Alert archive / Missouri / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 53, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 5, 2017, 12:20 AM CDT for 7 counties in Missouri; Monroe County, Randolph County, Saint Clair County, Illinois. It was in force for 40 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 5, 2017, 12:20 AM CDT (05:20 UTC)
- Expired
- Apr 5, 2017, 1:00 AM CDT
- In force
- 40 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Monroe County, IL, Randolph County, IL, Saint Clair County, IL, City of Saint Louis, MO, Franklin County, MO, Jefferson County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 36 km from the middle of the area, began a volume at 05:21 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 5, 12:32 AM CDT | HAIL 0.75 | 3 Se Hematite, MO | PEA TO DIME SIZE HAIL. |
| Apr 5, 12:35 AM CDT | HAIL 1 | 2 Ne Hematite, MO | |
| Apr 5, 1:00 AM CDT | HAIL 0.25 | Waterloo, IL |
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 00:00Z, 5.3 hours before the alert went out and 236 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
- 868 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
391
WUUS53 KLSX 050520
SVRLSX
ILC133-157-163-MOC071-099-186-187-189-221-510-050600-
/O.NEW.KLSX.SV.W.0053.170405T0520Z-170405T0600Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1220 AM CDT WED APR 5 2017
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Monroe County in southwestern Illinois...
Northwestern Randolph County in southwestern Illinois...
Western St. Clair County in southwestern Illinois...
St. Louis City in east central Missouri...
Jefferson County in east central Missouri...
Northern Ste. Genevieve County in southeastern Missouri...
Northeastern Washington County in east central Missouri...
Southeastern Franklin County in east central Missouri...
Southern St. Louis County in east central Missouri...
Northwestern St. Francois County in southeastern Missouri...
* Until 100 AM CDT.
* At 1220 AM CDT, severe thunderstorms were located along a line
extending from near Pacific to near Hillsboro to near Bonne Terre,
moving northeast at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
St. Louis, Chesterfield, Wildwood, University City, Ballwin,
Kirkwood, East St. Louis, Webster Groves, Arnold, Manchester, Creve
Coeur, Overland, Clayton, Cahokia, Jennings, Crestwood, Festus,
Bellefontaine Neighbors, Town and Country and Eureka.
This includes the following highways...
Interstate 44 in Missouri between exits 247 and 277.
Interstate 55 in Missouri between exits 154 and 191.
This also includes Washington State Park, St. Francois State Park,
Scott Joplin Historic Site, Route 66 State Park, Felix Valle House
State Park, Castlewood State Park, Mastodon Historic Site, Sandy
Creek Covered Bridge Historic Site, Gov. Dunklin's Grave Historic
Site, and Robertsville State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3850 9096 3875 9020 3874 9019 3872 9021
3871 9021 3866 9018 3866 9016 3802 8985
3784 9058
TIME...MOT...LOC 0520Z 240DEG 38KT 3845 9078 3820 9060 3794 9052
HAIL...0.88IN
WIND...60MPH
$$
Glass3 follow-up statements
451
WWUS53 KLSX 050530
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1230 AM CDT WED APR 5 2017
MOC071-221-050540-
/O.CAN.KLSX.SV.W.0053.000000T0000Z-170405T0600Z/
Washington MO-Franklin MO-
1230 AM CDT WED APR 5 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON AND
SOUTHEASTERN FRANKLIN COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3788 9046 3843 9074 3857 9073 3875 9020
3874 9019 3872 9021 3871 9021 3866 9018
3866 9016 3802 8985
TIME...MOT...LOC 0530Z 240DEG 39KT 3850 9068 3825 9050 3799 9042
$$
ILC133-157-163-MOC099-186-187-189-510-050600-
/O.CON.KLSX.SV.W.0053.000000T0000Z-170405T0600Z/
Monroe IL-Randolph IL-St. Clair IL-St. Louis City MO-Jefferson MO-
Ste. Genevieve MO-St. Louis MO-St. Francois MO-
1230 AM CDT WED APR 5 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR MONROE...NORTHWESTERN RANDOLPH...WESTERN ST. CLAIR...JEFFERSON...
NORTHERN STE. GENEVIEVE...SOUTHERN ST. LOUIS AND NORTH CENTRAL ST.
FRANCOIS COUNTIES AND ST. LOUIS CITY...
At 1230 AM CDT, severe thunderstorms were located along a line
extending from near Eureka to near Hillsboro to 8 miles northeast of
Bonne Terre, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
St. Louis, Chesterfield, Wildwood, University City, Ballwin,
Kirkwood, East St. Louis, Webster Groves, Arnold, Manchester, Creve
Coeur, Overland, Clayton, Cahokia, Jennings, Crestwood, Festus,
Bellefontaine Neighbors, Town and Country and Eureka.
This also includes Scott Joplin Historic Site, Route 66 State Park,
Castlewood State Park, Mastodon Historic Site, Sandy Creek Covered
Bridge Historic Site, and Gov. Dunklin's Grave Historic Site.
This includes the following highways...
Interstate 44 in Missouri between exits 261 and 277.
Interstate 55 in Missouri between exits 154 and 191.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3788 9046 3843 9074 3857 9073 3875 9020
3874 9019 3872 9021 3871 9021 3866 9018
3866 9016 3802 8985
TIME...MOT...LOC 0530Z 240DEG 39KT 3850 9068 3825 9050 3799 9042
HAIL...0.88IN
WIND...60MPH
$$
Glass606
WWUS53 KLSX 050543
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1243 AM CDT WED APR 5 2017
MOC187-050552-
/O.CAN.KLSX.SV.W.0053.000000T0000Z-170405T0600Z/
St. Francois MO-
1243 AM CDT WED APR 5 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL ST. FRANCOIS
COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3792 9028 3846 9058 3858 9070 3875 9020
3874 9019 3872 9021 3871 9021 3866 9018
3866 9016 3802 8985
TIME...MOT...LOC 0542Z 242DEG 43KT 3856 9053 3831 9035 3805 9027
$$
ILC133-157-163-MOC099-186-189-510-050600-
/O.CON.KLSX.SV.W.0053.000000T0000Z-170405T0600Z/
Monroe IL-Randolph IL-St. Clair IL-St. Louis City MO-Jefferson MO-
Ste. Genevieve MO-St. Louis MO-
1243 AM CDT WED APR 5 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR MONROE...NORTHWESTERN RANDOLPH...WESTERN ST. CLAIR...EASTERN
JEFFERSON...NORTHEASTERN STE. GENEVIEVE AND SOUTHERN ST. LOUIS
COUNTIES AND ST. LOUIS CITY...
At 1242 AM CDT, severe thunderstorms were located along a line
extending from Twin Oaks to near Valmeyer to near Bloomsdale, moving
northeast at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
St. Louis, Chesterfield, Wildwood, University City, Ballwin,
Kirkwood, East St. Louis, Webster Groves, Arnold, Manchester, Creve
Coeur, Overland, Clayton, Cahokia, Jennings, Crestwood, Festus,
Bellefontaine Neighbors, Town and Country and Eureka.
This also includes Scott Joplin Historic Site, Route 66 State Park,
Castlewood State Park, Mastodon Historic Site, and Gov. Dunklin's
Grave Historic Site.
This includes the following highways...
Interstate 44 in Missouri between exits 264 and 277.
Interstate 55 in Missouri between exits 154 and 191.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3792 9028 3846 9058 3858 9070 3875 9020
3874 9019 3872 9021 3871 9021 3866 9018
3866 9016 3802 8985
TIME...MOT...LOC 0542Z 242DEG 43KT 3856 9053 3831 9035 3805 9027
HAIL...0.75IN
WIND...60MPH
$$
Glass342
WWUS53 KLSX 050600
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
100 AM CDT WED APR 5 2017
ILC133-157-163-MOC099-186-189-510-050610-
/O.EXP.KLSX.SV.W.0053.000000T0000Z-170405T0600Z/
Monroe IL-Randolph IL-St. Clair IL-St. Louis City MO-Jefferson MO-
Ste. Genevieve MO-St. Louis MO-
100 AM CDT WED APR 5 2017
...THE SEVERE THUNDERSTORM WARNING FOR MONROE...NORTHWESTERN
RANDOLPH...WESTERN ST. CLAIR...EASTERN JEFFERSON...NORTHEASTERN STE.
GENEVIEVE AND SOUTHERN ST. LOUIS COUNTIES AND ST. LOUIS CITY HAS
EXPIRED...
The storms which prompted the warning have weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire. However small
hail, gusty winds and heavy rain are still possible with these
thunderstorms.
LAT...LON 3792 9028 3846 9058 3858 9070 3875 9020
3874 9019 3872 9021 3871 9021 3866 9018
3866 9016 3802 8985
TIME...MOT...LOC 0600Z 240DEG 38KT 3865 9034 3840 9016 3814 9008
$$
GlassThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 10:55 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 50 min |
| Apr 4, 11:30 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Iron, Washington | 45 min |
| Apr 5, 1:27 AM CDT | Severe Thunderstorm Warning | LSX | Madison, Sainte Genevieve, Saint Francois | 25 min |
| Apr 5, 2:18 AM CDT | Flash Flood Warning | LSX | Crawford, Iron, Washington | 6 hr |
| Apr 5, 5:26 AM CDT | Areal Flood Advisory | LSX | Saint Louis | 4 hr |
| Apr 5, 8:09 AM CDT | Areal Flood Warning | LSX | Crawford | 3 hr |
| Apr 5, 9:51 AM CDT | River Flood Warning | LSX | Callaway, Osage | 6 days |
| Apr 5, 9:51 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 6 days |
| Apr 5, 9:51 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 5 days |
| Apr 5, 9:51 AM CDT | River Flood Warning | LSX | Boone, Callaway, Cole, Moniteau | 4 days |
| Apr 5, 10:07 AM CDT | River Flood Warning | LSX | Lewis | 3 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Lewis | 8 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Marion | 8 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Ralls | 5 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Pike | 7 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Pike | 9 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Lincoln | 7 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Saint Charles | 11 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Saint Charles | 7 days |
| Apr 5, 11:24 AM CDT | River Flood Warning | LSX | Perry, Sainte Genevieve | 10 days |
| Apr 5, 1:51 PM CDT | River Flood Warning | LSX | Lincoln | 37 hr |
| Apr 5, 4:44 PM CDT | Special Weather Statement | LSX | City of Saint Louis | 46 min |
| Apr 5, 6:11 PM CDT | Areal Flood Advisory | LSX | Saint Louis, City of Saint Louis | 3 hr |
| Apr 5, 2:06 AM CDT | Severe Thunderstorm Warning | LSX | Randolph | 24 min |
| Apr 5, 4:51 AM CDT | Areal Flood Advisory | LSX | Greene, Macoupin | 4 hr |
| Apr 5, 11:46 AM CDT | River Flood Warning | LSX | Brown | 16 days |
| Apr 5, 11:46 AM CDT | River Flood Warning | LSX | Morgan, Pike | 15 days |
| Apr 5, 11:46 AM CDT | River Flood Warning | LSX | Pike, Scott | 19 days |
Nearby
Severe Thunderstorm Warnings in Missouri, 2017Severe Thunderstorm Warnings in Illinois, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.