Alert archive / Illinois / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 77, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 10, 2017, 7:16 PM CDT for Pike County, Missouri; Calhoun County, Greene County, Pike County, Illinois. It was in force for 44 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
- May 10, 2017, 7:16 PM CDT (00:16 UTC)
- Expired
- May 10, 2017, 8:00 PM CDT
- In force
- 44 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Greene County, IL, Pike County, IL, Pike County, MO
The radar
The St Louis radar (KLSX), 76 km from the middle of the area, began a volume at 00:19 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 nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.3 hours before the alert went out and 187 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
- 442 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 1634 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.0
The text
As transmitted.
433
WUUS53 KLSX 110016
SVRLSX
ILC013-061-149-MOC163-110100-
/O.NEW.KLSX.SV.W.0077.170511T0016Z-170511T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
716 PM CDT WED MAY 10 2017
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northwestern Calhoun County in southwestern Illinois...
Greene County in southwestern Illinois...
Southeastern Pike County in west central Illinois...
East central Pike County in northeastern Missouri...
* Until 800 PM CDT.
* At 716 PM CDT, a severe thunderstorm was located over Clarksville,
moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
White Hall, Carrollton, Roodhouse, Pleasant Hill, Clarksville,
Belleview, Nebo, Kampsville, Wrights, Eldred, Hillview, Pearl,
Paynesville, Annada, Belltown, Mozier, Berdan, Haypress,
Walkersville and Woody.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3949 9026 3922 9025 3925 9098 3944 9098
TIME...MOT...LOC 0016Z 269DEG 31KT 3936 9088
HAIL...1.00IN
WIND...60MPH
$$
Britt3 follow-up statements
514
WWUS53 KLSX 110030
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
730 PM CDT WED MAY 10 2017
MOC163-110039-
/O.CAN.KLSX.SV.W.0077.000000T0000Z-170511T0100Z/
Pike MO-
730 PM CDT WED MAY 10 2017
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIKE COUNTY IN
NORTHEASTERN MISSOURI IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3949 9026 3922 9025 3924 9072 3925 9073
3927 9076 3932 9080 3938 9092 3945 9089
TIME...MOT...LOC 0029Z 269DEG 31KT 3936 9072
$$
ILC013-061-149-110100-
/O.CON.KLSX.SV.W.0077.000000T0000Z-170511T0100Z/
Calhoun IL-Greene IL-Pike IL-
730 PM CDT WED MAY 10 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHWESTERN CALHOUN...GREENE COUNTIES IN SOUTHWESTERN ILLINOIS
AND SOUTHEASTERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS...
At 729 PM CDT, a severe thunderstorm was located near Belleview,
moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
White Hall, Carrollton, Roodhouse, Pleasant Hill, Clarksville,
Belleview, Nebo, Kampsville, Wrights, Eldred, Hillview, Pearl,
Belltown, Mozier, Berdan, Haypress, Walkersville, Woody, Beecreek and
Michael.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3949 9026 3922 9025 3924 9072 3925 9073
3927 9076 3932 9080 3938 9092 3945 9089
TIME...MOT...LOC 0029Z 269DEG 31KT 3936 9072
HAIL...1.00IN
WIND...60MPH
$$
Britt945
WWUS53 KLSX 110047
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
747 PM CDT WED MAY 10 2017
ILC013-149-110056-
/O.CAN.KLSX.SV.W.0077.000000T0000Z-170511T0100Z/
Calhoun IL-Pike IL-
747 PM CDT WED MAY 10 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CALHOUN COUNTY IN
SOUTHWESTERN ILLINOIS AND SOUTHEASTERN PIKE COUNTIES IN WEST CENTRAL
ILLINOIS IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3949 9026 3922 9025 3922 9029 3924 9047
3930 9061 3935 9062 3938 9062 3939 9061
3943 9062
TIME...MOT...LOC 0046Z 269DEG 31KT 3936 9052
$$
ILC061-110100-
/O.CON.KLSX.SV.W.0077.000000T0000Z-170511T0100Z/
Greene IL-
747 PM CDT WED MAY 10 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR CENTRAL GREENE COUNTY...
At 746 PM CDT, a severe thunderstorm was located 7 miles northwest of
Carrollton, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
White Hall, Carrollton, Kampsville, Wrights, Eldred, Hillview,
Walkersville, Woody, Belltown, Berdan and Haypress.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3949 9026 3922 9025 3922 9029 3924 9047
3930 9061 3935 9062 3938 9062 3939 9061
3943 9062
TIME...MOT...LOC 0046Z 269DEG 31KT 3936 9052
HAIL...1.00IN
WIND...60MPH
$$
Britt140
WWUS53 KLSX 110055
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
755 PM CDT WED MAY 10 2017
ILC061-110105-
/O.EXP.KLSX.SV.W.0077.000000T0000Z-170511T0100Z/
Greene IL-
755 PM CDT WED MAY 10 2017
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GREENE COUNTY WILL
EXPIRE AT 800 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
St Louis.
LAT...LON 3949 9026 3922 9025 3922 9029 3924 9047
3930 9061 3935 9062 3938 9062 3939 9061
3943 9062
TIME...MOT...LOC 0055Z 269DEG 31KT 3936 9046
$$
BrittThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 8:14 PM CDT | Special Weather Statement | LSX | Lincoln | 31 min |
| May 11, 6:25 PM CDT | Special Weather Statement | LSX | Reynolds | 50 min |
| May 10, 8:50 PM CDT | Special Weather Statement | LSX | Jersey | 25 min |
| May 10, 9:23 PM CDT | Special Weather Statement | LSX | Jersey | 37 min |
| May 10, 9:31 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 27 min |
| May 10, 11:33 PM CDT | Flash Flood Warning | LSX | Bond, Fayette, Madison, Marion, Montgomery | 6 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 2017Severe Thunderstorm Warnings in Missouri, 2017Every severe thunderstorm warning in 2017
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.