Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 494, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 19, 2011, 1:14 AM CDT for Boone County, Moniteau County, Missouri. It was in force for 46 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
- Aug 19, 2011, 1:14 AM CDT (06:14 UTC)
- Expired
- Aug 19, 2011, 2:00 AM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Boone County, MO, Moniteau County, MO
The radar
The Pleasant Hill radar (KEAX), 145 km from the middle of the area, began a volume at 06:18 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 |
|---|---|---|---|
| Aug 19, 1:08 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 6.2 hours before the alert went out and 231 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.
- Mixed-layer CAPE
- 3816 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1273 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 11.7
The text
As transmitted, in the capitals the NWS used until 2016.
463
WUUS53 KLSX 190614
SVRLSX
MOC019-135-190700-
/O.NEW.KLSX.SV.W.0494.110819T0614Z-110819T0700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
114 AM CDT FRI AUG 19 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWEST BOONE COUNTY IN CENTRAL MISSOURI...
MONITEAU COUNTY IN CENTRAL MISSOURI...
* UNTIL 200 AM CDT
* AT 108 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MARSHALL TO 15 MILES SOUTHWEST OF SEDALIA...AND
MOVING EAST AT 45 MPH.
* LOCATIONS IMPACTED INCLUDE...
TIPTON...CALIFORNIA...COLUMBIA...CLARKSBURG...ROCHEPORT...HIGH
POINT...JAMESTOWN...MCGIRK...EASLEY...MIDWAY...LATHAM...KLIEVER...
LUPUS...SANDY HOOK...MCBAINE AND ENON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THESE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE
ACROSS MUCH OF NORTHWEST MISSOURI. THIS IS AN EXTREMELY DANGEROUS
SITUATION WITH TORNADO LIKE WIND SPEEDS EXPECTED. MOBILE HOMES AND
HIGH PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS
MAGNITUDE AND MAY BE OVERTURNED. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THESE
STORMS HAVE THE POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT
DAMAGE TO PROPERTY.
&&
LAT...LON 3868 9285 3869 9278 3869 9262 3891 9251
3893 9251 3897 9257 3899 9256 3898 9232
3874 9238 3874 9239 3842 9249 3843 9263
3860 9285
TIME...MOT...LOC 0612Z 275DEG 38KT 3889 9313 3871 9305
3853 9319
WIND...HAIL 70MPH <.75IN
$$
CVKING1 follow-up statement
624
WWUS53 KLSX 190646
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
146 AM CDT FRI AUG 19 2011
MOC019-135-190700-
/O.CON.KLSX.SV.W.0494.000000T0000Z-110819T0700Z/
BOONE MO-MONITEAU MO-
146 AM CDT FRI AUG 19 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MONITEAU AND
WEST CENTRAL BOONE COUNTIES UNTIL 200 AM CDT...
AT 140 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTHEAST OF BUNCETON TO CLARKSBURG TO 6 MILES
NORTHEAST OF VERSAILLES...MOVING EAST AT 45 MPH.
LOCATIONS IMPACTED INCLUDE...
CALIFORNIA...ROCHEPORT...HIGH POINT...MCGIRK...JAMESTOWN...
MIDWAY...EASLEY...KLIEVER...SANDY HOOK...LUPUS...ENON AND MCBAINE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS
NORTHWEST AND WEST CENTRAL MISSOURI. THIS IS AN EXTREMELY DANGEROUS
SITUATION WITH TORNADO LIKE WIND SPEEDS EXPECTED. MOBILE HOMES AND
HIGH PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS
MAGNITUDE AND MAY BE OVERTURNED. MOVE IMMEDIATELY TO A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3868 9285 3869 9278 3869 9262 3891 9251
3893 9251 3897 9257 3899 9256 3898 9232
3874 9238 3874 9239 3842 9249 3843 9263
3860 9285
TIME...MOT...LOC 0644Z 275DEG 38KT 3886 9267 3868 9259
3850 9273
WIND...HAIL 70MPH <.75IN
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 2:01 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau, Osage | 44 min |
| Aug 19, 2:34 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Cole, Crawford, Franklin, Gasconade, Montgomery and 2 more | 41 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 2011Every severe thunderstorm warning in 2011
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.