Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 1, NWS St. Louis, MO

January 16, 20125 counties in Missouri; Macoupin County, Montgomery County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jan 16, 2012, 11:59 PM CST for 5 counties in Missouri; Macoupin County, Montgomery County, Illinois. It was in force for 58 days. 17 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: Jan 16, 2012, 11:59 PM CST (05:59 UTC)
Expired: Mar 14, 2012, 7:30 PM CDT
In force: 58 days
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Macoupin County, IL, Montgomery County, IL, Callaway County, MO, Cole County, MO, Gasconade County, MO, Montgomery County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 06:00 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	Remark
Jan 17, 12:50 AM CST	HAIL 0.7	Linn, MO
Jan 17, 1:11 AM CST	HAIL 0.25	Owensville, MO
Jan 17, 1:22 AM CST	HAIL 1	Owensville, MO	IN SOUTHWEST PART OF TOWN.
Mar 2, 4:00 AM CST	HAIL 0.7	Jefferson City, MO	PEA TO DIME SIZED HAIL IN JEFFERSON CITY
Mar 2, 4:00 AM CST	HAIL 1.25	Taos, MO
Mar 2, 4:01 AM CST	HAIL 0.25	Jefferson City, MO	ON THE EAST SIDE OF JEFFERSON CITY
Mar 2, 4:13 AM CST	HAIL 1	Meta, MO
Mar 2, 4:17 AM CST	HAIL 0.88	Meta, MO
Mar 2, 4:34 AM CST	HAIL 0.25	Gasconade, MO
Mar 2, 4:43 AM CST	HAIL 2	Hermann, MO	HAIL COVERING GROUND.
Mar 2, 4:47 AM CST	HAIL 0.7	5 Se Linn, MO	DECK COVERED IN HAIL.
Mar 2, 4:50 AM CST	HAIL 0.7	Pershing, MO	HAIL COVERING THE GROUND
Mar 2, 5:02 AM CST	HAIL 1	5 Ne Drake, MO
Mar 2, 6:14 AM CST	HAIL 1	Fulton, MO
Mar 2, 6:16 AM CST	HAIL 1.75	Fulton, MO
Mar 2, 6:22 AM CST	HAIL 0.75	Jefferson City, MO
Mar 2, 6:43 AM CST	HAIL 1	Montgomery City, 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
Jan 16, 11:47 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.0 hours before the alert went out and 260 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: 3 J/kg
Mixed-layer CIN: -171 J/kg
Mixed-layer LCL: 1205 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 361 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.

130 
WUUS53 KLSX 170559
SVRLSX
MOC027-051-073-139-151-170645-
/O.NEW.KLSX.SV.W.0001.120117T0559Z-120117T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1159 PM CST MON JAN 16 2012

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CALLAWAY COUNTY IN CENTRAL MISSOURI...
  EASTERN COLE COUNTY IN CENTRAL MISSOURI...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  OSAGE COUNTY IN CENTRAL MISSOURI...

* UNTIL 1245 AM CST

* AT 1157 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 5 MILES WEST OF WILLIAMSBURG TO WESTPHALIA...AND MOVING EAST
  AT 55 MPH.

  AT 1149 PM CDT...A 53 MPH WIND WAS REPORTED AT THE JEFFERSON CITY 
  AIRPORT.

* LOCATIONS IMPACTED INCLUDE...
  LINN...MONTGOMERY CITY...HERMANN...OWENSVILLE...SHAMROCK...
  WILLIAMSBURG...CHAMOIS...FREEBURG...RICH FOUNTAIN...MINEOLA...NEW
  FLORENCE...BIG SPRING...MOUNT STERLING...BLAND...DRAKE...ROSEBUD...
  ARGYLE...STEEDMAN...FRANKENSTEIN AND REFORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3904 9207 3901 9141 3871 9142 3871 9140
      3830 9139 3829 9220 3833 9220 3832 9226
TIME...MOT...LOC 0558Z 276DEG 47KT 3890 9178 3839 9204
WIND...HAIL 60MPH <.75IN

$$

BRITT

6 follow-up statements

147 
WWUS53 KLSX 170614
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1214 AM CST TUE JAN 17 2012

MOC051-170624-
/O.CAN.KLSX.SV.W.0001.000000T0000Z-120117T0645Z/
COLE MO-
1214 AM CST TUE JAN 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN COLE COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 3837 9215 3841 9211 3842 9212 3846 9210
      3847 9203 3849 9201 3855 9203 3857 9201
      3857 9206 3902 9184 3901 9141 3871 9142
      3871 9140 3830 9139 3829 9218
TIME...MOT...LOC 0614Z 262DEG 44KT 3895 9149 3856 9174
          3832 9195

$$

MOC027-073-139-151-170645-
/O.CON.KLSX.SV.W.0001.000000T0000Z-120117T0645Z/
CALLAWAY MO-GASCONADE MO-MONTGOMERY MO-OSAGE MO-
1214 AM CST TUE JAN 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR OSAGE...
MONTGOMERY...GASCONADE AND EASTERN CALLAWAY COUNTIES UNTIL 1245 AM
CST...

AT 1211 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM MONTGOMERY CITY TO 6 MILES NORTHEAST OF LINN TO FREEBURG...
MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  HERMANN...OWENSVILLE...FREEBURG...NEW FLORENCE...BIG SPRING...MOUNT
  STERLING...BLAND...DRAKE...ROSEBUD...AMERICUS...MORRISON...
  GASCONADE...RHINELAND...MCKITTRICK...BAY...SWISS AND CANAAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3837 9215 3841 9211 3842 9212 3846 9210
      3847 9203 3849 9201 3855 9203 3857 9201
      3857 9206 3902 9184 3901 9141 3871 9142
      3871 9140 3830 9139 3829 9218
TIME...MOT...LOC 0614Z 262DEG 44KT 3895 9149 3856 9174
          3832 9195
WIND...HAIL 60MPH <.75IN

$$

BRITT

039 
WWUS53 KLSX 170629
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1229 AM CST TUE JAN 17 2012

MOC027-073-139-151-170645-
/O.CON.KLSX.SV.W.0001.000000T0000Z-120117T0645Z/
CALLAWAY MO-GASCONADE MO-MONTGOMERY MO-OSAGE MO-
1229 AM CST TUE JAN 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
OSAGE...MONTGOMERY...GASCONADE AND EASTERN CALLAWAY COUNTIES UNTIL
1245 AM CST...

AT 1227 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM NEW FLORENCE TO 9 MILES NORTHWEST OF DRAKE TO BELLE...MOVING
EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  HERMANN...OWENSVILLE...DRAKE...ROSEBUD...BAY...SWISS AND CANAAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3902 9174 3901 9141 3871 9142 3871 9140
      3830 9139 3831 9189
TIME...MOT...LOC 0629Z 262DEG 44KT 3891 9140 3859 9151
          3835 9172
WIND...HAIL 60MPH <.75IN

$$

BRITT

049 
WWUS53 KLSX 170646
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1246 AM CST TUE JAN 17 2012

MOC027-073-139-151-170654-
/O.EXP.KLSX.SV.W.0001.000000T0000Z-120117T0645Z/
CALLAWAY MO-GASCONADE MO-MONTGOMERY MO-OSAGE MO-
1246 AM CST TUE JAN 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSAGE...MONTGOMERY...
GASCONADE AND EASTERN CALLAWAY COUNTIES WILL EXPIRE AT 1245 AM CST...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED AND MOVED
OUT OF THE WARNED AREA.

A NEW TORNADO WARNING FOR A SEPARATE STORM HAS BEEN ISSUED FOR 
SOUTHERN GASCONADE AND SOUTHEASTERN OSAGE COUNTIES UNTIL 115 AM CDT.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 7 AM CDT.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.

LAT...LON 3902 9174 3901 9141 3871 9142 3871 9140
      3830 9139 3831 9189
TIME...MOT...LOC 0644Z 262DEG 44KT 3893 9117 3862 9128
          3838 9149

$$

BRITT

559 
WUUS53 KLSX 142347
SVRLSX
ILC117-135-150030-
/O.NEW.KLSX.SV.W.0001.120314T2347Z-120315T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
647 PM CDT WED MAR 14 2012

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS...
  SOUTHWESTERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 730 PM CDT

* AT 642 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  MOUNT OLIVE...OR NEAR STAUNTON...AND MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LITCHFIELD...MOUNT OLIVE...TAYLOR SPRINGS...HORNSBY...WALSHVILLE
  AND HONEY BEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3903 8959 3900 8962 3900 8979 3899 8980
      3899 8981 3913 8991 3929 8963 3907 8943
TIME...MOT...LOC 2347Z 240DEG 16KT 3907 8975
WIND...HAIL 60MPH 1.00IN

$$

KANOFSKY

635 
WWUS53 KLSX 150017
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
717 PM CDT WED MAR 14 2012

ILC117-150027-
/O.CAN.KLSX.SV.W.0001.000000T0000Z-120315T0030Z/
MACOUPIN IL-
717 PM CDT WED MAR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MACOUPIN COUNTY
IS CANCELLED...

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

LAT...LON 3903 8959 3900 8962 3900 8970 3925 8970
      3929 8963 3907 8943
TIME...MOT...LOC 0017Z 240DEG 16KT 3913 8960

$$

ILC135-150030-
/O.CON.KLSX.SV.W.0001.000000T0000Z-120315T0030Z/
MONTGOMERY IL-
717 PM CDT WED MAR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
MONTGOMERY COUNTY UNTIL 730 PM CDT...

AT 714 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
LITCHFIELD...MOVING NORTHEAST AT 20 MPH.

QUARTER SIZE HAIL WAS REPORTED IN MOUNT OLIVE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  TAYLOR SPRINGS AND HONEY BEND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3903 8959 3900 8962 3900 8970 3925 8970
      3929 8963 3907 8943
TIME...MOT...LOC 0017Z 240DEG 16KT 3913 8960
WIND...HAIL 60MPH 1.00IN

$$

KANOFSKY

392 
WWUS53 KLSX 150028
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
728 PM CDT WED MAR 14 2012

ILC135-150038-
/O.EXP.KLSX.SV.W.0001.000000T0000Z-120315T0030Z/
MONTGOMERY IL-
728 PM CDT WED MAR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONTGOMERY COUNTY
WILL EXPIRE AT 730 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 3903 8959 3900 8962 3900 8970 3925 8970
      3929 8963 3907 8943
TIME...MOT...LOC 0028Z 226DEG 12KT 3911 8961

$$

KANOFSKY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 17, 12:39 AM CST	Tornado Warning	LSX	Gasconade, Osage	36 min
Jan 17, 12:55 AM CST	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	35 min
Jan 17, 1:14 AM CST	Severe Thunderstorm Warning	LSX	Franklin, Gasconade	31 min
Jan 17, 1:23 AM CST	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	37 min
Jan 17, 1:39 AM CST	Tornado Warning	LSX	Franklin, Jefferson	36 min
Jan 17, 1:41 AM CST	Tornado Warning	LSX	Crawford, Franklin	34 min
Jan 17, 2:08 AM CST	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis, City of Saint Louis	37 min
Jan 17, 2:12 AM CST	Tornado Warning	LSX	Franklin, Jefferson, Washington	33 min
Jan 17, 2:35 AM CST	Tornado Warning	LSX	Jefferson, Saint Louis	40 min
Jan 17, 4:18 AM CST	Severe Thunderstorm Warning	LSX	Crawford	27 min
Jan 17, 4:34 AM CST	Areal Flood Advisory	LSX	Cole, Crawford, Franklin, Gasconade, Jefferson, Saint Charles and 3 more	60 days
Jan 17, 5:22 AM CST	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve	38 min
Jan 17, 6:01 AM CST	Severe Thunderstorm Warning	LSX	Iron, Sainte Genevieve, Saint Francois, Washington	44 min
Jan 17, 6:25 AM CST	Severe Thunderstorm Warning	LSX	Iron, Madison, Reynolds, Saint Francois	50 min
Jan 17, 2:17 AM CST	Severe Thunderstorm Warning	LSX	Madison	28 min
Jan 17, 2:38 AM CST	Severe Thunderstorm Warning	LSX	Clinton, Madison, Saint Clair	52 min
Jan 17, 2:39 AM CST	Severe Thunderstorm Warning	LSX	Bond	36 min
Jan 17, 3:07 AM CST	Tornado Warning	LSX	Clinton, Monroe, Saint Clair, Washington	38 min
Jan 17, 3:23 AM CST	Severe Thunderstorm Warning	LSX	Clinton, Marion	35 min
Jan 17, 3:46 AM CST	Tornado Warning	LSX	Clinton, Washington	29 min
Jan 17, 5:14 AM CST	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Saint Clair	46 min
Jan 17, 5:47 AM CST	Severe Thunderstorm Warning	LSX	Clinton, Fayette, Marion	43 min
Jan 17, 5:53 AM CST	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair, Washington	52 min
Jan 17, 6:35 AM CST	Severe Thunderstorm Warning	LSX	Randolph	25 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2012 Severe Thunderstorm Warnings in Illinois, 2012 Every severe thunderstorm warning in 2012

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.