Alert archive / Kansas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 186, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Jul 20, 2009, 8:43 PM CDT for Dickinson County, Kansas. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 20, 2009, 8:43 PM CDT (01:43 UTC)
- Expired
- Jul 20, 2009, 9:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
County Dickinson County, KS
The radar
The Topeka radar (KTWX), 81 km from the middle of the area, began a volume at 01:43 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 20, 5:53 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 1.7 hours before the alert went out and 132 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
- 27 J/kg
- Mixed-layer CIN
- -259 J/kg
- Mixed-layer LCL
- 1133 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 214 m²/s²
- 0-3 km storm-relative helicity
- 660 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Topeka, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 6:28 PM CDT, 2 hours 15 minutes earlier.
Area forecast discussion, Jul 20, 6:28 PM CDT, 2 hours 15 minutes before
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</html>Hazardous weather outlook, Jul 20, 6:09 PM CDT, 2 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TOPEKA KS 609 PM CDT MON JUL 20 2009 KSZ020-034-035-037-212315- CLOUD-OTTAWA-DICKINSON-MORRIS- 609 PM CDT MON JUL 20 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL AND NORTH CENTRAL KANSAS. .DAY ONE...THIS EVENING AND TONIGHT PERIODS OF THUNDERSTORMS ARE EXPECTED ACROSS THE OUTLOOK AREA TONIGHT. SOME OF THE STORMS MAY BE SEVERE WITH LARGE HAIL...DAMAGING WINDS AND TORNADOES...MAINLY ACROSS CENTRAL KANSAS LATER THIS EVENING. IN ADDITION...LOCALLY HEAVY RAINFALL IS EXPECTED ACROSS MUCH OF NORTHEAST AND EAST CENTRAL KANSAS TONIGHT WHICH COULD LEAD TO FLASH FLOODING. A FLASH FLOOD WATCH IS POSTED TONIGHT FOR MUCH OF NORTHEAST AND EAST CENTRAL KANSAS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE POSSIBLE TUESDAY MORNING ACROSS PARTS OF NORTHEAST AND EAST CENTRAL KANSAS. THE CHANCE FOR THUNDERSTORMS RETURNS TO THE AREA FRIDAY INTO SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED. KSZ008>012-021>024-026-036-038>040-054>056-058-059-212315- REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLAY-RILEY-POTTAWATOMIE- JACKSON-JEFFERSON-GEARY-WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE- FRANKLIN-COFFEY-ANDERSON- 609 PM CDT MON JUL 20 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL...NORTH CENTRAL AND NORTHEAST KANSAS. .DAY ONE...THIS EVENING AND TONIGHT PERIODS OF THUNDERSTORMS ARE EXPECTED ACROSS THE OUTLOOK AREA TONIGHT. SOME OF THE STORMS MAY BE SEVERE WITH LARGE HAIL AND DAMAGING WINDS THE MAIN HAZARDS...MAINLY ACROSS NORTH CENTRAL KANSAS LATER THIS EVENING. IN ADDITION...LOCALLY HEAVY RAINFALL IS EXPECTED ACROSS MUCH OF NORTHEAST AND EAST CENTRAL KANSAS TONIGHT WHICH COULD LEAD TO FLASH FLOODING. A FLASH FLOOD WATCH IS POSTED TONIGHT FOR MUCH OF NORTHEAST AND EAST CENTRAL KANSAS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE POSSIBLE TUESDAY MORNING ACROSS PARTS OF NORTHEAST AND EAST CENTRAL KANSAS. THE CHANCE FOR THUNDERSTORMS RETURNS TO THE AREA FRIDAY INTO SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS MAY BE NEEDED THIS EVENING AND TONIGHT...MAINLY ACROSS NORTH CENTRAL KANSAS.
In the hours before
Local storm report, Jul 20, 6:39 PM CDT, 2 hours 4 minutes before
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</html>The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 7:43 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 47 min |
| Jul 20, 8:21 PM CDT | Severe Thunderstorm Warning | TOP | Dickinson | 24 min |
| Jul 20, 9:35 PM CDT | Severe Thunderstorm Warning | TOP | Dickinson | 40 min |
| Jul 20, 9:36 PM CDT | Areal Flood Advisory | TOP | Dickinson, Geary, Morris | 4 hr |
| Jul 21, 9:15 AM CDT | River Flood Warning | TOP | Lyon | 28 hr |
Nearby
Severe Thunderstorm Warnings in Kansas, 2009Every severe thunderstorm warning 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.