Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 128, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Aug 31, 2021, 8:17 AM CDT for Atchison County, Doniphan County, Kansas. 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 31, 2021, 8:17 AM CDT (13:17 UTC)
- Expired
- Aug 31, 2021, 9:00 AM CDT
- In force
- 43 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Atchison County, KS, Doniphan County, KS
The radar
The Topeka radar (KTWX), 111 km from the middle of the area, began a volume at 13:20 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 12:00Z, 1.3 hours before the alert went out and 80 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
- 986 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 1015 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
773
WUUS53 KEAX 311317
SVREAX
KSC005-043-311400-
/O.NEW.KEAX.SV.W.0128.210831T1317Z-210831T1400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
817 AM CDT Tue Aug 31 2021
The National Weather Service in Pleasant Hill has issued a
* Severe Thunderstorm Warning for...
Western Doniphan County in northeastern Kansas...
Atchison County in northeastern Kansas...
* Until 900 AM CDT.
* At 816 AM CDT, severe thunderstorms were located along a line
extending from near White Cloud to Goff, moving southeast at 40
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Atchison, Highland, Effingham, Lancaster, White Cloud, Muscotah,
Denton, Severance, Farmington, Huron, Leona, Arrington, Bendena,
Cummings and Iowa Point.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3965 9557 3965 9534 3997 9534 3999 9530
3995 9524 3994 9521 3958 9508 3958 9511
3954 9511 3950 9505 3946 9504 3942 9529
3942 9557
TIME...MOT...LOC 1316Z 333DEG 34KT 3993 9526 3969 9592
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Blair3 follow-up statements
479
WWUS53 KEAX 311330
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
830 AM CDT Tue Aug 31 2021
KSC005-043-311400-
/O.CON.KEAX.SV.W.0128.000000T0000Z-210831T1400Z/
Doniphan KS-Atchison KS-
830 AM CDT Tue Aug 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR SOUTHWESTERN DONIPHAN AND ATCHISON COUNTIES...
At 829 AM CDT, severe thunderstorms were located along a line
extending from near Highland to near Everest to near Wetmore, moving
southeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Atchison, Highland, Effingham, Lancaster, Muscotah, Denton,
Severance, Farmington, Huron, Leona, Arrington, Bendena and Cummings.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3965 9557 3965 9534 3985 9534 3991 9520
3958 9508 3958 9511 3954 9511 3950 9505
3946 9504 3942 9529 3942 9557
TIME...MOT...LOC 1329Z 333DEG 39KT 3984 9520 3967 9547 3960 9586
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Blair676
WWUS53 KEAX 311340
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
840 AM CDT Tue Aug 31 2021
KSC005-043-311400-
/O.CON.KEAX.SV.W.0128.000000T0000Z-210831T1400Z/
Doniphan KS-Atchison KS-
840 AM CDT Tue Aug 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR SOUTHWESTERN DONIPHAN AND ATCHISON COUNTIES...
At 839 AM CDT, severe thunderstorms were located along a line
extending from near Troy to near Effingham to near Circleville,
moving southeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Atchison, Effingham, Lancaster, Muscotah, Farmington, Huron,
Cummings, Arrington and Bendena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3968 9534 3979 9516 3958 9508 3958 9511
3954 9511 3950 9505 3946 9504 3942 9529
3942 9557 3965 9557 3965 9534
TIME...MOT...LOC 1339Z 333DEG 34KT 3977 9515 3960 9542 3953 9581
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Blair882
WWUS53 KEAX 311347
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
847 AM CDT Tue Aug 31 2021
KSC043-311356-
/O.CAN.KEAX.SV.W.0128.000000T0000Z-210831T1400Z/
Doniphan KS-
847 AM CDT Tue Aug 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DONIPHAN COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3953 9557 3958 9530 3965 9511 3963 9510
3958 9508 3958 9511 3954 9511 3950 9505
3946 9504 3942 9529 3942 9557 3948 9558
TIME...MOT...LOC 1346Z 334DEG 39KT 3964 9509 3947 9536 3940 9575
$$
KSC005-311400-
/O.CON.KEAX.SV.W.0128.000000T0000Z-210831T1400Z/
Atchison KS-
847 AM CDT Tue Aug 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR ATCHISON COUNTY...
At 846 AM CDT, severe thunderstorms were located along a line
extending from near Rushville to near Nortonville to near Mayetta,
moving southeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Atchison, Effingham, Lancaster, Farmington, Cummings and Arrington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3953 9557 3958 9530 3965 9511 3963 9510
3958 9508 3958 9511 3954 9511 3950 9505
3946 9504 3942 9529 3942 9557 3948 9558
TIME...MOT...LOC 1346Z 334DEG 39KT 3964 9509 3947 9536 3940 9575
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
BlairThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 5:35 AM CDT | Special Weather Statement | EAX | Doniphan | 40 min |
| Aug 31, 5:50 AM CDT | Special Weather Statement | EAX | Doniphan | 40 min |
| Aug 31, 8:01 AM CDT | Special Weather Statement | EAX | Doniphan | 29 min |
| Aug 31, 8:58 AM CDT | Special Weather Statement | EAX | Leavenworth, Wyandotte | 47 min |
| Aug 31, 9:26 AM CDT | Special Weather Statement | EAX | Johnson, Wyandotte | 49 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2021Every severe thunderstorm warning 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.