Alert archive / Kansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 1, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Feb 20, 2012, 4:55 PM CST for Cloud County, Ottawa County, Kansas. It was in force for 24 min. 6 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
- Feb 20, 2012, 4:55 PM CST (22:55 UTC)
- Expired
- Feb 20, 2012, 5:19 PM CST
- In force
- 24 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cloud County, KS, Ottawa County, KS
The radar
The Topeka radar (KTWX), 126 km from the middle of the area, began a volume at 22:55 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 |
|---|---|---|---|
| Feb 20, 4:55 PM CST | HAIL 0.88 | 1 N Minneapolis, KS | LARGEST STONE WAS NICKEL SIZED. HIGHWAY 81 NORTH OF MINNEAPOLIS HAD HAIL 1 INCH DEEP ON THE ROADWAY. |
| Feb 20, 4:58 PM CST | HAIL 0.5 | 5 E Delphos, KS | HAIL COVERING CROUND ABOUT 2 INCHES DEEP OF PEA TO DIME SIZE HAIL. ALSO REPORTED SLOW MOVING TRAFFIC ON 81 HWY DUE TO THE DEEP HAIL. |
| Feb 20, 4:58 PM CST | HAIL 0.88 | Minneapolis, KS | HAIL NEARLY COVERING THE GROUND |
| Feb 20, 5:00 PM CST | HAIL 1 | 5 Ene Delphos, KS | QUARTER SIZE HAIL COVERING THE GROUND. HAIL WAS STILL PRESENT ON THE GROUND FOR 3 HOURS AFTER THE EVENT OCCURRED. |
| Feb 20, 5:05 PM CST | HAIL 1 | 5 Ne Delphos, KS | COVERING GROUND |
| Feb 20, 5:18 PM CST | HAIL 0.25 | 5 Sse Concordia, KS | HAIL IS COVERING THE GROUND ALMOST AN INCH DEEP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 10.9 hours before the alert went out and 175 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 852 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 295 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
593
WUUS53 KTOP 202255
SVRTOP
KSC029-143-202330-
/O.NEW.KTOP.SV.W.0001.120220T2255Z-120220T2330Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
455 PM CST MON FEB 20 2012
THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN CLOUD COUNTY IN NORTH CENTRAL KANSAS...
NORTH CENTRAL OTTAWA COUNTY IN NORTH CENTRAL KANSAS...
* UNTIL 530 PM CST
* AT 450 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 5 MILES
SOUTHEAST OF DELPHOS...OR 6 MILES NORTH OF MINNEAPOLIS...MOVING
NORTHEAST AT 45 MPH.
* LOCATIONS IMPACTED INCLUDE...
AURORA...
DELPHOS...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE FOR LARGE HAIL AS WELL
AS DEADLY CLOUD TO GROUND LIGHTNING.
STAY TUNED TO WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE LATEST
SEVERE WEATHER INFORMATION.
&&
LAT...LON 3953 9768 3952 9736 3926 9749 3907 9769
3924 9783
TIME...MOT...LOC 2255Z 216DEG 38KT 3925 9768
WIND...HAIL 60MPH 1.00IN
$$
BLAIR2 follow-up statements
085
WWUS53 KTOP 202310
SVSTOP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
510 PM CST MON FEB 20 2012
KSC029-143-202330-
/O.CON.KTOP.SV.W.0001.000000T0000Z-120220T2330Z/
OTTAWA-CLOUD-
510 PM CST MON FEB 20 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CST
FOR SOUTHEASTERN CLOUD AND NORTH CENTRAL OTTAWA COUNTIES...
AT 504 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM
SPOTTERS CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF
PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 11 MILES
SOUTHWEST OF AURORA...OR 15 MILES NORTH OF MINNEAPOLIS...MOVING
NORTHEAST AT 40 MPH.
LOCATIONS IMPACTED INCLUDE...
AURORA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST SEVERE WEATHER INFORMATION.
&&
LAT...LON 3953 9768 3952 9737 3951 9737 3923 9751
3923 9764 3931 9775
TIME...MOT...LOC 2309Z 208DEG 36KT 3938 9764
WIND...HAIL <50MPH 1.00IN
$$
BLAIR371
WWUS53 KTOP 202319
SVSTOP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
519 PM CST MON FEB 20 2012
KSC029-143-202330-
/O.CAN.KTOP.SV.W.0001.000000T0000Z-120220T2330Z/
OTTAWA-CLOUD-
519 PM CST MON FEB 20 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLOUD AND NORTH
CENTRAL OTTAWA COUNTIES HAS BEEN CANCELLED...
AT 520 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE
SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO
LONGER SEVERE...THUS THE WARNING HAS BEEN CANCELLED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.
STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST SEVERE WEATHER INFORMATION.
&&
LAT...LON 3953 9768 3952 9737 3951 9737 3923 9751
3923 9764 3931 9775
TIME...MOT...LOC 2320Z 208DEG 36KT 3948 9757
$$
BLAIRThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 4:45 PM CST | Special Weather Statement | TOP | Ottawa | 30 min |
| Feb 20, 5:18 PM CST | Special Weather Statement | TOP | Lyon | 42 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.