Alert archive / Missouri / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 228, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 28, 2011, 8:51 AM CDT for Sainte Genevieve County, Saint Francois County, Washington County, Missouri. It was in force for 39 min. 2 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
- May 28, 2011, 8:51 AM CDT (13:51 UTC)
- Expired
- May 28, 2011, 9:30 AM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 90 km from the middle of the area, began a volume at 13:52 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 |
|---|---|---|---|
| May 28, 9:01 AM CDT | HAIL 1.5 | 8 S Potosi, MO | |
| May 28, 9:11 AM CDT | HAIL 0.88 | 8 Ese Potosi, MO | LOTS OF HAIL. LOCATION ALONG HIGHWAY 8 AROUND 4 MILES NORTH OF IRONDALE. |
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, 1.9 hours before the alert went out and 297 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 505 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
423 WUUS53 KLSX 281351 SVRLSX MOC186-187-221-281430- /O.NEW.KLSX.SV.W.0228.110528T1351Z-110528T1430Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 851 AM CDT SAT MAY 28 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI... ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI... SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI... * UNTIL 930 AM CDT * AT 847 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 6 MILES SOUTH OF POTOSI...AND MOVING EAST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... BISMARCK...LEADWOOD...BONNE TERRE...DESLOGE...FARMINGTON...MINERAL POINT...IRONDALE...PARK HILLS...ROCKY RIDGE...WEINGARTEN... BLOOMSDALE...FRANKCLAY...LEADINGTON AND FRENCH VILLAGE. 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 3804 9022 3779 9017 3775 9086 3793 9089 TIME...MOT...LOC 1351Z 262DEG 26KT 3785 9076 WIND...HAIL 60MPH 1.00IN $$ CARNEY
2 follow-up statements
732 WWUS53 KLSX 281403 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 903 AM CDT SAT MAY 28 2011 MOC186-187-221-281430- /O.CON.KLSX.SV.W.0228.000000T0000Z-110528T1430Z/ STE. GENEVIEVE MO-ST. FRANCOIS MO-WASHINGTON MO- 903 AM CDT SAT MAY 28 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN WASHINGTON...ST. FRANCOIS AND WESTERN STE. GENEVIEVE COUNTIES UNTIL 930 AM CDT... AT 857 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL... AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR IRONDALE...OR 6 MILES SOUTH OF POTOSI...MOVING EAST AT 25 MPH. IN ADDITION...AT 900 AM PING PONG BALL SIZED HAIL WAS REPORTED 8 MILES SOUTH OF POTOSI WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... BISMARCK...LEADWOOD...BONNE TERRE...DESLOGE...FARMINGTON... IRONDALE...PARK HILLS...ROCKY RIDGE...WEINGARTEN...BLOOMSDALE... FRANKCLAY...LEADINGTON AND FRENCH VILLAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS. IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 3793 9088 3804 9022 3779 9017 3775 9080 TIME...MOT...LOC 1402Z 261DEG 23KT 3786 9070 WIND...HAIL 60MPH 1.50IN $$ CARNEY
301 WWUS53 KLSX 281426 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 926 AM CDT SAT MAY 28 2011 MOC186-187-221-281436- /O.EXP.KLSX.SV.W.0228.000000T0000Z-110528T1430Z/ STE. GENEVIEVE MO-ST. FRANCOIS MO-WASHINGTON MO- 926 AM CDT SAT MAY 28 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON...ST. FRANCOIS AND WESTERN STE. GENEVIEVE COUNTIES WILL EXPIRE AT 930 AM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER SMALL HAIL...HEAVY RAIN...AND DANGEROUS LIGHTNING ARE STILL POSSIBLE WITH THIS THUNDERSTORM. 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 3793 9088 3804 9022 3779 9017 3775 9080 TIME...MOT...LOC 1426Z 261DEG 23KT 3788 9051 $$ CARNEY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 11:31 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe | 44 min |
| May 28, 12:06 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Pike, Ralls | 39 min |
| May 28, 12:40 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 50 min |
| May 28, 1:14 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 46 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.