Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 327, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 17, 2011, 9:23 AM CDT for Montgomery County, Warren County, Missouri. It was in force for 37 min. 1 report 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
- Jun 17, 2011, 9:23 AM CDT (14:23 UTC)
- Expired
- Jun 17, 2011, 10:00 AM CDT
- In force
- 37 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Montgomery County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 53 km from the middle of the area, began a volume at 14:26 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 |
|---|---|---|---|
| Jun 17, 10:04 AM CDT | HAIL 0.25 | 3 W Warrenton, MO | PEA SIZED HAIL OBSERVED ON INTERSTATE 70 |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 2.4 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.
- Mixed-layer CAPE
- 786 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 1122 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
109
WUUS53 KLSX 171423
SVRLSX
MOC139-219-171500-
/O.NEW.KLSX.SV.W.0327.110617T1423Z-110617T1500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
923 AM CDT FRI JUN 17 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
NORTHERN WARREN COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 1000 AM CDT
* AT 922 AM 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
BIG SPRING...OR NEAR HERMANN...AND MOVING EAST AT 25 MPH.
* LOCATIONS IMPACTED INCLUDE...
WARRENTON...WRIGHT CITY...JONESBURG...TRUESDALE AND HIGH HILL.
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.
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 3895 9123 3887 9110 3885 9099 3875 9096
3873 9097 3870 9130 3871 9131 3870 9137
3871 9140 3871 9149 3869 9151 3868 9154
3881 9160
TIME...MOT...LOC 1423Z 250DEG 23KT 3876 9144
WIND...HAIL 60MPH 1.00IN
$$
TILLY1 follow-up statement
245
WWUS53 KLSX 171448
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
948 AM CDT FRI JUN 17 2011
MOC139-219-171500-
/O.CON.KLSX.SV.W.0327.000000T0000Z-110617T1500Z/
MONTGOMERY MO-WARREN MO-
948 AM CDT FRI JUN 17 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
WARREN AND MONTGOMERY COUNTIES UNTIL 1000 AM CDT...
AT 945 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
JONESBURG...OR 9 MILES WEST OF WARRENTON...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
WARRENTON...WRIGHT CITY AND TRUESDALE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
&&
LAT...LON 3871 9140 3888 9142 3895 9123 3887 9110
3885 9099 3875 9096 3873 9097 3870 9130
3871 9131 3870 9137
TIME...MOT...LOC 1448Z 249DEG 25KT 3884 9128
WIND...HAIL 60MPH 1.00IN
$$
TILLYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:35 AM CDT | Severe Thunderstorm Warning | LSX | Osage | 39 min |
| Jun 17, 10:48 AM CDT | Areal Flood Advisory | LSX | Audrain, Boone | 4 hr |
| Jun 17, 11:12 AM CDT | Areal Flood Advisory | LSX | Lincoln, Montgomery, Warren | 4 hr |
| Jun 17, 11:51 AM CDT | Areal Flood Advisory | LSX | Saint Charles, Saint Louis, City of Saint Louis | 3 hr |
| Jun 17, 12:15 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 45 min |
| Jun 17, 12:25 PM CDT | Flash Flood Warning | LSX | Saint Louis, City of Saint Louis | 5 hr |
| Jun 17, 12:33 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 27 min |
| Jun 17, 12:50 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 40 min |
| Jun 17, 4:44 PM CDT | River Flood Warning | LSX | Saint Charles | 3 hr |
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.