Alert archive / Missouri / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 13, NWS St. Louis, MO

January 7, 2008Franklin County, Saint Charles County, Warren County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jan 7, 2008, 10:43 PM CST for Franklin County, Saint Charles County, Warren County, Missouri. It was in force for 47 min. 5 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 7, 2008, 10:43 PM CST (04:43 UTC)
Expired: Jan 7, 2008, 11:30 PM CST
In force: 47 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Franklin County, MO, Saint Charles County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 04:44 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
Jan 7, 11:04 PM CST	HAIL 1	Washington, MO
Jan 7, 11:05 PM CST	HAIL 1.5	N Washington, MO
Jan 7, 11:05 PM CST	HAIL 1.75	Washington, MO
Jan 7, 11:08 PM CST	HAIL 0.75	Marthasville, MO
Jan 7, 11:10 PM CST	HAIL 0.75	Marthasville, 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 7, 1:52 PM CST	Tornado Watch	SPC	146 days
Jan 7, 7:48 PM CST	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 4.7 hours before the alert went out and 286 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: 655 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 746 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 317 m²/s²
0-3 km storm-relative helicity: 343 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 080444
SVRLSX
MOC071-183-219-080530-
/O.NEW.KLSX.SV.W.0013.080108T0443Z-080108T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1043 PM CST MON JAN 7 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI
  SOUTHWESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
  SOUTHEASTERN WARREN COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 1130 PM CST

* AT 1039 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED 4 MILES NORTHEAST OF GERALD...OR
  13 MILES SOUTH OF NEW HAVEN...AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WASHINGTON...
  MARTHASVILLE...
  DUTZOW...
  AUGUSTA...
  NEW MELLE...
  DEFIANCE...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
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.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

IF YOU ARE IN A MOBILE HOME...YOU SHOULD TAKE SHELTER IN A NEARBY
STURDY BUILDING.

LAT...LON 3843 9137 3852 9137 3887 9086 3852 9074
      3831 9132
TIME...MOT...LOC 0443Z 233DEG 41KT 3846 9123

$$

PRZYBYLINSKI

1 follow-up statement

000 
WWUS53 KLSX 080530
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1129 PM CST MON JAN 7 2008

MOC071-219-080539-
/O.EXP.KLSX.SV.W.0013.000000T0000Z-080108T0530Z/
FRANKLIN MO-ST. CHARLES MO-WARREN MO-
1129 PM CST MON JAN 7 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WARREN...AND 
NORTHERN FRANKLIN COUNTIES EXPIRES AT 1130 PM CST...

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

HOWEVER...A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM.  
ADDITIONAL STRONG THUNDERSTORMS WHICH COULD POTENTIALLY PRODUCE 
TORNADOES WILL CONTINUE TO BE POSSIBLE.

LAT...LON 3843 9137 3852 9137 3887 9086 3852 9074
      3831 9132
TIME...MOT...LOC 0529Z 233DEG 41KT 3877 9069

$$

CARNEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 7, 6:20 PM CST	Severe Thunderstorm Warning	LSX	Pike	40 min
Jan 7, 7:23 PM CST	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Moniteau	52 min
Jan 7, 8:12 PM CST	Severe Thunderstorm Warning	LSX	Callaway, Montgomery, Warren	48 min
Jan 7, 8:27 PM CST	Tornado Warning	LSX	Pike	48 min
Jan 7, 8:35 PM CST	Tornado Warning	LSX	Crawford, Franklin, Gasconade	40 min
Jan 7, 8:52 PM CST	Severe Thunderstorm Warning	LSX	Gasconade, Osage	38 min
Jan 7, 9:04 PM CST	Tornado Warning	LSX	Gasconade, Osage	41 min
Jan 7, 9:43 PM CST	Tornado Warning	LSX	Lincoln, Pike	47 min
Jan 7, 9:43 PM CST	Tornado Warning	LSX	Franklin, Gasconade, Warren	27 min
Jan 7, 10:01 PM CST	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	44 min
Jan 7, 11:18 PM CST	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	42 min
Jan 8, 12:08 AM CST	Severe Thunderstorm Warning	LSX	Crawford, Gasconade	52 min
Jan 8, 12:35 AM CST	Severe Thunderstorm Warning	LSX	Franklin, Washington	40 min
Jan 8, 1:10 AM CST	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis, City of Saint Louis	50 min
Jan 8, 3:39 AM CST	River Flood Warning	LSX	Marion	17 hr
Jan 8, 4:26 AM CST	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Osage, Washington	49 min
Jan 8, 4:39 AM CST	Severe Thunderstorm Warning	LSX	Iron, Reynolds	51 min
Jan 8, 5:02 AM CST	Severe Thunderstorm Warning	LSX	Franklin, Washington	25 min
Jan 8, 1:30 PM CST	River Flood Warning	LSX	Lincoln	20 hr
Jan 8, 2:30 PM CST	River Flood Warning	LSX	Osage	20 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2008 Every severe thunderstorm warning in 2008

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.