Alert archive / Kansas / Tornado Watches in 2008
Tornado Watch 229
The Storm Prediction Center issued this tornado watch at Apr 25, 2008, 1:13 AM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 25, 2008, 1:13 AM CDT (06:13 UTC)
- Expired
- Apr 25, 2008, 5:50 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 25 counties
Fremont County, IA, Montgomery County, IA, Page County, IA, Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Doniphan County, KS, Jackson County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Washington County, KS, Andrew County, MO, Atchison County, MO, Holt County, MO, Nodaway County, MO, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Pawnee County, NE, Richardson County, NE
The radar
The Topeka radar (KTWX), 121 km from the middle of the area, began a volume at 06:12 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 1:13 AM CDT | Severe Thunderstorm Warning | OAX | Nemaha, Otoe, Richardson | 19 min |
| Apr 25, 1:18 AM CDT | Flash Flood Warning | TOP | Republic, Washington | 3 hr |
| Apr 25, 1:23 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 52 min |
| Apr 25, 1:24 AM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson, Saline | 51 min |
| Apr 25, 1:30 AM CDT | Tornado Warning | TOP | Cloud, Republic, Washington | 30 min |
| Apr 25, 1:45 AM CDT | Severe Thunderstorm Warning | EAX | Atchison, Nodaway | 30 min |
| Apr 25, 1:46 AM CDT | Flash Flood Warning | OAX | Gage, Jefferson, Johnson, Pawnee | 3 hr |
| Apr 25, 1:52 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 38 min |
| Apr 25, 2:03 AM CDT | Severe Thunderstorm Warning | OAX | Gage, Johnson, Nemaha, Otoe, Pawnee | 27 min |
| Apr 25, 2:10 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 35 min |
| Apr 25, 2:14 AM CDT | Severe Thunderstorm Warning | EAX | Nodaway | 46 min |
| Apr 25, 2:28 AM CDT | Severe Thunderstorm Warning | OAX | Johnson, Nemaha, Otoe, Pawnee, Richardson | 62 min |
| Apr 25, 3:06 AM CDT | Severe Thunderstorm Warning | EAX | Andrew, Atchison, Holt, Nodaway | 39 min |
| Apr 25, 3:43 AM CDT | Severe Thunderstorm Warning | EAX | Andrew, Gentry, Holt, Nodaway | 47 min |
| Apr 25, 3:50 AM CDT | Severe Thunderstorm Warning | TOP | Brown, Jackson, Nemaha | 40 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 6.2 hours before the alert went out and 147 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
- 956 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 777 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 250615
SEL9
SPC WW 250615
IAZ000-KSZ000-MOZ000-NEZ000-251200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 229
NWS STORM PREDICTION CENTER NORMAN OK
115 AM CDT FRI APR 25 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST IOWA
NORTHEASTERN KANSAS
NORTHWEST MISSOURI
SOUTHEAST NEBRASKA
EFFECTIVE THIS FRIDAY MORNING FROM 115 AM UNTIL 700 AM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST OF CONCORDIA
KANSAS TO 35 MILES SOUTHEAST OF SHENANDOAH IOWA. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU9).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 227...WW 228...
DISCUSSION...ISOLATED BUT POTENTIALLY STRONG TORNADOES POSSIBLE
OVERNIGHT INVOF WARM FRONT ACROSS THE LWR MO VLY...WHERE
INCREASINGLY MOIST 70+ KT SSWLY LLJ WILL IMPINGE ON
SLOWLY-RETREATING OUTFLOW BOUNDARY. A TORNADO THREAT WILL ALSO
EXIST AS LONG-LIVED...ISOLATED...AND APPARENTLY SFC-BASED SUPERCELL
NOW APPROACHING CNK CONTINUES E INTO INCREASINGLY MOIST LOW-LEVEL
ENVIRONMENT.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26030.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 12:07 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Cass, Clarke, Dallas, Decatur and 15 more | 7 hr |
| Apr 25, 12:55 AM CDT | Mesoscale Discussion | SPC | Page | 35 min |
| Apr 25, 2:24 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Dallas, Decatur and 14 more | 66 min |
| Apr 25, 3:18 AM CDT | Mesoscale Discussion | SPC | Fremont, Montgomery, Page | 57 min |
| Apr 25, 4:22 AM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Cedar, Clarke, Clinton, Davis and 31 more | 23 min |
| Apr 25, 4:51 AM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clinton and 23 more | 5 hr |
| Apr 25, 9:10 AM CDT | Mesoscale Discussion | SPC | Clinton, Jackson, Scott | 65 min |
| Apr 25, 12:21 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Davis, Delaware, Des Moines, Henry and 14 more | 54 min |
| Apr 25, 1:27 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Des Moines, Dubuque, Henry, Iowa and 12 more | 7 hr |
| Apr 25, 3:28 PM CDT | Mesoscale Discussion | SPC | Clinton, Louisa, Scott | 62 min |
| Apr 25, 3:41 PM CDT | Tornado Watch | SPC | Cedar, Clinton, Des Moines, Dubuque, Jackson, Jones and 4 more | 4 hr |
| Apr 25, 5:18 PM CDT | Mesoscale Discussion | SPC | Clinton, Louisa, Scott | 57 min |
| Apr 25, 6:01 PM CDT | Mesoscale Discussion | SPC | Clinton, Louisa, Scott | 59 min |
| Apr 24, 8:55 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Gove, Graham, Logan, Norton and 6 more | 95 min |
| Apr 24, 10:20 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Clay, Cloud, Dickinson, Geary, Jackson and 14 more | 7 hr |
| Apr 24, 11:55 PM CDT | Mesoscale Discussion | SPC | Brown, Clay, Cloud, Dickinson, Geary, Jackson and 14 more | 65 min |
| Apr 25, 5:39 AM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Jackson | 36 min |
| Apr 25, 6:38 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 17 more | 67 min |
| Apr 25, 2:15 PM CDT | Mesoscale Discussion | SPC | Barry, Camden, Christian, Dallas, Dent, Douglas and 13 more | 90 min |
| Apr 25, 6:40 PM CDT | Mesoscale Discussion | SPC | Butler, Carter, Oregon, Reynolds, Ripley, Shannon and 1 more | 65 min |
| Apr 25, 6:06 AM CDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boyd, Brown, Garfield, Holt and 5 more | 6 hr |
Nearby
Tornado Watches in Kansas, 2008Tornado Watches in Nebraska, 2008Tornado Watches in Missouri, 2008Every tornado watch in 2008
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.