Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 16, 2021, 6:00 PM CDT for Callaway County, Osage County, Missouri. It was in force for 45 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 16, 2021, 6:00 PM CDT (23:00 UTC)
- Expired
- May 16, 2021, 6:45 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Callaway County, MO, Osage County, MO
The radar
The St Louis radar (KLSX), 112 km from the middle of the area, began a volume at 23:03 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 16, 6:10 PM CDT | TSTM WND GST 55 | Lake Mykee, MO | MEASURED WIND GUST REPORTED BY PUBLIC, IN ADDITION TO NICKEL SIZED HAIL WITH PHOTO. |
| May 16, 6:10 PM CDT | HAIL 0.88 | Lake Mykee, MO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.0 hours before the alert went out and 255 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
- 122 J/kg
- Mixed-layer CIN
- -133 J/kg
- Mixed-layer LCL
- 1041 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
854
WUUS53 KLSX 162300
SVRLSX
MOC027-151-162345-
/O.NEW.KLSX.SV.W.0043.210516T2300Z-210516T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
600 PM CDT Sun May 16 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Southern Callaway County in central Missouri...
Northeastern Osage County in central Missouri...
* Until 645 PM CDT.
* At 559 PM CDT, a severe thunderstorm was located over Lake Mykee,
moving east at 20 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...
Chamois.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3887 9178 3865 9168 3857 9207 3857 9214
3858 9217 3870 9223
TIME...MOT...LOC 2259Z 247DEG 18KT 3866 9209
HAIL...1.00IN
WIND...60MPH
$$
Carney1 follow-up statement
357
WWUS53 KLSX 162320
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
620 PM CDT Sun May 16 2021
MOC027-151-162345-
/O.CON.KLSX.SV.W.0043.000000T0000Z-210516T2345Z/
Callaway MO-Osage MO-
620 PM CDT Sun May 16 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR SOUTHERN CALLAWAY AND NORTHEASTERN OSAGE COUNTIES...
At 620 PM CDT, a severe thunderstorm was located 7 miles east of New
Bloomfield, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Holts Summit, New Bloomfield, Chamois, Lake Mykee Town, Lake Mykee,
Mokane, Portland, Tebbetts, Reform and Steedman.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3887 9178 3865 9168 3859 9209 3872 9216
TIME...MOT...LOC 2320Z 252DEG 18KT 3869 9196
HAIL...1.00IN
WIND...60MPH
$$
CarneyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 4:04 PM CDT | Severe Thunderstorm Warning | LSX | Moniteau | 41 min |
| May 16, 4:49 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway | 41 min |
| May 16, 6:43 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Gasconade, Montgomery, Osage | 23 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.