Alert archive / Indiana / Tornado Watches in 2017
Tornado Watch 104
The Storm Prediction Center issued this tornado watch at Mar 30, 2017, 3:03 PM EDT for 48 counties in Indiana; 9 counties in Ohio. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 30, 2017, 3:03 PM EDT (19:03 UTC)
- Expired
- Mar 30, 2017, 8:32 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 57 counties
Adams County, IN, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Franklin County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jackson County, IN, Jay County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Wayne County, IN, Wells County, IN, Allen County, OH, Auglaize County, OH, Darke County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH, Van Wert County, OH
The radar
The Indianapolis radar (KIND), 36 km from the middle of the area, began a volume at 19:05 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
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
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 |
|---|---|---|---|---|
| Mar 30, 3:25 PM EDT | Tornado Warning | IND | Boone, Clinton, Montgomery | 35 min |
| Mar 30, 3:58 PM EDT | Severe Thunderstorm Warning | IND | Clinton, Howard | 32 min |
| Mar 30, 4:29 PM EDT | Severe Thunderstorm Warning | IND | Hamilton, Madison | 31 min |
| Mar 30, 4:57 PM EDT | Severe Thunderstorm Warning | IND | Clay, Parke, Putnam, Vigo | 48 min |
| Mar 30, 4:59 PM EDT | Severe Thunderstorm Warning | IND | Delaware, Madison | 46 min |
| Mar 30, 5:03 PM EDT | Severe Thunderstorm Warning | IND | Daviess, Knox | 42 min |
| Mar 30, 5:30 PM EDT | Severe Thunderstorm Warning | IWX | Adams, Blackford, Grant, Jay, Wells | 60 min |
| Mar 30, 5:31 PM EDT | Tornado Warning | IND | Delaware | 29 min |
| Mar 30, 5:35 PM EDT | Severe Thunderstorm Warning | IND | Fountain, Montgomery, Tippecanoe, Vermillion, Warren | 30 min |
| Mar 30, 5:45 PM EDT | Tornado Warning | IWX | Adams, Blackford, Jay, Wells | 45 min |
| Mar 30, 6:08 PM EDT | Severe Thunderstorm Warning | IND | Hamilton, Hendricks, Johnson, Marion, Morgan, Putnam | 52 min |
| Mar 30, 6:26 PM EDT | Severe Thunderstorm Warning | IWX | Adams | 49 min |
| Mar 30, 6:30 PM EDT | Severe Thunderstorm Warning | ILN | Mercer | 13 min |
| Mar 30, 6:54 PM EDT | Severe Thunderstorm Warning | IND | Hamilton, Hancock, Madison, Marion | 36 min |
| Mar 30, 7:25 PM EDT | Severe Thunderstorm Warning | IND | Delaware, Henry, Madison | 35 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
Lincoln, IL (KILX), launched 12:00Z, 7.1 hours before the alert went out and 206 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
- 847 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 347 m²/s²
- 0-3 km storm-relative helicity
- 373 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
005 WWUS20 KWNS 301901 SEL4 SPC WW 301901 INZ000-OHZ000-310200- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 104 NWS Storm Prediction Center Norman OK 305 PM EDT Thu Mar 30 2017 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Central and southern Indiana Western Ohio * Effective this Thursday afternoon and evening from 305 PM until 1000 PM EDT. * Primary threats include... A few tornadoes possible Scattered damaging wind gusts to 70 mph possible Isolated very large hail events to 2 inches in diameter possible SUMMARY...The air mass will continue to gradually destabilize along and south of a northward-moving warm front across Indiana and western Ohio. Aside from a damaging wind/some hail risk, moderately strong low-level shear will support the possibility of tornadoes, particularly near the warm front. The tornado watch area is approximately along and 55 statute miles north and south of a line from 10 miles west northwest of Terre Haute IN to 35 miles north of Dayton OH. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU4). 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 103... 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 450. Mean storm motion vector 23035. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 1:31 PM EDT | Severe Thunderstorm Watch | SPC | Gibson, Posey | 7 hr |
| Mar 30, 1:55 PM EDT | Mesoscale Discussion | SPC | Bartholomew, Boone, Brown, Clark, Clay, Clinton and 54 more | 2 hr |
| Mar 30, 4:27 PM EDT | Mesoscale Discussion | SPC | Blackford, Boone, Brown, Clay, Clinton, Daviess and 36 more | 33 min |
| Mar 30, 6:40 PM EDT | Mesoscale Discussion | SPC | Clark, Crawford, Dubois, Floyd, Gibson, Harrison and 7 more | 65 min |
| Mar 30, 7:05 PM EDT | Mesoscale Discussion | SPC | Adams, Bartholomew, Blackford, Boone, Brown, Daviess and 31 more | 55 min |
Nearby
Tornado Watches in Indiana, 2017Tornado Watches in Ohio, 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.