Alert archive / Missouri / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 142, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 23, 2017, 12:21 AM CDT for Boone County, Cole County, Moniteau County, Missouri. It was in force for 54 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
- Jul 23, 2017, 12:21 AM CDT (05:21 UTC)
- Expired
- Jul 23, 2017, 1:15 AM CDT
- In force
- 54 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Boone County, MO, Cole County, MO, Moniteau County, MO
The radar
The St Louis radar (KLSX), 148 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 |
|---|---|---|---|
| Jul 23, 12:55 AM CDT | TSTM WND DMG | 3 W Columbia, MO | LARGE TREE DOWN ACROSS ROAD |
| Jul 23, 1:15 AM CDT | TSTM WND DMG | Columbia, MO | MULTIPLE TREES DOWN. SOME BLOCKING ROADWAYS |
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 00:00Z, 5.4 hours before the alert went out and 235 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
- 2714 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1672 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
308
WUUS53 KLSX 230521
SVRLSX
MOC019-051-135-230615-
/O.NEW.KLSX.SV.W.0142.170723T0521Z-170723T0615Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1221 AM CDT SUN JUL 23 2017
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Cole County in central Missouri...
Boone County in central Missouri...
Moniteau County in central Missouri...
* Until 115 AM CDT.
* At 1219 AM CDT, severe thunderstorms were located along a line
extending from near Keytesville to near New Franklin to near
Otterville, moving east at 40 mph. Severe thunderstorms were also
preceding the line into central Boone County and moving east
around 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.
* Locations impacted include...
Columbia, Jefferson City, California, Centralia, Ashland, Tipton,
Columbia Regional Airport, Wardsville, Hallsville, St. Martins,
Sturgeon, Russellville, Jamestown, Clarksburg, Centertown, St.
Thomas, Easley, High Point, Murry and McGirk.
This includes Interstate 70 in Missouri between exits 115 and 133.
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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3868 9262 3892 9250 3900 9256 3925 9243
3924 9212 3906 9212 3890 9217 3881 9215
3870 9223 3860 9220 3858 9217 3834 9220
3832 9226 3834 9229 3834 9240 3843 9241
3843 9262 3860 9284 3868 9284
TIME...MOT...LOC 0519Z 268DEG 34KT 3940 9301 3902 9282 3866 9293
HAIL...1.00IN
WIND...60MPH
$$
Carney1 follow-up statement
050
WWUS53 KLSX 230547
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1247 AM CDT SUN JUL 23 2017
MOC019-051-135-230615-
/O.CON.KLSX.SV.W.0142.000000T0000Z-170723T0615Z/
Cole MO-Boone MO-Moniteau MO-
1247 AM CDT SUN JUL 23 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR NORTHWESTERN COLE...BOONE AND CENTRAL MONITEAU COUNTIES...
At 1245 AM CDT, severe thunderstorms were located along a line
extending from near Salisbury to near Rocheport to Clarksburg,
moving east at 40 mph. Additional severe thunderstorms extend east
from the line across central Boone County.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Columbia, California, Centralia, Ashland, Tipton, Columbia Regional
Airport, Hallsville, Sturgeon, Jamestown, Clarksburg, Centertown,
Easley, Murry, Midway, Harrisburg, Marion, Hartsburg, Lupus, McBaine
and Elston.
This also includes Rock Bridge State Park, Finger Lakes State Park,
and Jewell Cemetery Historic Site.
This includes Interstate 70 in Missouri between exits 115 and 133.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3892 9250 3900 9256 3925 9243 3924 9212
3906 9212 3890 9217 3881 9215 3870 9223
3861 9222 3862 9284 3868 9284 3868 9262
TIME...MOT...LOC 0545Z 269DEG 34KT 3941 9273 3903 9254 3867 9265
HAIL...1.00IN
WIND...60MPH
$$
CarneyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 9:42 PM CDT | Special Weather Statement | LSX | Saint Louis | 48 min |
| Jul 22, 10:33 PM CDT | Special Weather Statement | LSX | City of Saint Louis | 42 min |
| Jul 22, 11:34 PM CDT | Special Weather Statement | LSX | City of Saint Louis | 41 min |
| Jul 23, 12:54 AM CDT | Severe Thunderstorm Warning | LSX | Callaway | 51 min |
| Jul 23, 1:08 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Monroe, Shelby | 52 min |
| Jul 23, 1:37 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Gasconade, Montgomery, Warren | 38 min |
| Jul 23, 1:46 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Warren | 44 min |
| Jul 23, 1:49 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Monroe, Montgomery, Pike, Ralls | 41 min |
| Jul 23, 2:17 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike, Saint Charles, Warren | 43 min |
| Jul 23, 2:38 AM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 52 min |
| Jul 23, 2:48 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike, Saint Charles, Saint Louis | 42 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 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.