Alert archive / Missouri / Special Weather Statements in 2009
Special Weather Statement, NWS Kansas City, MO
NWS Kansas City, MO issued this special weather statement at Aug 9, 2009, 6:53 PM CDT for Holt County, Missouri; Doniphan County, Kansas. It was in force for 37 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 9, 2009, 6:53 PM CDT (23:53 UTC)
- Expired
- Aug 9, 2009, 7:30 PM CDT
- In force
- 37 min
- Issued by
- NWS Kansas City, MO
Counties Doniphan County, KS, Holt County, MO
The radar
The Topeka radar (KTWX), 144 km from the middle of the area, began a volume at 23:57 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 12:00Z, 11.9 hours before the alert went out and 169 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
- 1138 J/kg
- Mixed-layer CIN
- -213 J/kg
- Mixed-layer LCL
- 726 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.9
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 Aug 9, 6:51 PM CDT, 2 minutes earlier.
Area forecast discussion, Aug 9, 6:51 PM CDT, 2 minutes before
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</html>Hazardous weather outlook, Aug 9, 1:06 PM CDT, 5 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 106 PM CDT SUN AUG 9 2009 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-101815- 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- 106 PM CDT SUN AUG 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A CHANCE FOR THUNDERSTORMS LATE SUNDAY AFTERNOON ACROSS FAR NORTHWEST AND NORTH CENTRAL MISSOURI...THEN ACROSS MUCH OF THE REGION NORTH OF THE MISSOURI TONIGHT. SCATTERED THUNDERSTORMS FORMING ALONG AND BEHIND A COLD FRONT FROM SOUTHWEST IOWA THROUGH SOUTHWEST KANSAS WILL SHIFT SLOWLY EAST AND INCREASE IN COVERAGE THIS AFTERNOON. ALTHOUGH THE AIRMASS AHEAD OF THE FRONT IS MODERATELY UNSTABLE THERE IS A VERY WARM LAYER ALOFT WHICH WILL INITIALLY PREVENT THUNDERSTORM DEVELOPMENT. SCATTERED THUNDERSTORMS ARE EXPECTED TO ENTER FAR NORTHWEST MISSOURI BY LATE AFTERNOON AND CONTINUE EAST ACROSS FAR NORTHERN MISSOURI. A SECOND ROUND OF THUNDERSTORMS WILL FORM BY LATE EVENING AND THESE WILL TRACK SOUTHEAST TO THE MISSOURI RIVER BY SUNRISE MONDAY. A FEW STORMS MAY BECOME SEVERE DURING THE LATE AFTERNOON AND EVENING HOURS IN NORTHWEST MISSOURI...GENERALLY NORTH OF AN OREGON TO BETHANY LINE. THE COMBINATION OF MODERATE SHEAR AND INSTABILITY WILL BE SUFFICIENT TO SUPPORT A FEW ROTATING THUNDERSTORMS WHICH COULD PRODUCE LARGE HAIL AND DAMAGING WINDS. IN ADDITION...ANOTHER HOT AND HUMID AFTERNOON IS EXPECTED ACROSS THE REGION WITH HEAT INDEX VALUES OF 99 TO 103 EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY AS THE COLD FRONT SAGS SOUTHEAST DURING THE DAY MONDAY IT MAY TRIGGER ADDITIONAL THUNDERSTORMS THROUGHOUT THE REGION WITH THESE STORMS SHIFTING GENERALLY SOUTH OF THE MISSOURI RIVER BY MONDAY NIGHT INTO TUESDAY MORNING. THERE CONTINUES CONSIDERABLE UNCERTAINTY REGARDING WHETHER ANY STORMS WILL BE SEVERE MONDAY AFTERNOON. HOWEVER...AT THIS TIME A FEW SEVERE STORMS CAN NOT BE RULED OUT. LARGE HAIL AND HIGH WINDS WOULD BE THE MAIN HAZARDS WITH THE STRONGEST STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE SUNDAY AFTERNOON AND EVENING ACROSS NORTHWEST MISSOURI. MJ
In the hours before
Local storm report, Aug 9, 5:42 PM CDT, 1 hour 11 minutes before
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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
607 PM CDT SUN AUG 9 2009
MOZ002-092330-
NODAWAY-
607 PM CDT SUN AUG 9 2009
...SIGNIFICANT WEATHER ALERT FOR NORTHWESTERN NODAWAY COUNTY UNTIL
630 PM CDT...
AT 606 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM HOPKINS TO 6 MILES
NORTHWEST OF RAVENWOOD...MOVING EAST AT 26 MPH.
WINDS AROUND 50 MPH ARE EXPECTED WITH THESE STORMS.
THESE STORMS WILL AFFECT MAINLY RURAL AREAS OF NORTHWESTERN NODAWAY
COUNTY...INCLUDING THE TOWN OF PICKERING.
LAT...LON 4058 9485 4043 9479 4027 9490 4027 9509
4046 9513 4058 9522
PCLocal storm report, Aug 9, 6:08 PM CDT, 45 minutes before
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</html>Local storm report, Aug 9, 6:09 PM CDT, 44 minutes before
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</html>Special weather statement, Aug 9, 6:53 PM 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 |
|---|---|---|---|---|
| Aug 9, 4:55 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 50 min |
| Aug 9, 5:25 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Nodaway | 50 min |
| Aug 9, 6:07 PM CDT | Special Weather Statement | EAX | Nodaway | 23 min |
Nearby
Special Weather Statements in Missouri, 2009Special Weather Statements in Kansas, 2009Every special weather statement in 2009
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.