Alert archive / Kansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 99, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Jul 25, 2012, 4:20 PM CDT for Jackson County, Jefferson County, Shawnee County, Kansas. It was in force for 25 min. 1 report 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
- Jul 25, 2012, 4:20 PM CDT (21:20 UTC)
- Expired
- Jul 25, 2012, 4:45 PM CDT
- In force
- 25 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Jackson County, KS, Jefferson County, KS, Shawnee County, KS
The radar
The Topeka radar (KTWX), 62 km from the middle of the area, began a volume at 21:23 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 |
|---|---|---|---|
| Jul 25, 4:23 PM CDT | TSTM WND DMG | 4 Sse Hoyt, KS | PART OF ROOF DAMAGED AND POWER LINES DOWN AT 83RD AND NW TOPEKA BLVD...LIKELY DUE TO MICROBURST |
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, 9.3 hours before the alert went out and 31 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
- 480 J/kg
- Mixed-layer CIN
- -268 J/kg
- Mixed-layer LCL
- 1917 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
469
WUUS53 KTOP 252120
SVRTOP
KSC085-087-177-252145-
/O.NEW.KTOP.SV.W.0099.120725T2120Z-120725T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
420 PM CDT WED JUL 25 2012
THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN JACKSON COUNTY IN NORTHEAST KANSAS...
WEST CENTRAL JEFFERSON COUNTY IN NORTHEAST KANSAS...
NORTH CENTRAL SHAWNEE COUNTY IN EAST CENTRAL KANSAS...
* UNTIL 445 PM CDT
* AT 418 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HOYT...AND
MOVING NORTHEAST AT 35 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...
VALLEY FALLS...HOYT...MERIDEN AND OZAWKIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3937 9565 3936 9545 3923 9539 3911 9570
3920 9582
TIME...MOT...LOC 2120Z 226DEG 29KT 3919 9567
HAIL...<.75IN
WIND...60 MPH
$$
BOWEN2 follow-up statements
547
WWUS53 KTOP 252134
SVSTOP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
434 PM CDT WED JUL 25 2012
KSC177-252143-
/O.CAN.KTOP.SV.W.0099.000000T0000Z-120725T2145Z/
SHAWNEE KS-
434 PM CDT WED JUL 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SHAWNEE COUNTY
IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3916 9559 3922 9559 3922 9567 3924 9569
3934 9565 3936 9545 3935 9545 3923 9539
TIME...MOT...LOC 2133Z 229DEG 23KT 3924 9559
$$
KSC085-087-252145-
/O.CON.KTOP.SV.W.0099.000000T0000Z-120725T2145Z/
JEFFERSON KS-JACKSON KS-
434 PM CDT WED JUL 25 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
JACKSON AND WEST CENTRAL JEFFERSON COUNTIES UNTIL 445 PM CDT...
AT 428 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MERIDEN...AND
MOVING NORTHEAST AT 25 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...
MERIDEN...VALLEY FALLS AND OZAWKIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3916 9559 3922 9559 3922 9567 3924 9569
3934 9565 3936 9545 3935 9545 3923 9539
TIME...MOT...LOC 2133Z 229DEG 23KT 3924 9559
HAIL...<.75IN
WIND...60 MPH
$$
BOWEN165
WWUS53 KTOP 252143
SVSTOP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
443 PM CDT WED JUL 25 2012
KSC085-087-252153-
/O.EXP.KTOP.SV.W.0099.000000T0000Z-120725T2145Z/
JEFFERSON KS-JACKSON KS-
443 PM CDT WED JUL 25 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JACKSON AND WEST
CENTRAL JEFFERSON COUNTIES WILL EXPIRE AT 445 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 3916 9559 3922 9559 3922 9567 3924 9569
3934 9565 3936 9545 3935 9545 3923 9539
TIME...MOT...LOC 2143Z 231DEG 22KT 3926 9553
$$
BOWENThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 3:34 PM CDT | Special Weather Statement | TOP | Jackson | 26 min |
| Jul 25, 3:45 PM CDT | Special Weather Statement | TOP | Shawnee | 30 min |
| Jul 25, 5:58 PM CDT | Special Weather Statement | TOP | Republic | 32 min |
| Jul 25, 6:13 PM CDT | Special Weather Statement | TOP | Nemaha | 32 min |
| Jul 25, 6:17 PM CDT | Severe Thunderstorm Warning | TOP | Nemaha | 28 min |
| Jul 25, 6:33 PM CDT | Severe Thunderstorm Warning | TOP | Nemaha | 17 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.