Alert archive / Missouri / Special Weather Statements in 2018

Special Weather Statement, NWS Kansas City, MO

August 29, 2018Macon County, Randolph County, Missouri

NWS Kansas City, MO issued this special weather statement at Aug 29, 2018, 12:49 AM CDT for Macon County, Randolph 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 29, 2018, 12:49 AM CDT (05:49 UTC)
Expired: Aug 29, 2018, 1:15 AM CDT
In force: 26 min
Issued by: NWS Kansas City, MO

Counties Macon County, MO, Randolph County, MO

The radar

The St Louis radar (KLSX), 180 km from the middle of the area, began a volume at 05:50 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

Davenport, (KDVN), launched 00:00Z, 5.8 hours before the alert went out and 279 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1340 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 279 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

As transmitted.

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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 28, 11:48 PM CDT, 1 hour 1 minute earlier.

Area forecast discussion, Aug 28, 11:48 PM CDT, 1 hour 1 minute before

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Hazardous weather outlook, Aug 28, 5:02 AM CDT, 19 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
502 AM CDT Tue Aug 28 2018

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-291015-
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-
502 AM CDT Tue Aug 28 2018

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Today and Tonight

 Heat indices between 97-102 degrees are expected this afternoon.

 Severe storms are possible across the area late this afternoon into
 this evening. Large hail and damaging winds will be the main
 threats however, an isolated tornado cannot be completely ruled out.

 These storms will be capable of producing heavy rainfall which may
 lead to localized flash flooding.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

 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 28, 8:33 PM CDT, 4 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
833 PM CDT TUE AUG 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0735 PM     TSTM WND DMG     5 W GALT                40.13N 93.45W
08/28/2018                   GRUNDY             MO   EMERGENCY MNGR

            LARGE TREES DOWN AND SHED DOORS BLOWN IN.

&&

Local storm report, Aug 28, 8:56 PM CDT, 3 hours 53 minutes before

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Special weather statement, Aug 28, 8:57 PM CDT, 3 hours 52 minutes before

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Local storm report, Aug 28, 9:37 PM CDT, 3 hours 12 minutes before

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Local storm report, Aug 28, 11:48 PM CDT, 1 hour 1 minute before

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Special weather statement, Aug 29, 12:49 AM CDT, 0 minutes before

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The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 28, 7:02 PM CDT	Severe Thunderstorm Warning	EAX	Harrison, Mercer	28 min
Aug 28, 7:08 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Sullivan	32 min
Aug 28, 7:19 PM CDT	Special Weather Statement	EAX	Schuyler	41 min
Aug 28, 7:21 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Linn, Macon, Randolph, Saline	39 min
Aug 28, 7:27 PM CDT	Special Weather Statement	EAX	Mercer, Putnam	48 min
Aug 28, 7:35 PM CDT	Special Weather Statement	EAX	Schuyler	40 min
Aug 28, 7:46 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Schuyler	29 min
Aug 28, 7:49 PM CDT	Special Weather Statement	EAX	Macon	26 min
Aug 28, 8:19 PM CDT	Special Weather Statement	EAX	Mercer	41 min
Aug 28, 8:24 PM CDT	Special Weather Statement	EAX	Buchanan	51 min
Aug 28, 8:37 PM CDT	Severe Thunderstorm Warning	EAX	Mercer	23 min
Aug 28, 8:57 PM CDT	Special Weather Statement	EAX	Mercer	48 min
Aug 29, 1:03 AM CDT	Special Weather Statement	EAX	Linn	27 min
Aug 29, 8:29 AM CDT	Special Weather Statement	EAX	Bates	31 min

Nearby

Special Weather Statements in Missouri, 2018 Every special weather statement in 2018

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.