Alert archive / Missouri / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 249, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Aug 12, 2023, 1:51 AM CDT for 4 counties in 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 counties it named.
The facts
- Issued
- Aug 12, 2023, 1:51 AM CDT (06:51 UTC)
- Expired
- Aug 12, 2023, 2:30 AM CDT
- In force
- 39 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Chariton County, MO, Linn County, MO, Macon County, MO, Randolph County, MO
The radar
The Pleasant Hill radar (KEAX), 159 km from the middle of the area, began a volume at 06:55 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 |
|---|---|---|---|
| Aug 11, 9:23 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 6.9 hours before the alert went out and 257 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
- 3508 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1886 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 14.2
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 12, 12:32 AM CDT, 1 hour 19 minutes earlier.
Area forecast discussion, Aug 12, 12:32 AM CDT, 1 hour 19 minutes before
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Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 309 AM CDT Fri Aug 11 2023 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-121000- Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS- Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler- Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton- Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton- Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis- Cooper-Bates-Henry- 309 AM CDT Fri Aug 11 2023 This hazardous weather outlook is for northwest...north central and west central Missouri...as well as extreme eastern Kansas. .DAY ONE...Today and Tonight Scattered thunderstorms across north central Missouri this morning. A second round of thunderstorms is forecast to develop across portions of eastern Kansas into western Missouri late this afternoon and through the evening. A slight risk of severe storms is forecast with this activity. Damaging wind gusts and damaging hail are the greatest concern with the strongest storms. Storms will likely continue through midnight. More detailed information can be accessed at... https://www.weather.gov/eax/hwo .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a slight risk for severe thunderstorms Sunday afternoon across portions of eastern Kansas and western Missouri. A few storms may be strong to severe, with damaging winds and hail the greatest concern at this time. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
In the hours before
Local storm report, Aug 11, 11:54 PM CDT, 1 hour 57 minutes before
Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
1154 PM CDT Fri Aug 11 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1150 PM Hail 2 S Tindall 40.13N 93.60W
08/11/2023 E1.00 inch Grundy MO Emergency Mngr
Reported on highway 65.
&&
SMSpecial weather statement, Aug 11, 11:56 PM CDT, 1 hour 55 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1156 PM CDT Fri Aug 11 2023
MOZ024-025-032-120545-
Macon MO-Chariton MO-Linn MO-
1156 PM CDT Fri Aug 11 2023
...A strong thunderstorm will impact portions of northeastern
Chariton, southern Linn and southwestern Macon Counties through 1245
AM CDT...
At 1156 PM CDT, Doppler radar was tracking a strong thunderstorm over
Laclede, or near Brookfield, moving east at 30 mph.
HAZARD...Winds in excess of 40 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Brookfield, Marceline, Bucklin, Laclede, Callao, Linneus, New
Cambria, Rothville, Wien, Saint Catherine and Prairie Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
north central Missouri.
&&
LAT...LON 3961 9267 3961 9269 3950 9270 3975 9330
3993 9321 3984 9261
TIME...MOT...LOC 0456Z 289DEG 27KT 3980 9313
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH
BMWSpecial weather statement, Aug 11, 11:58 PM CDT, 1 hour 53 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1158 PM CDT Fri Aug 11 2023
MOZ015-016-024-120545-
Grundy MO-Linn MO-Sullivan MO-
1158 PM CDT Fri Aug 11 2023
...A strong thunderstorm will impact portions of northwestern Linn,
eastern Grundy and southwestern Sullivan Counties through 1245 AM
CDT...
At 1157 PM CDT, Doppler radar was tracking a strong thunderstorm near
Galt, or 8 miles east of Trenton, moving east at 30 mph.
HAZARD...Winds in excess of 40 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Trenton, Browning, Galt, Laredo, Purdin, Humphreys, Osgood and Reger.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
north central Missouri.
&&
LAT...LON 4006 9358 4023 9353 4014 9301 3989 9310
TIME...MOT...LOC 0457Z 289DEG 27KT 4011 9346
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH
BMWSpecial weather statement, Aug 12, 12:07 AM CDT, 1 hour 44 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1207 AM CDT Sat Aug 12 2023
MOZ003-005-006-015-120545-
Grundy MO-Mercer MO-Worth MO-Harrison MO-
1207 AM CDT Sat Aug 12 2023
...A strong thunderstorm will impact portions of Worth, northwestern
Grundy, southwestern Mercer and central Harrison Counties through
1245 AM CDT...
At 1207 AM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southeast of Irena, or 16 miles south of Mount Ayr, moving east
at 25 mph.
HAZARD...Winds in excess of 40 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Trenton, Bethany, Princeton, Grant City, Ridgeway, Eagleville,
Cainsville, Spickard, Irena, Blythedale, Mount Moriah, Tindall,
Brimson, Allendale, Denver, Modena, Hatfield, Mill Grove and
Martinsville.
This includes Interstate 35 in Missouri between mile markers 92 and
108.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
north central and northwestern Missouri.
&&
LAT...LON 4038 9349 4006 9358 4035 9422 4039 9422
4038 9428 4054 9464 4057 9463 4057 9425
TIME...MOT...LOC 0507Z 289DEG 23KT 4048 9423
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH
BMWSpecial weather statement, Aug 12, 12:12 AM CDT, 1 hour 39 minutes before
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</html>Local storm report, Aug 12, 1:10 AM CDT, 41 minutes before
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</html>The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 9:14 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, Grundy, Harrison, Mercer | 46 min |
| Aug 11, 9:24 PM CDT | Severe Thunderstorm Warning | EAX | Gentry, Harrison, Worth | 36 min |
| Aug 11, 9:48 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, DeKalb, Gentry, Harrison | 42 min |
| Aug 11, 9:51 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, Grundy, Harrison, Livingston | 39 min |
| Aug 11, 9:57 PM CDT | Special Weather Statement | EAX | Adair, Putnam, Sullivan | 48 min |
| Aug 11, 10:25 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, Grundy, Linn, Livingston | 50 min |
| Aug 11, 10:28 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Daviess, DeKalb, Grundy | 47 min |
| Aug 11, 10:34 PM CDT | Severe Thunderstorm Warning | EAX | Adair, Putnam, Schuyler, Sullivan | 41 min |
| Aug 11, 10:36 PM CDT | Special Weather Statement | EAX | Harrison | 39 min |
| Aug 11, 10:42 PM CDT | Special Weather Statement | EAX | Linn | 48 min |
| Aug 11, 10:50 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, Grundy, Harrison, Mercer | 25 min |
| Aug 11, 11:09 PM CDT | Special Weather Statement | EAX | Mercer | 51 min |
| Aug 11, 11:10 PM CDT | Flash Flood Warning | EAX | Gentry, Harrison, Worth | 6 hr |
| Aug 11, 11:13 PM CDT | Severe Thunderstorm Warning | EAX | Chariton, Grundy, Linn, Livingston | 47 min |
| Aug 11, 11:15 PM CDT | Tornado Warning | EAX | Adair, Linn, Macon, Sullivan | 15 min |
| Aug 11, 11:19 PM CDT | Severe Thunderstorm Warning | EAX | Grundy, Harrison, Mercer | 41 min |
| Aug 11, 11:22 PM CDT | Special Weather Statement | EAX | Adair | 23 min |
| Aug 11, 11:28 PM CDT | Tornado Warning | EAX | Adair, Linn, Sullivan | 11 min |
| Aug 11, 11:56 PM CDT | Special Weather Statement | EAX | Linn | 49 min |
| Aug 11, 11:58 PM CDT | Special Weather Statement | EAX | Sullivan | 47 min |
| Aug 12, 12:07 AM CDT | Special Weather Statement | EAX | Harrison, Worth | 38 min |
| Aug 12, 12:08 AM CDT | Flash Flood Warning | EAX | Adair, Daviess, Grundy, Harrison, Linn, Livingston and 4 more | 6 hr |
| Aug 12, 12:10 AM CDT | Severe Thunderstorm Warning | EAX | Grundy, Linn, Sullivan | 35 min |
| Aug 12, 12:12 AM CDT | Special Weather Statement | EAX | Macon | 33 min |
| Aug 12, 12:30 AM CDT | Severe Thunderstorm Warning | EAX | Grundy, Linn, Livingston, Sullivan | 30 min |
| Aug 12, 12:37 AM CDT | Severe Thunderstorm Warning | EAX | Gentry, Harrison, Worth | 38 min |
| Aug 12, 12:54 AM CDT | Severe Thunderstorm Warning | EAX | Linn | 36 min |
| Aug 12, 1:11 AM CDT | Severe Thunderstorm Warning | EAX | Daviess, Gentry, Harrison, Worth | 34 min |
| Aug 12, 1:17 AM CDT | Severe Thunderstorm Warning | EAX | Chariton, Linn, Macon | 43 min |
| Aug 12, 2:25 AM CDT | Severe Thunderstorm Warning | EAX | Chariton, Howard, Randolph | 35 min |
| Aug 12, 3:07 AM CDT | Areal Flood Advisory | EAX | Chariton, Linn, Macon, Randolph | 6 hr |
| Aug 12, 4:50 AM CDT | Areal Flood Warning | EAX | Gentry, Harrison, Worth | 6 hr |
| Aug 12, 5:11 AM CDT | Special Weather Statement | EAX | Bates, Henry, Johnson | 49 min |
| Aug 12, 5:44 AM CDT | Areal Flood Warning | EAX | Adair, Daviess, Grundy, Harrison, Linn, Livingston and 4 more | 5 hr |
| Aug 12, 8:55 AM CDT | River Flood Warning | EAX | Daviess, Livingston | 19 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2023Every severe thunderstorm warning in 2023
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.