Alert archive / Missouri / Special Weather Statements in 2017
Special Weather Statement, NWS Kansas City, MO
NWS Kansas City, MO issued this special weather statement at Aug 21, 2017, 3:34 PM CDT for Clay County, Missouri. It was in force for 26 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
- Aug 21, 2017, 3:34 PM CDT (20:34 UTC)
- Expired
- Aug 21, 2017, 4:00 PM CDT
- In force
- 26 min
- Issued by
- NWS Kansas City, MO
County Clay County, MO
The radar
The Pleasant Hill radar (KEAX), 59 km from the middle of the area, began a volume at 20:34 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 nearest sounding before it
Topeka, KS (KFOE), launched 12:00Z, 8.6 hours before the alert went out and 113 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
- 942 J/kg
- Mixed-layer CIN
- -160 J/kg
- Mixed-layer LCL
- 913 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 21, 12:40 PM CDT, 2 hours 54 minutes earlier.
Area forecast discussion, Aug 21, 12:40 PM CDT, 2 hours 54 minutes before
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</html>Hazardous weather outlook, Aug 21, 3:15 AM CDT, 12 hours 19 minutes before
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 315 AM CDT Mon Aug 21 2017 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-220815- 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- 315 AM CDT Mon Aug 21 2017 This hazardous weather outlook is for northwest...north central and west central Missouri...as well as extreme eastern Kansas. .DAY ONE...Today and Tonight Multiple rounds of thunderstorms are possible this afternoon and this evening, some which could become strong to severe. Strong winds, hail and perhaps even an isolated tornado are possible with the afternoon round especially along and north of Highway 36, and strong winds are possible with the late evening-overnight round throughout the outlook area. In addition to the severe threat, flooding will be a concern this evening and tonight throughout the outlook area. Several inches of rain are possible, and may fall very rapidly in stronger storms. More detailed information can be accessed at... https://www.weather.gov/eax/hwo .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. More detailed information can be accessed at... https://www.weather.gov/eax/hwo
In the hours before
Local storm report, Aug 21, 3:27 PM CDT, 7 minutes before
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</html>Local storm report, Aug 21, 3:31 PM CDT, 3 minutes before
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</html>Local storm report, Aug 21, 3:32 PM CDT, 2 minutes before
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</html>Local storm report, Aug 21, 3:33 PM CDT, 1 minute before
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</html>Local storm report, Aug 21, 3:34 PM CDT, 0 minutes before
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</html>Special weather statement, Aug 21, 3:34 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
334 PM CDT MON AUG 21 2017
MOZ029-037-212100-
Jackson MO-Clay MO-
334 PM CDT MON AUG 21 2017
...SIGNIFICANT WEATHER ADVISORY FOR CLAY AND NORTHWESTERN JACKSON
COUNTIES UNTIL 400 PM CDT...
At 334 PM CDT, Doppler radar was tracking a strong thunderstorm near
Pleasant Valley, or near Claycomo, moving northeast at 30 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Kansas City, Liberty, Gladstone, Excelsior Springs, Kearney, North
Kansas City, Sugar Creek, Lawson, Claycomo, Pleasant Valley,
Glenaire, Avondale, Oakview, Missouri City, River Bend, Mosby,
Oakwood Park, Oakwood, Birmingham and Oaks.
This includes the following highways...
Interstate 35 in Missouri between mile markers 6 and 30.
Interstate 29 between mile markers 0 and 2.
Interstate 435 between mile markers 40 and 55.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3946 9427 3945 9422 3921 9421 3913 9458
3928 9461 3931 9460
TIME...MOT...LOC 2034Z 239DEG 27KT 3926 9450
CDBThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 2:49 PM CDT | Areal Flood Advisory | EAX | Clay, Platte | 4 hr |
| Aug 21, 3:18 PM CDT | Areal Flood Advisory | EAX | Caldwell, Clay, Clinton, Ray | 3 hr |
| Aug 21, 3:45 PM CDT | Flash Flood Warning | EAX | Caldwell, Clay, Clinton, Platte, Ray | 4 hr |
| Aug 21, 4:10 PM CDT | Special Weather Statement | EAX | Clay | 35 min |
| Aug 21, 4:19 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Platte | 26 min |
| Aug 21, 4:43 PM CDT | Special Weather Statement | EAX | Chariton | 47 min |
| Aug 21, 4:48 PM CDT | River Flood Warning | EAX | Clay, Ray | 47 hr |
| Aug 21, 5:12 PM CDT | Special Weather Statement | EAX | Chariton, Randolph | 63 min |
| Aug 21, 5:46 PM CDT | Severe Thunderstorm Warning | EAX | Pettis, Saline | 44 min |
| Aug 21, 6:23 PM CDT | Severe Thunderstorm Warning | EAX | Cooper | 37 min |
Nearby
Special Weather Statements in Missouri, 2017Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.