Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 53, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 2021, 1:51 PM CDT for Crawford County, Franklin County, Washington County, Missouri. It was in force for 39 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 27, 2021, 1:51 PM CDT (18:51 UTC)
- Expired
- May 27, 2021, 2:30 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Crawford County, MO, Franklin County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 85 km from the middle of the area, began a volume at 18:52 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 27, 11:26 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 6.9 hours before the alert went out and 269 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
- 295 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 964 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
280
WUUS53 KLSX 271851
SVRLSX
MOC055-071-221-271930-
/O.NEW.KLSX.SV.W.0053.210527T1851Z-210527T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
151 PM CDT Thu May 27 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Crawford County in east central Missouri...
Washington County in east central Missouri...
Southern Franklin County in east central Missouri...
* Until 230 PM CDT.
* At 151 PM CDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Gerald to near Leasburg to near
Cherryville, moving east at 25 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.
* Severe thunderstorms will be near...
Oak Grove, Sullivan and Anthonies Mill around 210 PM CDT.
Other locations in the path of these severe thunderstorms include
Miramiguoa Park, St. Clair, Courtois, Parkway, Lonedell and
Richwoods.
This includes Interstate 44 in Missouri between exits 214 and 242.
This also includes Onondaga Cave State Park, Dillard Mill Historic
Site, Robertsville State Park, and Meramec State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3770 9131 3779 9131 3779 9148 3808 9132
3829 9137 3839 9137 3844 9078 3833 9075
3820 9078 3813 9070 3807 9069 3774 9088
3774 9114 3770 9115
TIME...MOT...LOC 1851Z 271DEG 24KT 3832 9128 3808 9122 3785 9136
HAIL...1.00IN
WIND...60MPH
$$
Carney2 follow-up statements
095
WWUS53 KLSX 271913
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
213 PM CDT Thu May 27 2021
MOC055-071-221-271930-
/O.CON.KLSX.SV.W.0053.000000T0000Z-210527T1930Z/
Crawford MO-Washington MO-Franklin MO-
213 PM CDT Thu May 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR EASTERN CRAWFORD...WASHINGTON AND SOUTHEASTERN FRANKLIN
COUNTIES...
At 213 PM CDT, severe thunderstorms were located along a line
extending from St. Clair to 6 miles southwest of Richwoods to 7 miles
east of Cherryville, moving east at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Lonedell, Richwoods, Old Mines and Potosi.
This also includes Onondaga Cave State Park, Dillard Mill Historic
Site, Robertsville State Park, and Meramec State Park.
This includes Interstate 44 in Missouri between exits 225 and 242.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3779 9135 3785 9137 3807 9124 3828 9124
3839 9118 3844 9078 3833 9075 3820 9078
3813 9070 3807 9069 3774 9088 3774 9114
3770 9115 3770 9131 3779 9131
TIME...MOT...LOC 1913Z 269DEG 40KT 3836 9095 3808 9089 3788 9116
HAIL...1.00IN
WIND...60MPH
$$
Carney331
WWUS53 KLSX 271927
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
227 PM CDT Thu May 27 2021
MOC055-071-221-271937-
/O.EXP.KLSX.SV.W.0053.000000T0000Z-210527T1930Z/
Crawford MO-Washington MO-Franklin MO-
227 PM CDT Thu May 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CRAWFORD...WASHINGTON
AND SOUTHEASTERN FRANKLIN COUNTIES WILL EXPIRE AT 230 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
southeastern and east central Missouri.
LAT...LON 3779 9135 3785 9137 3807 9124 3828 9124
3839 9118 3844 9078 3833 9075 3820 9078
3813 9070 3807 9069 3774 9088 3774 9114
3770 9115 3770 9131 3779 9131
TIME...MOT...LOC 1927Z 271DEG 24KT 3836 9084 3808 9079 3788 9106
$$
CarneyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 11:13 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 47 min |
| May 27, 11:50 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Lincoln, Saint Charles, Saint Louis, Warren, City of Saint Louis | 55 min |
| May 27, 12:39 PM CDT | Areal Flood Advisory | LSX | Franklin, Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 3 hr |
| May 27, 1:09 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Louis | 51 min |
| May 27, 1:24 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Gasconade | 51 min |
| May 27, 2:46 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve | 29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.