Alert archive / Kansas / Areal Flood Advisories in 2021
Areal Flood Advisory 71, NWS Topeka, KS
NWS Topeka, KS issued this areal flood advisory at Sep 3, 2021, 4:34 AM CDT for Geary County, Riley County, Kansas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Sep 3, 2021, 4:34 AM CDT (09:34 UTC)
- Expired
- Sep 3, 2021, 7:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
Counties Geary County, KS, Riley County, KS
The radar
The Topeka radar (KTWX), 47 km from the middle of the area, began a volume at 09:34 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, 9.6 hours before the alert went out and 97 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
- 155 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.8
What forecasters said that day
The local office's own words before this areal flood advisory 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 areal flood advisory went out at Sep 3, 4:04 AM CDT, 30 minutes earlier.
Area forecast discussion, Sep 3, 4:04 AM CDT, 30 minutes before
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</html>Hazardous weather outlook, Sep 3, 4:09 AM CDT, 25 minutes before
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Special weather statement, Sep 3, 12:01 AM CDT, 4 hours 33 minutes before
Special Weather Statement
National Weather Service Topeka KS
1201 AM CDT Fri Sep 3 2021
KSZ054-055-030530-
Lyon-Osage-
1201 AM CDT Fri Sep 3 2021
...A strong thunderstorm will impact portions of west central Osage
and northeastern Lyon Counties through 1230 AM CDT...
At 1201 AM CDT, Doppler radar was tracking a strong thunderstorm near
Admire, moving northeast at 20 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Osage City and Admire.
This includes Kansas Turnpike between mile markers 139 and 154.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3860 9617 3874 9598 3874 9595 3860 9582
3852 9609
TIME...MOT...LOC 0501Z 239DEG 19KT 3859 9608
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
BaergSpecial weather statement, Sep 3, 12:31 AM CDT, 4 hours 3 minutes before
Special Weather Statement
National Weather Service Topeka KS
1231 AM CDT Fri Sep 3 2021
KSZ054-055-030600-
Lyon-Osage-
1231 AM CDT Fri Sep 3 2021
...A strong thunderstorm will impact portions of central Osage and
northeastern Lyon Counties through 100 AM CDT...
At 1231 AM CDT, Doppler radar was tracking a strong thunderstorm near
Osage City, moving northeast at 25 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Osage City, Carbondale, Burlingame, Scranton and Pomona Lake.
This includes Kansas Turnpike between mile markers 151 and 155.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3857 9592 3872 9602 3874 9597 3874 9595
3875 9595 3884 9570 3865 9555
TIME...MOT...LOC 0531Z 243DEG 21KT 3866 9588
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
LaflinSpecial weather statement, Sep 3, 12:57 AM CDT, 3 hours 37 minutes before
Special Weather Statement
National Weather Service Topeka KS
1257 AM CDT Fri Sep 3 2021
KSZ055-030630-
Osage-
1257 AM CDT Fri Sep 3 2021
...A strong thunderstorm will impact portions of northern Osage
County through 130 AM CDT...
At 1257 AM CDT, Doppler radar was tracking a strong thunderstorm over
Burlingame, moving northeast at 20 mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Carbondale, Overbrook, Burlingame and Scranton.
This includes Kansas Turnpike between mile markers 157 and 160.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3868 9587 3878 9595 3879 9594 3887 9577
3887 9561 3875 9555
TIME...MOT...LOC 0557Z 242DEG 19KT 3874 9585
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
LaflinSpecial weather statement, Sep 3, 1:29 AM CDT, 3 hours 5 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 |
|---|---|---|---|---|
| Sep 2, 7:18 PM CDT | Severe Thunderstorm Warning | TOP | Geary, Morris, Wabaunsee | 27 min |
| Sep 2, 7:44 PM CDT | Severe Thunderstorm Warning | TOP | Lyon, Morris, Wabaunsee | 31 min |
| Sep 2, 8:16 PM CDT | Special Weather Statement | TOP | Lyon | 29 min |
| Sep 2, 8:41 PM CDT | Special Weather Statement | TOP | Marshall | 34 min |
| Sep 2, 8:41 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 34 min |
| Sep 2, 9:11 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 34 min |
| Sep 2, 9:19 PM CDT | Special Weather Statement | TOP | Geary | 26 min |
| Sep 2, 9:43 PM CDT | Special Weather Statement | TOP | Morris | 32 min |
| Sep 3, 12:01 AM CDT | Special Weather Statement | TOP | Lyon | 29 min |
| Sep 3, 12:09 AM CDT | River Flood Warning | TOP | Marshall | 10 hr |
| Sep 3, 12:17 AM CDT | Areal Flood Advisory | TOP | Lyon, Osage | 7 hr |
| Sep 3, 12:31 AM CDT | Special Weather Statement | TOP | Osage | 29 min |
| Sep 3, 12:57 AM CDT | Special Weather Statement | TOP | Osage | 33 min |
| Sep 3, 1:29 AM CDT | Special Weather Statement | TOP | Shawnee | 46 min |
| Sep 3, 1:41 AM CDT | Areal Flood Advisory | TOP | Lyon, Osage, Shawnee, Wabaunsee | 6 hr |
| Sep 3, 3:34 AM CDT | Flash Flood Watch | TOP | Anderson, Coffey, Dickinson, Douglas, Franklin, Geary and 5 more | 33 hr |
| Sep 3, 5:21 AM CDT | Flash Flood Warning | TOP | Douglas | 3 hr |
Nearby
Areal Flood Advisories in Kansas, 2021Every areal flood advisory in 2021
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.