Alert archive / Missouri / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 21, NWS St. Louis, MO

January 8, 2008Franklin County, Washington County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jan 8, 2008, 5:02 AM CST for Franklin County, Washington County, Missouri. It was in force for 25 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: Jan 8, 2008, 5:02 AM CST (11:02 UTC)
Expired: Jan 8, 2008, 5:27 AM CST
In force: 25 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Franklin County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 38 km from the middle of the area, began a volume at 11:04 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

Lincoln, IL (KILX), launched 00:00Z, 11.0 hours before the alert went out and 277 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 081101
SVRLSX
MOC071-221-081145-
/O.NEW.KLSX.SV.W.0021.080108T1102Z-080108T1145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
502 AM CST TUE JAN 8 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI
  WASHINGTON COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 545 AM CST

* AT 459 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 7 MILES NORTH OF UNION TO 4
  MILES SOUTHWEST OF COURTOIS...OR ALONG A LINE EXTENDING FROM
  WASHINGTON TO 20 MILES SOUTHEAST OF STEELVILLE...AND MOVING EAST AT
  45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  VILLA RIDGE...
  RICHWOODS...
  LONEDELL...
  GRAY SUMMIT...
  POTOSI...
  OLD MINES...
  MINERAL POINT...

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.

LAT...LON 3856 9104 3854 9095 3854 9091 3858 9080
      3858 9078 3859 9077 3860 9074 3821 9078
      3775 9067 3775 9109
TIME...MOT...LOC 1102Z 256DEG 42KT 3856 9099 3775 9110

$$

BRITT

1 follow-up statement

000 
WWUS53 KLSX 081127
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
527 AM CST TUE JAN 8 2008

MOC071-221-081137-
/O.CAN.KLSX.SV.W.0021.000000T0000Z-080108T1145Z/
WASHINGTON MO-FRANKLIN MO-
527 AM CST TUE JAN 8 2008

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN FRANKLIN AND
WASHINGTON COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE.

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

LAT...LON 3856 9104 3854 9095 3854 9091 3858 9080
      3858 9078 3859 9077 3860 9074 3821 9078
      3775 9067 3775 9109
TIME...MOT...LOC 1127Z 256DEG 42KT 3863 9063 3782 9074

$$

BRITT

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, 10:43 PM CST	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Warren	47 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.