Alert archive / Indiana / Flash Flood Watches in 2019

Flash Flood Watch 1, NWS Northern Indiana

April 30, 20196 counties in Indiana; Cass County, Michigan

NWS Northern Indiana issued this flash flood watch at Apr 30, 2019, 3:33 PM EDT for 6 counties in Indiana; Cass County, Michigan. It took effect at Apr 30, 2019, 7:00 PM EDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Apr 30, 2019, 3:33 PM EDT (19:33 UTC)
In effect from: Apr 30, 2019, 7:00 PM EDT
Expired: May 1, 2019, 9:57 AM EDT
In force: 15 hr
Issued by: NWS Northern Indiana
Flood severity: None

Counties Elkhart County, IN, Fulton County, IN, Marshall County, IN, Pulaski County, IN, Starke County, IN, White County, IN, Cass County, MI

The radar

The Northern Indiana radar (KIWX), 57 km from the middle of the area, began a volume at 19:36 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.6 hours before the alert went out and 226 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 914 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 289 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Northern Indiana wrote its last area forecast discussion before this flash flood watch went out at Apr 30, 1:54 PM EDT, 1 hour 39 minutes earlier.

Area forecast discussion, Apr 30, 1:54 PM EDT, 1 hour 39 minutes before

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Hazardous weather outlook, Apr 30, 4:37 AM EDT, 10 hours 56 minutes before

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The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 11:34 AM EDT	River Flood Warning	IWX	Fulton, Kosciusko, Marshall, Pulaski, Starke	7 days
Apr 30, 11:34 AM EDT	River Flood Warning	IWX	Carroll, Pulaski, White	6 days
Apr 30, 11:34 AM EDT	River Flood Warning	IWX	LaPorte, Saint Joseph, Starke	6 days
Apr 30, 11:34 AM EDT	River Flood Warning	IWX	Allen	65 hr
Apr 30, 5:35 PM EDT	Special Weather Statement	IWX	Elkhart	25 min
Apr 30, 7:45 PM EDT	Areal Flood Advisory	IWX	Fulton, LaPorte, Marshall, Pulaski, Starke	3 hr
Apr 30, 11:34 AM EDT	River Flood Warning	IWX	Williams	6 days

Nearby

Flash Flood Watches in Indiana, 2019 Flash Flood Watches in Michigan, 2019 Every flash flood watch in 2019

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.