Alert archive / Illinois / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 84, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 19, 2011, 8:07 AM CDT for Bond County, Fayette County, Montgomery County, Illinois. It was in force for 38 min. 3 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
- Apr 19, 2011, 8:07 AM CDT (13:07 UTC)
- Expired
- Apr 19, 2011, 8:45 AM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 50.0 mph
Counties Bond County, IL, Fayette County, IL, Montgomery County, IL
The radar
The St Louis radar (KLSX), 129 km from the middle of the area, began a volume at 13:09 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 |
|---|---|---|---|
| Apr 19, 8:16 AM CDT | HAIL 1 | 3 S Donnellson, IL | |
| Apr 19, 8:26 AM CDT | HAIL 1 | Fillmore, IL | 2223 BURG TRAIL FILLMORE IL ALONG HIGHWAY 185 NEAR VAN BURENSBURG. HAIL COVERING THE GROUND. |
| Apr 19, 8:43 AM CDT | HAIL 0.25 | 1 S Ramsey, IL |
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 |
|---|---|---|---|
| Apr 19, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 1.1 hours before the alert went out and 142 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
- 453 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
486 WUUS53 KLSX 191307 SVRLSX ILC005-051-135-191345- /O.NEW.KLSX.SV.W.0084.110419T1307Z-110419T1345Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 807 AM CDT TUE APR 19 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BOND COUNTY IN SOUTH CENTRAL ILLINOIS... WESTERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS... SOUTHERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS... * UNTIL 845 AM CDT * AT 805 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR RENO...OR 9 MILES NORTHWEST OF GREENVILLE... AND MOVING EAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... GREENVILLE...VANDALIA...COFFEEN...WOBURN...MULBERRY GROVE...VAN BURENSBURG...SHOBONIER...RAMSEY...PANAMA...DONNELLSON... SMITHBORO...PLEASANT MOUND...CHAPMAN...PITTSBURG...FILLMORE... HAGERSTOWN...SHAFTER...BINGHAM...BAYLE CITY AND ST. PAUL. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 3883 8895 3887 8964 3909 8966 3922 8897 TIME...MOT...LOC 1307Z 257DEG 31KT 3897 8952 WIND...HAIL <50MPH 1.75IN $$ BRITT
3 follow-up statements
568 WWUS53 KLSX 191318 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 818 AM CDT TUE APR 19 2011 ILC005-051-135-191345- /O.CON.KLSX.SV.W.0084.000000T0000Z-110419T1345Z/ MONTGOMERY IL-BOND IL-FAYETTE IL- 818 AM CDT TUE APR 19 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN FAYETTE...NORTHERN BOND AND SOUTHERN MONTGOMERY COUNTIES UNTIL 845 AM CDT... AT 813 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR WOBURN...OR 8 MILES NORTH OF GREENVILLE... MOVING EAST AT 35 MPH. AT 816 AM CDT...QUARTER SIZE HAIL WAS REPORTED WITH THIS STORM 3 MILES SOUTH OF DONNELLSON. LOCATIONS IMPACTED INCLUDE... VANDALIA...MULBERRY GROVE...VAN BURENSBURG...SHOBONIER...RAMSEY... PLEASANT MOUND...CHAPMAN...PITTSBURG...FILLMORE...HAGERSTOWN... SHAFTER...BINGHAM...BAYLE CITY AND ST. PAUL. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 3883 8895 3887 8964 3909 8966 3922 8897 TIME...MOT...LOC 1317Z 257DEG 31KT 3901 8936 WIND...HAIL <50MPH 1.75IN $$ BRITT
799 WWUS53 KLSX 191332 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 832 AM CDT TUE APR 19 2011 ILC005-051-135-191345- /O.CON.KLSX.SV.W.0084.000000T0000Z-110419T1345Z/ MONTGOMERY IL-BOND IL-FAYETTE IL- 832 AM CDT TUE APR 19 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN FAYETTE...NORTHEASTERN BOND AND SOUTH CENTRAL MONTGOMERY COUNTIES UNTIL 845 AM CDT... AT 828 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES EAST OF VAN BURENSBURG...OR 7 MILES NORTHWEST OF VANDALIA...MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... RAMSEY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 3895 8947 3912 8947 3922 8897 3897 8896 TIME...MOT...LOC 1332Z 257DEG 41KT 3907 8912 WIND...HAIL <50MPH 1.00IN $$ BRITT
595 WWUS53 KLSX 191343 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 843 AM CDT TUE APR 19 2011 ILC005-051-135-191352- /O.EXP.KLSX.SV.W.0084.000000T0000Z-110419T1345Z/ MONTGOMERY IL-BOND IL-FAYETTE IL- 843 AM CDT TUE APR 19 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN FAYETTE... NORTHEASTERN BOND AND SOUTH CENTRAL MONTGOMERY COUNTIES WILL EXPIRE AT 845 AM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. A NEW WARNING HAS BEEN ISSUED FOR NORTHERN FAYETTE COUNTY UNTIL 915 AM CDT. ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 AM CDT. LAT...LON 3895 8947 3912 8947 3922 8897 3897 8896 TIME...MOT...LOC 1342Z 257DEG 41KT 3910 8898 $$ BRITT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 4:35 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 40 min |
| Apr 19, 5:14 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Pike | 31 min |
| Apr 19, 6:21 AM CDT | Areal Flood Advisory | LSX | Madison, Monroe, Saint Clair | 3 hr |
| Apr 19, 6:22 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 38 min |
| Apr 19, 6:26 AM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 49 min |
| Apr 19, 6:56 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 49 min |
| Apr 19, 7:08 AM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison, Montgomery | 37 min |
| Apr 19, 7:36 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Madison, Montgomery | 39 min |
| Apr 19, 8:25 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 29 min |
| Apr 19, 8:41 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 34 min |
| Apr 19, 11:18 AM CDT | River Flood Warning | LSX | Calhoun, Greene, Jersey | 85 days |
| Apr 19, 3:46 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 44 min |
| Apr 19, 3:59 PM CDT | Tornado Warning | LSX | Pike | 46 min |
| Apr 19, 4:18 PM CDT | Tornado Warning | LSX | Calhoun, Greene, Pike | 42 min |
| Apr 19, 4:31 PM CDT | Tornado Warning | LSX | Calhoun | 44 min |
| Apr 19, 4:41 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison | 49 min |
| Apr 19, 4:59 PM CDT | Tornado Warning | LSX | Greene, Pike | 46 min |
| Apr 19, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 47 min |
| Apr 19, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 47 min |
| Apr 19, 5:36 PM CDT | Tornado Warning | LSX | Macoupin | 39 min |
| Apr 19, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 34 min |
| Apr 19, 5:44 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 34 min |
| Apr 19, 6:01 PM CDT | Tornado Warning | LSX | Montgomery | 44 min |
| Apr 19, 6:05 PM CDT | Tornado Warning | LSX | Macoupin, Montgomery | 40 min |
| Apr 19, 6:12 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 48 min |
| Apr 19, 6:14 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 61 min |
| Apr 19, 6:31 PM CDT | Tornado Warning | LSX | Montgomery | 27 min |
| Apr 19, 6:56 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Madison, Montgomery | 64 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 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.