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 4, 2009, 8:02 AM CDT for Pettis County, Missouri. It was in force for 43 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 4, 2009, 8:02 AM CDT (13:02 UTC)
- Expired
- Aug 4, 2009, 8:45 AM CDT
- In force
- 43 min
- Issued by
- NWS Kansas City, MO
County Pettis County, MO
The radar
The Pleasant Hill radar (KEAX), 88 km from the middle of the area, began a volume at 13:02 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
Springfield, MO (KSGF), launched 12:00Z, 1.0 hours before the alert went out and 196 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
- 890 J/kg
- Mixed-layer CIN
- -261 J/kg
- Mixed-layer LCL
- 1930 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 4, 6:48 AM CDT, 1 hour 14 minutes earlier.
Area forecast discussion, Aug 4, 6:48 AM CDT, 1 hour 14 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 559 AM CDT TUE AUG 4 2009 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-051100- 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- 559 AM CDT TUE AUG 4 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS THIS MORNING WILL BE AFFECTING THE NORTHERN HALF OF MISSOURI....MAINLY NORTH OF INTERSTATE 70. THESE STORMS WILL HAVE THE POTENTIAL OF PRODUCING STRONG WINDS...SOME WHICH MAY PRODUCE GUSTS TO NEAR 60 MPH. SOME HAIL MAY BE IN THE PENNY TO NICKEL RANGE...WITH ONE INCH HAIL NOT OUT OF THE QUESTION. ABUNDANT LIGHTNING WILL ALSO BE OCCURRING WITH THE STORMS WHICH COULD CAUSE POWER OUTAGES. HEAVY RAINFALL...ESPECIALLY IN AREAS THAT SEE REPEATED ROUNDS OF THUNDERSTORMS...MAY CAUSE SOME FLOODING ISSUES. THE STORMS SHOULD BE EXITING THE REGION BY LATE MORNING...THEN THERE WILL JUST BE A SLIGHT CHANCE OF MORE STORMS DEVELOPING THIS AFTERNOON AND EVENING. IF THEY DO OCCUR...THEY WOULD HAVE THE POTENTIAL OF PRODUCING SEVERE WEATHER...AGAIN WITH DAMAGING WINDS AND HAIL. OVERNIGHT...A FRONTAL BOUNDARY SHOULD STALL JUST SOUTH OF THE OUTLOOK AREA...ACROSS THE NORTHERN PORTIONS OF THE OZARKS. THERE WILL BE A CHANCE OF STORMS IN THE VICINITY OF THIS FRONT. WIND AND HAIL MAY OCCUR WITH THESE LATE NIGHT STORMS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ON WEDNESDAY...MORE THUNDERSTORMS WILL BE POSSIBLE AS A STORM COMPLEX MOVES SOUTHEAST OUT OF NEBRASKA. THESE STORMS WOULD HAVE TO THE POTENTIAL OF PRODUCING DAMAGING WINDS AND HAIL. THE ADDITIONAL RAIN POSSIBLY OCCURRING IN AREAS THAT RECEIVED HEAVIER RAINFALL ON TUESDAY...MAY CAUSE FLOODING PROBLEMS. WEDNESDAY NIGHT...STORMS MAY STILL BE ONGOING IN THE EVENING...THEN EXIT THE AREA OVERNIGHT. ON THURSDAY AS THE FRONT LIFTS NORTH AS A WARM FRONT...MORE THUNDERSTORMS MAY OCCUR...MAINLY IN NORTHERN MISSOURI. THIS WARM FRONT WILL BE THE LEADING EDGE OF MUCH WARMER AIR SURGING BACK INTO THE AREA FOR FRIDAY AND THE WEEKEND...WITH TEMPERATURES WELL INTO THE 90S. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS MORNING ACROSS NORTHERN MISSOURI...AND MAY ALSO BE NEEDED THIS AFTERNOON AND EVENING IF MORE THUNDERSTORMS CAN REDEVELOP. OVERNIGHT...SPOTTER ACTIVATION MAY BE NEEDED IN AREAS SOUTH OF INTERSTATE 70. ON WEDNESDAY...SPOTTER ACTIVATION MAY AGAIN BE NEEDED. ALSO REPORTS OF FLOODING ARE REQUESTED. PC
In the hours before
Special weather statement, Aug 4, 6:44 AM CDT, 1 hour 18 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 4, 1:22 AM CDT | Special Weather Statement | EAX | Nodaway | 23 min |
| Aug 4, 1:44 AM CDT | Special Weather Statement | EAX | Nodaway | 31 min |
| Aug 4, 1:52 AM CDT | Severe Thunderstorm Warning | EAX | Atchison, Nodaway | 23 min |
| Aug 4, 2:10 AM CDT | Areal Flood Advisory | EAX | Atchison, Nodaway, Worth | 4 hr |
| Aug 4, 2:15 AM CDT | Special Weather Statement | EAX | Nodaway | 30 min |
| Aug 4, 2:46 AM CDT | Special Weather Statement | EAX | Gentry, Nodaway, Worth | 29 min |
| Aug 4, 3:03 AM CDT | Severe Thunderstorm Warning | EAX | Gentry, Nodaway, Worth | 27 min |
| Aug 4, 3:16 AM CDT | Special Weather Statement | EAX | Andrew, Holt | 29 min |
| Aug 4, 3:17 AM CDT | Special Weather Statement | EAX | Atchison | 28 min |
| Aug 4, 3:21 AM CDT | Severe Thunderstorm Warning | EAX | Andrew, Daviess, DeKalb, Gentry, Harrison | 24 min |
| Aug 4, 3:55 AM CDT | Special Weather Statement | EAX | Caldwell, Daviess, DeKalb, Grundy, Mercer | 35 min |
| Aug 4, 4:10 AM CDT | Flash Flood Warning | EAX | Atchison, Nodaway | 5 hr |
| Aug 4, 4:25 AM CDT | Severe Thunderstorm Warning | EAX | Chariton, Daviess, Grundy, Linn, Livingston, Mercer and 1 more | 33 min |
| Aug 4, 4:37 AM CDT | Special Weather Statement | EAX | Mercer | 38 min |
| Aug 4, 4:55 AM CDT | Areal Flood Advisory | EAX | Andrew, Daviess, DeKalb, Gentry, Holt, Nodaway | 4 hr |
| Aug 4, 5:02 AM CDT | Special Weather Statement | EAX | Chariton, Howard, Macon, Randolph, Saline | 43 min |
| Aug 4, 5:10 AM CDT | Special Weather Statement | EAX | Atchison | 35 min |
| Aug 4, 5:28 AM CDT | Severe Thunderstorm Warning | EAX | Atchison, Holt, Nodaway | 47 min |
| Aug 4, 5:33 AM CDT | Special Weather Statement | EAX | Putnam, Schuyler | 42 min |
| Aug 4, 5:58 AM CDT | Severe Thunderstorm Warning | EAX | Andrew, Holt | 47 min |
| Aug 4, 6:25 AM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Platte | 35 min |
| Aug 4, 6:44 AM CDT | Special Weather Statement | EAX | Platte | 31 min |
| Aug 4, 6:51 AM CDT | Special Weather Statement | EAX | Jackson | 24 min |
| Aug 4, 7:10 AM CDT | Special Weather Statement | EAX | Cass | 50 min |
| Aug 4, 7:22 AM CDT | Special Weather Statement | EAX | Johnson | 38 min |
| Aug 4, 7:30 AM CDT | Special Weather Statement | EAX | Bates, Henry | 30 min |
| Aug 4, 7:40 AM CDT | Severe Thunderstorm Warning | EAX | Bates, Cass, Henry, Johnson | 50 min |
| Aug 4, 6:14 AM CDT | Severe Thunderstorm Warning | EAX | Atchison, Doniphan | 31 min |
| Aug 4, 6:34 AM CDT | Special Weather Statement | EAX | Leavenworth | 26 min |
Nearby
Special Weather Statements in Missouri, 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.