Alert archive / Kansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 92, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Aug 8, 2012, 6:29 PM CDT for Leavenworth County, Kansas. It was in force for 31 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 8, 2012, 6:29 PM CDT (23:29 UTC)
- Expired
- Aug 8, 2012, 7:00 PM CDT
- In force
- 31 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Leavenworth County, KS
The radar
The Pleasant Hill radar (KEAX), 81 km from the middle of the area, began a volume at 23:31 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 8, 6:43 PM CDT | HAIL 0.88 | Leavenworth, KS | NICKEL TO QUARTER HAIL |
| Aug 8, 6:43 PM CDT | HAIL 1 | Leavenworth, KS | NICKEL TO QUARTER HAIL |
| Aug 8, 6:51 PM CDT | TSTM WND GST 60 | Leavenworth, KS | DIME SIZE HAIL VERY HEAVY RAINS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 8, 4:53 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Topeka, KS (KFOE), launched 12:00Z, 11.5 hours before the alert went out and 67 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
- 597 J/kg
- Mixed-layer CIN
- -298 J/kg
- Mixed-layer LCL
- 2032 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
133
WUUS53 KEAX 082329
SVREAX
KSC103-090000-
/O.NEW.KEAX.SV.W.0092.120808T2329Z-120809T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
629 PM CDT WED AUG 8 2012
THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL LEAVENWORTH COUNTY IN NORTHEAST KANSAS...
* UNTIL 700 PM CDT
* AT 627 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LANSING...
AND MOVING EAST AT 15 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
* LOCATIONS IMPACTED INCLUDE...
LEAVENWORTH...LANSING...FORT LEAVENWORTH AND FAIRMOUNT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3933 9506 3937 9495 3935 9491 3932 9491
3930 9490 3927 9485 3915 9495 3923 9510
TIME...MOT...LOC 2329Z 286DEG 13KT 3925 9498
HAIL...<.75IN
WIND...60 MPH
$$
DEROCHE3 follow-up statements
101
WWUS53 KEAX 082337
SVSEAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
637 PM CDT WED AUG 8 2012
KSC103-090000-
/O.CON.KEAX.SV.W.0092.000000T0000Z-120809T0000Z/
LEAVENWORTH KS-
637 PM CDT WED AUG 8 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
LEAVENWORTH COUNTY UNTIL 700 PM CDT...
AT 636 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LANSING...AND
MOVING EAST AT 15 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
LANSING AND FAIRMOUNT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3933 9506 3937 9495 3935 9491 3932 9491
3930 9490 3928 9487 3928 9486 3927 9485
3917 9494 3925 9507
TIME...MOT...LOC 2337Z 286DEG 13KT 3924 9494
HAIL...<.75IN
WIND...60 MPH
$$
DEROCHE425
WWUS53 KEAX 082348
SVSEAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
648 PM CDT WED AUG 8 2012
KSC103-090000-
/O.CON.KEAX.SV.W.0092.000000T0000Z-120809T0000Z/
LEAVENWORTH KS-
648 PM CDT WED AUG 8 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
LEAVENWORTH COUNTY UNTIL 700 PM CDT...
AT 645 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LANSING...AND
MOVING EAST AT 15 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
TREE DAMAGE HAS BEEN REPORTED IN THE TOWN OF LEAVENWORTH WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EXTREME EASTERN LEAVENWORTH COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3937 9495 3935 9491 3932 9491 3930 9490
3928 9487 3928 9486 3927 9485 3918 9493
3924 9501 3934 9502
TIME...MOT...LOC 2347Z 286DEG 13KT 3923 9490
HAIL...<.75IN
WIND...60 MPH
$$
DEROCHE037
WWUS53 KEAX 082357
SVSEAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
657 PM CDT WED AUG 8 2012
KSC103-090007-
/O.EXP.KEAX.SV.W.0092.000000T0000Z-120809T0000Z/
LEAVENWORTH KS-
657 PM CDT WED AUG 8 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LEAVENWORTH
COUNTY WILL EXPIRE AT 700 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA. HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1AM.
LAT...LON 3937 9495 3935 9491 3932 9491 3930 9490
3928 9487 3928 9486 3927 9485 3918 9493
3924 9501 3934 9502
TIME...MOT...LOC 2357Z 286DEG 13KT 3922 9486
$$
DEROCHEThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 4:59 PM CDT | Special Weather Statement | EAX | Linn | 46 min |
| Aug 8, 5:55 PM CDT | Special Weather Statement | EAX | Doniphan | 35 min |
| Aug 8, 6:09 PM CDT | Severe Thunderstorm Warning | EAX | Doniphan | 36 min |
| Aug 8, 6:15 PM CDT | Special Weather Statement | EAX | Atchison | 30 min |
| Aug 8, 6:18 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Doniphan | 27 min |
| Aug 8, 6:24 PM CDT | Special Weather Statement | EAX | Leavenworth | 36 min |
| Aug 8, 6:36 PM CDT | Severe Thunderstorm Warning | EAX | Doniphan | 24 min |
| Aug 8, 6:45 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Leavenworth | 30 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.