Alert archive / Kansas / Special Weather Statements in 2012

Special Weather Statement, NWS Kansas City, MO

May 24, 2012Johnson County, Kansas

NWS Kansas City, MO issued this special weather statement at May 24, 2012, 7:48 PM CDT for Johnson County, Kansas. It was in force for 42 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: May 24, 2012, 7:48 PM CDT (00:48 UTC)
Expired: May 24, 2012, 8:30 PM CDT
In force: 42 min
Issued by: NWS Kansas City, MO

County Johnson County, KS

The radar

The Pleasant Hill radar (KEAX), 52 km from the middle of the area, began a volume at 00:47 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, 0.8 hours before the alert went out and 71 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: 97 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 2067 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 May 24, 6:17 PM CDT, 1 hour 31 minutes earlier.

Area forecast discussion, May 24, 6:17 PM CDT, 1 hour 31 minutes before

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Hazardous weather outlook, May 24, 6:25 PM CDT, 1 hour 23 minutes before

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In the hours before

Special weather statement, May 24, 6:04 PM CDT, 1 hour 44 minutes before

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Local storm report, May 24, 6:07 PM CDT, 1 hour 41 minutes before

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Special weather statement, May 24, 6:53 PM CDT, 55 minutes before

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Local storm report, May 24, 7:14 PM CDT, 34 minutes before

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Special weather statement, May 24, 7:19 PM CDT, 29 minutes before

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Special weather statement, May 24, 7:48 PM 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
May 24, 7:00 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Platte	30 min
May 24, 7:14 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Platte	8 min
May 24, 8:18 PM CDT	Special Weather Statement	EAX	Jackson	27 min
May 25, 6:15 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	30 min
May 25, 7:32 AM CDT	Special Weather Statement	EAX	Bates	28 min
May 25, 7:41 AM CDT	Severe Thunderstorm Warning	EAX	Bates	19 min
May 25, 8:23 AM CDT	Areal Flood Advisory	EAX	Cass, Jackson	6 hr
May 25, 8:46 AM CDT	Special Weather Statement	EAX	Jackson	29 min
May 25, 9:12 AM CDT	Flash Flood Warning	EAX	Cass, Jackson	6 hr
May 25, 9:35 AM CDT	Special Weather Statement	EAX	Johnson	25 min
May 25, 10:18 AM CDT	Flash Flood Warning	EAX	Johnson, Lafayette	6 hr
May 25, 10:32 AM CDT	Special Weather Statement	EAX	Pettis	43 min
May 25, 11:02 AM CDT	Severe Thunderstorm Warning	EAX	Pettis	28 min
May 25, 11:09 AM CDT	Areal Flood Warning	EAX	Cass	12 hr
May 25, 11:12 AM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	9 hr
May 25, 11:47 AM CDT	Special Weather Statement	EAX	Cooper	28 min
May 25, 2:55 PM CDT	Areal Flood Warning	EAX	Cass, Jackson	8 hr
May 25, 3:03 PM CDT	Special Weather Statement	EAX	Worth	42 min
May 25, 3:11 PM CDT	Severe Thunderstorm Warning	EAX	Worth	19 min
May 25, 3:33 PM CDT	Severe Thunderstorm Warning	EAX	Nodaway, Worth	42 min
May 25, 4:02 PM CDT	Severe Thunderstorm Warning	EAX	Harrison, Mercer, Worth	28 min
May 25, 4:28 PM CDT	Special Weather Statement	EAX	Mercer	47 min
May 25, 4:48 PM CDT	Special Weather Statement	EAX	Putnam	42 min
May 25, 5:13 PM CDT	Special Weather Statement	EAX	Putnam	47 min
May 25, 5:34 PM CDT	Severe Thunderstorm Warning	EAX	Putnam, Schuyler	25 min
May 24, 7:19 PM CDT	Special Weather Statement	EAX	Leavenworth	26 min
May 25, 5:58 AM CDT	Special Weather Statement	EAX	Johnson	47 min

Nearby

Special Weather Statements in Kansas, 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.