Alert archive / Indiana / Flood Watches in 2019

Flood Watch 3, NWS Indianapolis, IN

April 18, 201927 counties in Indiana

NWS Indianapolis, IN issued this flood watch at Apr 18, 2019, 3:45 AM EDT for 27 counties in Indiana. It took effect at Apr 18, 2019, 8:00 AM EDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Apr 18, 2019, 3:45 AM EDT (07:45 UTC)
In effect from: Apr 18, 2019, 8:00 AM EDT
Expired: Apr 18, 2019, 9:30 PM EDT
In force: 14 hr
Issued by: NWS Indianapolis, IN
Flood severity: None

All 27 counties

Boone County, IN, Brown County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Delaware County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Howard 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, Shelby County, IN, Sullivan County, IN, Tipton County, IN, Vigo County, IN

The radar

The Indianapolis radar (KIND), 26 km from the middle of the area, began a volume at 07:45 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 00:00Z, 7.8 hours before the alert went out and 188 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: 39 J/kg
Mixed-layer CIN: -375 J/kg
Mixed-layer LCL: 1740 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 300 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Indianapolis, IN wrote its last area forecast discussion before this flood watch went out at Apr 18, 2:39 AM EDT, 1 hour 6 minutes earlier.

Area forecast discussion, Apr 18, 2:39 AM EDT, 1 hour 6 minutes before

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Hazardous weather outlook, Apr 17, 9:14 PM EDT, 6 hours 31 minutes before

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The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 18, 6:01 AM EDT	Special Weather Statement	IND	Henry	29 min
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Shelby	49 hr
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Putnam	36 hr
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Marion	31 hr
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Owen	38 hr
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Hancock	21 days
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Johnson	21 days
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Marion, Morgan	3 days
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Howard	45 hr
Apr 18, 1:22 PM EDT	River Flood Warning	IND	Tippecanoe	4 days

Nearby

Flood Watches in Indiana, 2019 Every 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.