Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 13, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 4, 2011, 2:47 PM CST for Boone County, Missouri. It was in force for 43 min. 10 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
- Mar 4, 2011, 2:47 PM CST (20:47 UTC)
- Expired
- Mar 4, 2011, 3:30 PM CST
- In force
- 43 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Boone County, MO
The radar
The St Louis radar (KLSX), 149 km from the middle of the area, began a volume at 20:50 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 |
|---|---|---|---|
| Mar 4, 2:54 PM CST | HAIL 0.25 | 6 Se Harrisburg, MO | HAIL DEEP ENOUGH TO COVER THE DECK |
| Mar 4, 3:00 PM CST | HAIL 0.25 | 4 Nne Midway, MO | |
| Mar 4, 3:01 PM CST | HAIL 0.5 | Rocheport, MO | LASTED FOR 30 SECONDS |
| Mar 4, 3:02 PM CST | HAIL 0.5 | 10 Nnw Columbia, MO | COVERING THE GROUND |
| Mar 4, 3:06 PM CST | HAIL 0.7 | 12 N Columbia, MO | COVERING THE GROUND...HAIL STILL FALLING |
| Mar 4, 3:07 PM CST | HAIL 0.5 | Columbia, MO | HWY 63 N NEAR PEABODY ROAD...REPORTED BY A SHERRIFFS DEPUTY |
| Mar 4, 3:08 PM CST | HAIL 0.5 | 10 Nw Columbia, MO | |
| Mar 4, 3:16 PM CST | HAIL 1.75 | Hallsville, MO | |
| Mar 4, 3:20 PM CST | TSTM WND DMG | Centralia, MO | UTILITY POLES DOWN ON HWY 124 NORTH SOMEWHERE BETWEEN CENTRALIA AND HALLSVILLE |
| Mar 4, 3:35 PM CST | HAIL 1 | Centralia, MO | ON HWY 124 JUST SOUTH OF TOWN |
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 |
|---|---|---|---|
| Mar 4, 1:33 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.8 hours before the alert went out and 274 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
- 18 J/kg
- Mixed-layer CIN
- -209 J/kg
- Mixed-layer LCL
- 1021 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 313 m²/s²
- 0-3 km storm-relative helicity
- 299 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
278
WUUS53 KLSX 042047
SVRLSX
MOC019-042130-
/O.NEW.KLSX.SV.W.0013.110304T2047Z-110304T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
247 PM CST FRI MAR 4 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN BOONE COUNTY IN CENTRAL MISSOURI...
* UNTIL 330 PM CST
* AT 246 PM CST...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
MIDWAY...OR 10 MILES NORTHWEST OF COLUMBIA...AND MOVING EAST AT 30
MPH.
* LOCATIONS IMPACTED INCLUDE...
COLUMBIA...CENTRALIA...STURGEON...HALLSVILLE...MURRY AND
HARRISBURG.
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 3926 9243 3924 9211 3907 9211 3906 9214
3895 9215 3893 9252 3897 9257 3900 9257
TIME...MOT...LOC 2047Z 263DEG 25KT 3905 9246
WIND...HAIL 60MPH 1.00IN
$$
KANOFSKY2 follow-up statements
684
WWUS53 KLSX 042107
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
307 PM CST FRI MAR 4 2011
MOC019-042130-
/O.CON.KLSX.SV.W.0013.000000T0000Z-110304T2130Z/
BOONE MO-
307 PM CST FRI MAR 4 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN BOONE
COUNTY UNTIL 330 PM CST...
AT 303 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES
WEST OF HALLSVILLE...OR 10 MILES NORTH OF COLUMBIA...MOVING EAST AT
30 MPH.
LOCATIONS IMPACTED INCLUDE...
CENTRALIA...HALLSVILLE AND MURRY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3902 9215 3902 9242 3922 9242 3924 9212
3923 9211 3907 9211 3906 9214 3905 9214
TIME...MOT...LOC 2107Z 259DEG 25KT 3910 9230
WIND...HAIL 60MPH 1.00IN
$$
KANOFSKY704
WWUS53 KLSX 042125
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
325 PM CST FRI MAR 4 2011
MOC019-042134-
/O.EXP.KLSX.SV.W.0013.000000T0000Z-110304T2130Z/
BOONE MO-
325 PM CST FRI MAR 4 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BOONE COUNTY IS
BEING REISSUED...
PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION. HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.
LAT...LON 3902 9215 3902 9242 3922 9242 3924 9212
3923 9211 3907 9211 3906 9214 3905 9214
TIME...MOT...LOC 2124Z 259DEG 25KT 3912 9215
$$
KANOFSKYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 4, 3:13 PM CST | Severe Thunderstorm Warning | LSX | Callaway, Cole, Moniteau, Osage | 47 min |
| Mar 4, 3:20 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Boone | 40 min |
| Mar 4, 3:28 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Montgomery | 47 min |
| Mar 4, 3:34 PM CST | Tornado Warning | LSX | Boone, Callaway, Montgomery | 41 min |
| Mar 4, 3:45 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Monroe, Ralls | 45 min |
| Mar 4, 3:49 PM CST | Tornado Warning | LSX | Audrain, Monroe, Pike, Ralls | 56 min |
| Mar 4, 3:59 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Franklin, Gasconade, Lincoln, Montgomery and 3 more | 46 min |
| Mar 4, 4:27 PM CST | Tornado Warning | LSX | Lincoln, Montgomery, Warren | 33 min |
| Mar 4, 4:39 PM CST | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Lincoln, Pike, Saint Charles, Warren | 51 min |
| Mar 4, 4:40 PM CST | Tornado Warning | LSX | Pike | 51 min |
| Mar 4, 5:23 PM CST | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 29 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.