Alert archive / Missouri / Special Weather Statements in 2012

Special Weather Statement, NWS Kansas City, MO

April 15, 2012Daviess County, Missouri

NWS Kansas City, MO issued this special weather statement at Apr 15, 2012, 6:52 AM CDT for Daviess County, Missouri. It was in force for 23 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: Apr 15, 2012, 6:52 AM CDT (11:52 UTC)
Expired: Apr 15, 2012, 7:15 AM CDT
In force: 23 min
Issued by: NWS Kansas City, MO

County Daviess County, MO

The radar

The Pleasant Hill radar (KEAX), 144 km from the middle of the area, began a volume at 11:54 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 (KTOP), launched 00:00Z, 11.9 hours before the alert went out and 188 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: 1788 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 665 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 401 m²/s²
0-3 km storm-relative helicity: 443 m²/s²
Significant tornado parameter: 5.2
Supercell composite: 17.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Apr 15, 6:37 AM CDT, 15 minutes earlier.

Area forecast discussion, Apr 15, 6:37 AM CDT, 15 minutes before

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Hazardous weather outlook, Apr 15, 5:15 AM CDT, 1 hour 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
515 AM CDT SUN APR 15 2012

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-161015-
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-
515 AM CDT SUN APR 15 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND
WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS.

.DAY ONE...TODAY AND TONIGHT

THE LINE OF THUNDERSTORMS STRETCHING FROM CENTRAL OKLAHOMA TO EXTREME
NORTHWEST MISSOURI THIS MORNING WILL CONTINUE TO TRACK EASTWARD
THROUGH THE OUTLOOK AREA TODAY AHEAD OF AN ADVANCING COLD FRONT. AS
THIS LINE MOVES INTO EASTERN KANSAS AND WESTERN MISSOURI...THE MAIN
THREATS WILL BE STRONG GUSTY WINDS AND POSSIBLY LARGE HAIL. THIS
LINE WILL LIKELY WEAKEN THIS MORNING AS IT MOVES THROUGH WESTERN
MISSOURI...HOWEVER IS EXPECTED TO INCREASE IN INTENSITY BY THIS
AFTERNOON AS THE LINE PUSHES INTO CENTRAL AND NORTHEASTERN MISSOURI.
STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE WITH THIS AFTERNOON
REDEVELOPMENT...WITH THE MAIN THREATS BEING DAMAGING WINDS...LARGE
HAIL AND POSSIBLY ISOLATED TORNADOES. THIS THREAT WILL DIMINISH BY
THIS EVENING AS THE COLD FRONT PASSES EAST OF THE OUTLOOK AREA.

ADDITIONALLY...VERY STRONG AND GUSTY SOUTHERLY WINDS WILL SPREAD
ACROSS THE ENTIRE OUTLOOK AREA TODAY AS THE LOW LEVEL JET INCREASES
OVER THE REGION. SUSTAINED WIND SPEEDS OF 25 TO 30 MPH ARE EXPECTED WITH
GUSTS UPWARDS OF 40 TO 45 MPH FROM MID-MORNING THROUGH EARLY THIS
EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON IN AREAS ALONG AND
EAST OF INTERSTATE 35.

ACH

In the hours before

Special weather statement, Apr 15, 4:00 AM CDT, 2 hours 52 minutes before

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Special weather statement, Apr 15, 5:33 AM CDT, 1 hour 19 minutes before

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Special weather statement, Apr 15, 5:35 AM CDT, 1 hour 17 minutes before

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Special weather statement, Apr 15, 5:47 AM CDT, 1 hour 5 minutes before

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Special weather statement, Apr 15, 6:16 AM CDT, 36 minutes before

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Special weather statement, Apr 15, 6:52 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
Apr 15, 2:49 AM CDT	Special Weather Statement	EAX	Holt, Nodaway	41 min
Apr 15, 2:55 AM CDT	River Flood Warning	EAX	Atchison, Holt	16 hr
Apr 15, 2:59 AM CDT	River Flood Warning	EAX	Andrew, Nodaway	16 hr
Apr 15, 3:32 AM CDT	Special Weather Statement	EAX	Andrew, Gentry, Nodaway, Worth	43 min
Apr 15, 4:00 AM CDT	Special Weather Statement	EAX	Buchanan, Clinton, DeKalb, Platte	45 min
Apr 15, 4:17 AM CDT	Wind Advisory	EAX	Adair, Andrew, Atchison, Bates, Buchanan, Caldwell and 31 more	16 hr
Apr 15, 5:33 AM CDT	Special Weather Statement	EAX	Daviess, Grundy, Harrison, Mercer	42 min
Apr 15, 5:35 AM CDT	Special Weather Statement	EAX	Bates	40 min
Apr 15, 5:47 AM CDT	Special Weather Statement	EAX	Buchanan, Clinton, DeKalb	28 min
Apr 15, 6:16 AM CDT	Special Weather Statement	EAX	Daviess, DeKalb, Harrison	29 min
Apr 15, 7:20 AM CDT	River Flood Warning	EAX	Andrew, Buchanan	38 hr
Apr 15, 7:20 AM CDT	River Flood Warning	EAX	Andrew, Holt, Nodaway	12 hr
Apr 15, 1:04 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Pettis	41 min
Apr 15, 1:13 PM CDT	Special Weather Statement	EAX	Cooper, Howard	32 min
Apr 15, 2:11 PM CDT	Special Weather Statement	EAX	Macon	34 min
Apr 15, 3:26 PM CDT	River Flood Warning	EAX	Andrew, Buchanan	30 hr
Apr 15, 3:26 PM CDT	River Flood Warning	EAX	Buchanan	51 hr
Apr 15, 4:37 PM CDT	Special Weather Statement	EAX	Cooper	8 min

Nearby

Special Weather Statements in Missouri, 2012 Every special weather statement in 2012

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.