Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 85, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 20, 2021, 10:22 PM CDT for Audrain County, Boone County, Callaway County, Missouri. It was in force for 38 min. 24 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
- Jun 20, 2021, 10:22 PM CDT (03:22 UTC)
- Expired
- Jun 20, 2021, 11:00 PM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Audrain County, MO, Boone County, MO, Callaway County, MO
The radar
The St Louis radar (KLSX), 140 km from the middle of the area, began a volume at 03:24 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 20, 10:24 PM CDT | TSTM WND DMG | 1 Wsw Midway, MO | LARGE TREE INTO HOME ALONG SOUTH TRAILS TERRACE. |
| Jun 20, 10:24 PM CDT | TSTM WND DMG | 3 Ne Midway, MO | MULTIPLE TREE BLOCKING RT E FORCING CLOSURE OF ROAD. |
| Jun 20, 10:26 PM CDT | TSTM WND DMG | 1 Ene Columbia, MO | TREE INTO POWER LINES AT AMELIA AND MONT VERNON STREET. |
| Jun 20, 10:26 PM CDT | TSTM WND DMG | 1 Ne Columbia, MO | TREE DOWN OVER ROADWAY AT COLLEGE AND WILKES ROADS. |
| Jun 20, 10:26 PM CDT | TSTM WND DMG | 1 Nne Columbia, MO | CORRECTS PREVIOUS TSTM WND DMG REPORT. 25 BY 75 FT SECTION OF BOONE ELECTRIC COOP BUILDING BLOWN OFF. |
| Jun 20, 10:26 PM CDT | TSTM WND DMG | 1 Nne Columbia, MO | ROOF OFF OF BUILDING. |
| Jun 20, 10:26 PM CDT | TSTM WND DMG | 3 Nne Columbia, MO | LARGE TREE BLOCKING ROADWAY. |
| Jun 20, 10:26 PM CDT | TSTM WND DMG | 3 Ssw Columbia, MO | LARGE TREE PARTIALLY BLOCKING ROADWAY. |
| Jun 20, 10:26 PM CDT | TSTM WND DMG | 3 Sw Columbia, MO | TREE AND POWER LINES DOWN ON HILLSHIRE COURT. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 1 E Columbia, MO | LARGE TREE LIMB BLOCKING ROADWAY AT WILLIAMS AND BRIGHTON ST. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 1 E Columbia, MO | TREE DOWN OVER OLD 63 AND WALNUT. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 1 Ene Columbia, MO | LARGE TREE DOWNED ONTO PRIVATE PARKING LOT. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 1 N Columbia, MO | LARGE TREE ACROSS 8TH STREET. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 1 Se Columbia, MO | LARGE TREE ON HOME ALONG THILLY ROAD. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 1 Wnw Columbia, MO | *** 1 INJ *** TREE FELL AND STRUCK A PERSON ON THE HEAD ALONG COOK AVENUE. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 1 Wnw Columbia, MO | *** 1 INJ *** TREE STRUCK A PERSON ON THE HEAD ALONG COOK STREET. |
| Jun 20, 10:27 PM CDT | TSTM WND DMG | 2 Ese Columbia, MO | TREES DOWNED ONTO ROADWAY. |
| Jun 20, 10:28 PM CDT | TSTM WND DMG | 1 Nne Columbia, MO | POWERS LINES DOWN ONTO ROADWAY NEAR PANNELL ST AND BUSINESS 70. |
| Jun 20, 10:28 PM CDT | TSTM WND DMG | 4 Se Columbia, MO | TREE DOWN BLOCKING NEW HAVEN ROAD. |
| Jun 20, 10:28 PM CDT | TSTM WND DMG | 6 Sse Columbia, MO | TREE DOWNED ONTO POWERLINES. |
| Jun 20, 10:29 PM CDT | TSTM WND DMG | 5 Se Columbia, MO | TREE ACROSS ROADWAY. |
| Jun 20, 10:48 PM CDT | TSTM WND DMG | 1 Nne Kingdom City, MO | TREES DOWN IN KINGDOM CITY. |
| Jun 20, 10:54 PM CDT | TSTM WND DMG | 5 Ese Kingdom City, MO | TREE OVER Z HIGHWAY. |
| Jun 20, 10:57 PM CDT | TSTM WND DMG | 5 Ese Kingdom City, MO | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 5 ESE KINGDOM CITY. TREE OVER Z HIGHWAY. |
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 |
|---|---|---|---|
| Jun 20, 8:10 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 3.4 hours before the alert went out and 270 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
- 1346 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1683 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 264 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 5.8
The text
As transmitted.
884
WUUS53 KLSX 210322
SVRLSX
MOC007-019-027-210400-
/O.NEW.KLSX.SV.W.0085.210621T0322Z-210621T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1022 PM CDT Sun Jun 20 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Boone County in central Missouri...
Southwestern Audrain County in central Missouri...
Callaway County in central Missouri...
* Until 1100 PM CDT.
* At 1021 PM CDT, severe thunderstorms were located along a line
extending from near Centralia to near Midway, moving east at 45
mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Severe thunderstorms will be near...
Hallsville around 1025 PM CDT.
Columbia Regional Airport around 1040 PM CDT.
Other locations in the path of these severe thunderstorms include
Mexico, Fulton and Shamrock.
This includes Interstate 70 in Missouri between exits 115 and 161.
This also includes Rock Bridge State Park, Finger Lakes State Park,
and Jewell Cemetery Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3899 9256 3925 9243 3925 9238 3908 9163
3895 9164 3872 9182 3889 9248 3891 9248
3898 9257
TIME...MOT...LOC 0321Z 285DEG 40KT 3920 9219 3892 9249
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
$$
19The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:41 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Shelby | 49 min |
| Jun 20, 9:07 PM CDT | Tornado Warning | LSX | Marion, Shelby | 38 min |
| Jun 20, 9:17 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Monroe, Ralls, Shelby | 43 min |
| Jun 20, 9:42 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Monroe | 48 min |
| Jun 20, 9:59 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Monroe, Pike, Ralls | 46 min |
| Jun 20, 10:10 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Monroe, Montgomery, Pike, Ralls | 50 min |
| Jun 20, 10:27 PM CDT | Areal Flood Advisory | LSX | Audrain, Boone, Monroe | 3 hr |
| Jun 20, 10:42 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau | 48 min |
| Jun 20, 10:55 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Montgomery | 35 min |
| Jun 20, 11:29 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Franklin, Gasconade, Lincoln and 3 more | 31 min |
| Jun 20, 11:41 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles | 19 min |
| Jun 20, 11:59 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Montgomery, Osage, Warren | 31 min |
| Jun 21, 12:34 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau | 26 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 2021Every severe thunderstorm warning in 2021
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.