Alert archive / Missouri / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 21, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 27, 2020, 10:21 PM CDT for 4 counties in Missouri. It was in force for 39 min. 32 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
- Mar 27, 2020, 10:21 PM CDT (03:21 UTC)
- Expired
- Mar 27, 2020, 11:00 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 2.0 in
- Wind
- 60.0 mph
Counties Boone County, MO, Callaway County, MO, Cole County, MO, Osage County, MO
The radar
The St Louis radar (KLSX), 117 km from the middle of the area, began a volume at 03:23 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 |
|---|---|---|---|
| Mar 27, 10:24 PM CDT | HAIL 0.75 | 3 Se Elston, MO | REPORT FROM MPING: DIME (0.75 IN.). |
| Mar 27, 10:24 PM CDT | HAIL 1 | 2 W Jefferson City, MO | REPORT FROM MPING: QUARTER (1.00 IN.). |
| Mar 27, 10:24 PM CDT | HAIL 1 | 3 Se Elston, MO | REPORT FROM MPING: QUARTER (1.00 IN.). |
| Mar 27, 10:25 PM CDT | HAIL 1.5 | 4 Wnw Jefferson City, MO | LARGEST HAIL WAS 1.5 INCHES, TIME ESTIMATED FROM RADAR. |
| Mar 27, 10:26 PM CDT | HAIL 1.75 | 3 Nw Jefferson City, MO | |
| Mar 27, 10:27 PM CDT | HAIL 1 | 3 Ese Elston, MO | |
| Mar 27, 10:27 PM CDT | HAIL 3 | 4 E Elston, MO | SPOTTER REPORTED HAIL STONES WERE 2 TO 2.5 INCHES WITH FEW THAT MEASURED 3 INCHES. |
| Mar 27, 10:28 PM CDT | HAIL 1.75 | 1 Wnw Jefferson City, MO | |
| Mar 27, 10:28 PM CDT | HAIL 1.75 | 3 Nnw Jefferson City, MO | |
| Mar 27, 10:28 PM CDT | HAIL 1.75 | 4 Nnw Jefferson City, MO | |
| Mar 27, 10:28 PM CDT | HAIL 2.25 | 4 Se Saint Martins, MO | |
| Mar 27, 10:28 PM CDT | HAIL 2.5 | 1 Wnw Jefferson City, MO | TRAINED SPOTTER CALLED BACK AFTER A PREVIOUS REPORT. SPOTTER MEASURED HAIL 2.5 INCHES IN DIAMETER. OBSERVATION WAS TAKEN OFF WESTWOOD DRIVE. |
| Mar 27, 10:30 PM CDT | HAIL 1.75 | 3 Se Elston, MO | REPORT FROM MPING: GOLF BALL (1.75 IN.). |
| Mar 27, 10:30 PM CDT | HAIL 1.75 | 3 Wnw Jefferson City, MO | |
| Mar 27, 10:30 PM CDT | HAIL 2 | 1 Nw Jefferson City, MO | |
| Mar 27, 10:30 PM CDT | HAIL 2.5 | Jefferson City, MO | |
| Mar 27, 10:30 PM CDT | HAIL 2.75 | 2 Wnw Jefferson City, MO | ALONG HIGHWAY 50. |
| Mar 27, 10:30 PM CDT | HAIL 3 | 1 W Jefferson City, MO | 3.5 INCH MEASURED HAILSTONE, TIME ESTIMATED FROM RADAR. |
| Mar 27, 10:31 PM CDT | HAIL 2.5 | 2 W Jefferson City, MO | REPORT FROM MPING: TENNIS BALL (2.50 IN.). |
| Mar 27, 10:32 PM CDT | HAIL 1.25 | Holts Summit, MO | |
| Mar 27, 10:33 PM CDT | HAIL 1.75 | 1 S Lake Mykee, MO | |
| Mar 27, 10:34 PM CDT | HAIL 1 | 1 E Jefferson City, MO | REPORT FROM MPING: QUARTER (1.00 IN.) TIME ESTIMATED FROM RADAR. |
| Mar 27, 10:34 PM CDT | HAIL 1.75 | 1 E Jefferson City, MO | REPORT FROM MPING: GOLF BALL (1.75 IN.). |
| Mar 27, 10:34 PM CDT | HAIL 1.75 | 3 Nw Jefferson City, MO | REPORT FROM MPING: GOLF BALL (1.75 IN.). |
| Mar 27, 10:35 PM CDT | HAIL 0.5 | 1 Sw Lake Mykee, MO | REPORT FROM MPING: HALF-INCH (0.50 IN.). |
| Mar 27, 10:35 PM CDT | HAIL 1.75 | 1 E Jefferson City, MO | REPORT FROM MPING: GOLF BALL (1.75 IN.). |
| Mar 27, 10:35 PM CDT | HAIL 1.75 | 1 Nnw Jefferson City, MO | MEASURED HAIL 1 1/2 X 1 3/4 INCH IN NORTHWEST JEFFERSON. |
| Mar 27, 10:35 PM CDT | HAIL 3 | 2 Nnw Jefferson City, MO | |
| Mar 27, 10:36 PM CDT | HAIL 1 | 1 Sw Lake Mykee, MO | |
| Mar 27, 10:45 PM CDT | HAIL 3 | 1 Ne Jefferson City, MO | MULTIPLE DENTS IN VEHICLES, WINDSHIELDS BUSTED OUT. |
| Mar 27, 10:49 PM CDT | HAIL 1.75 | 2 W Holts Summit, MO | |
| Mar 27, 10:50 PM CDT | HAIL 2.75 | Chamois, MO |
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 |
|---|---|---|---|
| Mar 27, 10:16 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 3.4 hours before the alert went out and 251 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
- 1120 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 1066 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 3.8
The text
As transmitted.
083
WUUS53 KLSX 280321
SVRLSX
MOC019-027-051-151-280400-
/O.NEW.KLSX.SV.W.0021.200328T0321Z-200328T0400Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1021 PM CDT Fri Mar 27 2020
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Central Cole County in central Missouri...
South central Boone County in central Missouri...
Southern Callaway County in central Missouri...
Northeastern Osage County in central Missouri...
* Until 1100 PM CDT.
* At 1021 PM CDT, a severe thunderstorm was located near Jefferson
City, moving northeast at 65 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Jefferson City, Fulton, Holts Summit, Wardsville, New Bloomfield,
Chamois, Lake Mykee Town, Lake Mykee, Williamsburg, Mokane,
Morrison, Wainwright, Portland, Osage City, Frankenstein, Tebbetts,
Guthrie, Reform, Steedman and Bonnots Mill.
This includes Interstate 70 in Missouri near exit 161.
This also includes Clarks Hill/Norton Historic Site and Jefferson
Landing Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!
&&
LAT...LON 3868 9233 3895 9164 3860 9164 3849 9224
TIME...MOT...LOC 0321Z 245DEG 55KT 3859 9225
HAIL...2.00IN
WIND...60MPH
$$
Glass3 follow-up statements
699
WWUS53 KLSX 280330
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1030 PM CDT Fri Mar 27 2020
MOC019-027-051-151-280400-
/O.CON.KLSX.SV.W.0021.000000T0000Z-200328T0400Z/
Cole MO-Boone MO-Callaway MO-Osage MO-
1030 PM CDT Fri Mar 27 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR CENTRAL COLE...SOUTH CENTRAL BOONE...SOUTHERN CALLAWAY AND
NORTHEASTERN OSAGE COUNTIES...
At 1029 PM CDT, a severe thunderstorm was located over Holts Summit,
moving northeast at 65 mph.
This is a very dangerous storm.
HAZARD...Three inch hail and 60 mph wind gusts.
SOURCE...Trained weather spotters. Very large hail to 3 inches has
been reported with this storm in Jefferson City.
IMPACT...People and animals outdoors will be severely injured.
Expect shattered windows, extensive damage to roofs,
siding, and vehicles.
Locations impacted include...
Jefferson City, Fulton, Holts Summit, Wardsville, New Bloomfield,
Chamois, Lake Mykee Town, Lake Mykee, Williamsburg, Mokane, Morrison,
Wainwright, Portland, Osage City, Frankenstein, Tebbetts, Guthrie,
Reform, Steedman and Bonnots Mill.
This also includes Clarks Hill/Norton Historic Site and Jefferson
Landing Historic Site.
This includes Interstate 70 in Missouri near exit 161.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.
&&
LAT...LON 3868 9233 3895 9164 3860 9164 3849 9224
TIME...MOT...LOC 0329Z 245DEG 55KT 3865 9209
HAIL...3.00IN
WIND...60MPH
$$
Glass226
WWUS53 KLSX 280335
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1035 PM CDT Fri Mar 27 2020
MOC019-051-280344-
/O.CAN.KLSX.SV.W.0021.000000T0000Z-200328T0400Z/
Cole MO-Boone MO-
1035 PM CDT Fri Mar 27 2020
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL COLE AND SOUTH CENTRAL
BOONE COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
central and east central Missouri.
LAT...LON 3874 9218 3895 9164 3860 9164 3857 9201
3856 9205 3857 9213 3860 9220 3863 9220
3864 9222 3870 9223
TIME...MOT...LOC 0334Z 246DEG 52KT 3866 9201
$$
MOC027-151-280400-
/O.CON.KLSX.SV.W.0021.000000T0000Z-200328T0400Z/
Callaway MO-Osage MO-
1035 PM CDT Fri Mar 27 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTHERN CALLAWAY AND NORTHEASTERN OSAGE COUNTIES...
At 1034 PM CDT, a severe thunderstorm was located near Lake Mykee,
moving northeast at 60 mph.
This is a very dangerous storm.
HAZARD...Three inch hail and 60 mph wind gusts.
SOURCE...Trained weather spotters. Numerous reports of very large
hail up to 3 inches in diameter.
IMPACT...People and animals outdoors will be severely injured.
Expect shattered windows, extensive damage to roofs,
siding, and vehicles.
Locations impacted include...
Jefferson City, Fulton, Holts Summit, New Bloomfield, Chamois, Lake
Mykee Town, Lake Mykee, Williamsburg, Mokane, Morrison, Wainwright,
Portland, Tebbetts, Guthrie, Reform and Steedman.
This includes Interstate 70 in Missouri near exit 161.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.
&&
LAT...LON 3874 9218 3895 9164 3860 9164 3857 9201
3856 9205 3857 9213 3860 9220 3863 9220
3864 9222 3870 9223
TIME...MOT...LOC 0334Z 246DEG 52KT 3866 9201
HAIL...3.00IN
WIND...60MPH
$$
Glass151
WWUS53 KLSX 280350
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1050 PM CDT Fri Mar 27 2020
MOC027-151-280400-
/O.CON.KLSX.SV.W.0021.000000T0000Z-200328T0400Z/
Callaway MO-Osage MO-
1050 PM CDT Fri Mar 27 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTHEASTERN CALLAWAY AND NORTHEASTERN OSAGE COUNTIES...
At 1049 PM CDT, a severe thunderstorm was located over Chamois,
moving east at 55 mph.
This is a very dangerous storm.
HAZARD...Three inch hail and 60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...People and animals outdoors will be severely injured.
Expect shattered windows, extensive damage to roofs,
siding, and vehicles.
Locations impacted include...
Chamois, Mokane, Reform, Steedman and Portland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.
&&
LAT...LON 3875 9199 3888 9165 3860 9164 3861 9192
3868 9197 3870 9197
TIME...MOT...LOC 0349Z 249DEG 48KT 3870 9179
HAIL...3.00IN
WIND...60MPH
$$
GlassThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 8:59 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Franklin, Gasconade, Osage | 46 min |
| Mar 27, 9:50 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 40 min |
| Mar 27, 10:53 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Franklin, Gasconade, Montgomery, Osage, Warren | 41 min |
| Mar 27, 11:20 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Saint Charles, Warren | 40 min |
| Mar 27, 11:43 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles | 47 min |
| Mar 28, 11:59 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Iron, Washington | 46 min |
| Mar 28, 12:03 PM CDT | Tornado Warning | LSX | Iron, Washington | 42 min |
| Mar 28, 12:45 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois | 21 min |
| Mar 28, 3:23 PM CDT | Wind Advisory | LSX | Audrain, Boone, Callaway, Knox, Lewis, Lincoln and 10 more | 26 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2020Every severe thunderstorm warning in 2020
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.