Alert archive / Missouri / Special Weather Statements in 2011
Special Weather Statement, NWS Kansas City, MO
NWS Kansas City, MO issued this special weather statement at May 31, 2011, 12:58 AM CDT for Atchison County, Missouri. It was in force for 32 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 31, 2011, 12:58 AM CDT (05:58 UTC)
- Expired
- May 31, 2011, 1:30 AM CDT
- In force
- 32 min
- Issued by
- NWS Kansas City, MO
County Atchison County, MO
The radar
The Omaha radar (KOAX), 107 km from the middle of the area, began a volume at 05:57 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
Omaha, NE (KOAX), launched 00:00Z, 6.0 hours before the alert went out and 108 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
- 2253 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 998 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 331 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
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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 May 31, 12:55 AM CDT, 3 minutes earlier.
Area forecast discussion, May 31, 12:55 AM CDT, 3 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 642 PM CDT MON MAY 30 2011 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-311200- 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- 642 PM CDT MON MAY 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS. .DAY ONE...TONIGHT SOUTH WINDS WILL CONTINUE GUSTING TO BETWEEN 25 AND 35 MPH EARLY THIS EVENING BEFORE GRADUALLY DECREASING AFTER SUNSET. A FEW LOCATIONS COULD SEE GUSTS IN EXCESS OF 40 MPH THROUGH THIS TIME...ESPECIALLY ACROSS FAR WESTERN MISSOURI AND EASTERN KANSAS. A COLD FRONT WILL MOVE INTO THE REGION AFTER 2 AM BRINGING A CHANCE OF THUNDERSTORMS. STRONG TO SEVERE THUNDERSTORMS WILL DEVELOP ALONG THE FRONT IN NEBRASKA AND PERHAPS INTO CENTRAL KANSAS THIS EVENING AND EARLY TONIGHT...BUT WILL BEGIN TO DECREASE IN INTENSITY AS THEY APPROACH WEST CENTRAL AND NORTHWEST MISSOURI LATER TONIGHT. REGARDLESS...A FEW STORMS MAY BE MARGINALLY SEVERE AS THEY ENTER MISSOURI. THE PRIMARY THREATS ARE DAMAGING WINDS. THE HIGHEST THREAT AREA IS WEST OF A LINE FROM ATCHISON KANSAS TO GRANT CITY MISSOURI. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE FRONT WILL SHIFT INTO CENTRAL MISSOURI TUESDAY AFTERNOON. ISOLATED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE ALONG THE FRONT TUESDAY AFTERNOON IN AREAS MAINLY SOUTH OF A LINE FROM BOONVILLE TO SEDALIA. THE PRIMARY THREATS ARE LARGE HAIL AND DAMAGING WINDS. A FEW THUNDERSTORMS ARE POSSIBLE ON WEDNESDAY. ALTHOUGH THE SHEAR WILL BE QUITE WEAK...THERE WILL BE SUFFICIENT INSTABILITY TO PRODUCE ISOLATED STRONG TO SEVERE THUNDERSTORMS. ISOLATED THUNDERSTORMS ARE POSSIBLE THIS WEEKEND. THE STORMS ARE NOT EXPECTED TO BE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE TONIGHT ACROSS NORTHEAST KANSAS AND NORTHWEST MISSOURI. HAWBLITZEL
In the hours before
Special weather statement, May 31, 12:58 AM CDT, 0 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 |
|---|---|---|---|---|
| May 30, 8:10 PM CDT | River Flood Warning | EAX | Buchanan | 13 hr |
| May 31, 1:29 AM CDT | Special Weather Statement | EAX | Atchison, Holt | 31 min |
| May 31, 2:12 AM CDT | Special Weather Statement | EAX | Andrew, Holt, Nodaway | 33 min |
| May 31, 2:38 AM CDT | Special Weather Statement | EAX | Gentry, Nodaway, Worth | 22 min |
| May 31, 2:50 AM CDT | Special Weather Statement | EAX | Andrew, Buchanan, Platte | 25 min |
| May 31, 3:15 AM CDT | Special Weather Statement | EAX | Andrew, Buchanan, Clinton, DeKalb, Gentry | 30 min |
| May 31, 3:41 AM CDT | Special Weather Statement | EAX | Caldwell, Clinton, Daviess, DeKalb, Grundy, Harrison and 2 more | 49 min |
| May 31, 4:35 AM CDT | Special Weather Statement | EAX | Adair, Chariton, Linn, Livingston, Macon, Sullivan | 40 min |
| May 31, 6:08 AM CDT | Special Weather Statement | EAX | Howard, Randolph, Saline | 52 min |
| May 31, 4:16 AM CDT | Special Weather Statement | EAX | Linn, Miami | 44 min |
Nearby
Special Weather Statements in Missouri, 2011Every special weather statement in 2011
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.