative helicity: 480 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

762 
WFUS53 KLSX 050155
TORLSX
ILC013-MOC113-163-050230-
/O.NEW.KLSX.TO.W.0008.100405T0155Z-100405T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
855 PM CDT SUN APR 4 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
  NORTHERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN PIKE COUNTY IN NORTHEAST MISSOURI...

* UNTIL 930 PM CDT

* AT 854 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR EOLIA...OR 10 MILES NORTHWEST OF ELSBERRY...
  AND MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ELSBERRY...CLARKSVILLE...BELLEVIEW...HARDIN...PAYNESVILLE...NEW
  HOPE...ANNADA...MOZIER...HAMBURG...FOLEY...KAMPSVILLE...BATCHTOWN
  AND MICHAEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3939 9062 3936 9062 3932 9061 3926 9061
      3918 9060 3917 9061 3910 9061 3907 9059
      3900 9058 3914 9120 3941 9107
TIME...MOT...LOC 0155Z 276DEG 47KT 3923 9094

$$

BRITT

2 follow-up statements

167 
WWUS53 KLSX 050208
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
908 PM CDT SUN APR 4 2010

ILC013-MOC113-163-050230-
/O.CON.KLSX.TO.W.0008.000000T0000Z-100405T0230Z/
CALHOUN IL-LINCOLN MO-PIKE MO-
908 PM CDT SUN APR 4 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR CALHOUN COUNTY IN
SOUTHWEST ILLINOIS...AND NORTHEASTERN LINCOLN COUNTY IN EAST CENTRAL 
MISSOURI...AND SOUTHEASTERN PIKE COUNTY IN NORTHEAST MISSOURI UNTIL 
930 PM CDT...

AT 906 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR ELSBERRY...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  ELSBERRY...BELLEVIEW...HARDIN...MOZIER...HAMBURG...FOLEY...
  KAMPSVILLE...BATCHTOWN AND MICHAEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3939 9062 3936 9062 3931 9061 3926 9061
      3918 9060 3917 9061 3910 9061 3907 9059
      3900 9058 3911 9106 3940 9092
TIME...MOT...LOC 0207Z 276DEG 37KT 3921 9082

$$

BRITT

188 
WWUS53 KLSX 050226
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
926 PM CDT SUN APR 4 2010

ILC013-MOC113-163-050235-
/O.EXP.KLSX.TO.W.0008.000000T0000Z-100405T0230Z/
CALHOUN IL-LINCOLN MO-PIKE MO-
926 PM CDT SUN APR 4 2010

...THE TORNADO WARNING FOR CALHOUN COUNTY IN SOUTHWEST ILLINOIS...AND
NORTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...AND EAST
CENTRAL PIKE COUNTY IN NORTHEAST MISSOURI WILL EXPIRE AT 930 PM
CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL UNTIL 11 PM CDT FOR CALHOUN AND PIKE 
COUNTIES...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR 
LINCOLN COUNTY UNTIL 2 AM CDT.

LAT...LON 3939 9062 3936 9062 3931 9061 3926 9061
      3918 9060 3917 9061 3910 9061 3907 9059
      3900 9058 3911 9106 3940 9092
TIME...MOT...LOC 0225Z 276DEG 37KT 3919 9058

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 8:34 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	26 min
Apr 4, 8:58 PM CDT	Severe Thunderstorm Warning	LSX	Pike	32 min
Apr 4, 9:22 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey	38 min
Apr 4, 9:38 PM CDT	Tornado Warning	LSX	Greene, Jersey	26 min
Apr 4, 9:50 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Pike	40 min
Apr 4, 9:55 PM CDT	Tornado Warning	LSX	Macoupin	35 min
Apr 4, 10:16 PM CDT	Tornado Warning	LSX	Greene, Macoupin	29 min
Apr 4, 10:30 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Macoupin, Montgomery	45 min
Apr 4, 10:35 PM CDT	Tornado Warning	LSX	Macoupin	40 min
Apr 4, 10:41 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	34 min
Apr 4, 10:48 PM CDT	Tornado Warning	LSX	Macoupin, Montgomery	42 min
Apr 4, 11:13 PM CDT	Tornado Warning	LSX	Jersey, Macoupin	32 min
Apr 4, 11:29 PM CDT	Tornado Warning	LSX	Montgomery	46 min
Apr 4, 11:51 PM CDT	Tornado Warning	LSX	Fayette, Montgomery	39 min
Apr 4, 11:54 PM CDT	Severe Thunderstorm Warning	LSX	Madison	36 min
Apr 5, 12:30 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Pike	30 min
Apr 5, 2:50 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Madison, Montgomery	40 min
Apr 5, 3:28 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	47 min
Apr 5, 4:07 PM CDT	Areal Flood Advisory	LSX	Montgomery	4 hr
Apr 5, 4:16 PM CDT	Tornado Warning	LSX	Fayette, Montgomery	32 min
Apr 4, 7:16 PM CDT	Tornado Warning	LSX	Audrain, Boone, Monroe	44 min
Apr 4, 7:55 PM CDT	Tornado Warning	LSX	Audrain, Monroe, Ralls	35 min
Apr 4, 8:19 PM CDT	Tornado Warning	LSX	Lincoln, Pike	41 min
Apr 4, 8:23 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	37 min
Apr 4, 8:43 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	47 min
Apr 4, 8:57 PM CDT	Tornado Warning	LSX	Audrain, Montgomery	33 min
Apr 4, 9:29 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	46 min
Apr 4, 9:56 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway	34 min
Apr 4, 10:03 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	42 min
Apr 4, 10:18 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	27 min
Apr 4, 11:25 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	35 min
Apr 5, 11:59 AM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	31 min

Nearby

Tornado Warnings in Missouri, 2010 Tornado Warnings in Illinois, 2010 Every tornado warning in 2010 Tornadoes in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.