Alert archive / Missouri / Tornado Watches in 2017
Tornado Watch 99
The Storm Prediction Center issued this tornado watch at Mar 29, 2017, 3:48 PM CDT for 17 counties in Kansas; 40 counties in Missouri. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 29, 2017, 3:48 PM CDT (20:48 UTC)
- Expired
- Mar 29, 2017, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 57 counties
Allen County, KS, Anderson County, KS, Bourbon County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Douglas County, KS, Franklin County, KS, Johnson County, KS, Labette County, KS, Linn County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Osage County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Shannon County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO
The radar
The Pleasant Hill radar (KEAX), 94 km from the middle of the area, began a volume at 20:51 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
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 3:53 PM CDT | Severe Thunderstorm Warning | TOP | Jefferson, Osage, Shawnee | 37 min |
| Mar 29, 4:51 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Leavenworth, Wyandotte | 24 min |
| Mar 29, 5:15 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Leavenworth, Wyandotte | 30 min |
| Mar 29, 5:22 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Wyandotte | 38 min |
| Mar 29, 5:53 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson | 37 min |
| Mar 29, 7:14 PM CDT | Severe Thunderstorm Warning | SGF | Dent, Texas | 61 min |
| Mar 29, 7:27 PM CDT | Severe Thunderstorm Warning | TOP | Douglas, Jefferson, Shawnee | 20 min |
| Mar 29, 7:28 PM CDT | Severe Thunderstorm Warning | SGF | Ozark, Taney | 47 min |
| Mar 29, 7:47 PM CDT | Severe Thunderstorm Warning | SGF | Camden, Dallas, Laclede | 43 min |
| Mar 29, 8:16 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Ozark | 44 min |
| Mar 29, 8:17 PM CDT | Severe Thunderstorm Warning | SGF | Camden, Miller | 43 min |
| Mar 29, 8:40 PM CDT | Severe Thunderstorm Warning | SGF | Ozark | 50 min |
| Mar 29, 8:42 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Texas, Wright | 48 min |
| Mar 29, 8:44 PM CDT | Tornado Warning | SGF | Douglas | 46 min |
| Mar 29, 8:48 PM CDT | Severe Thunderstorm Warning | SGF | Camden, Laclede | 42 min |
| Mar 29, 9:18 PM CDT | Severe Thunderstorm Warning | SGF | Camden, Miller | 27 min |
| Mar 29, 9:23 PM CDT | Severe Thunderstorm Warning | SGF | Phelps, Texas | 34 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
Springfield, MO (KSGF), launched 12:00Z, 8.8 hours before the alert went out and 124 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
- 563 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 410 m²/s²
- 0-3 km storm-relative helicity
- 439 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
365
WWUS20 KWNS 292046
SEL9
SPC WW 292046
KSZ000-MOZ000-300400-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 99
NWS Storm Prediction Center Norman OK
350 PM CDT Wed Mar 29 2017
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Eastern Kansas
Western and south-central Missouri
* Effective this Wednesday afternoon and evening from 350 PM
until 1100 PM CDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...The air mass continues to gradually destabilize to the
east of a surface low and along/south of a northward-spreading warm
front across eastern Kansas and western Missouri. Severe hail may be
the most common risk initially. With time, a tornado risk may
increase particularly across parts of western/southern Missouri
where damaging winds will also be a concern.
The tornado watch area is approximately along and 75 statute miles
east and west of a line from 10 miles east northeast of Olathe KS to
50 miles south southeast of Springfield MO. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 98...
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 20035.
...GuyerSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 2:51 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 9 more | 2 hr |
| Mar 29, 6:08 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Cherokee, Crawford, Johnson and 2 more | 97 min |
Nearby
Tornado Watches in Missouri, 2017Tornado Watches in Kansas, 2017Every tornado watch in 2017
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.