Alert archive / Indiana / Flash Flood Watches in 2018

Flash Flood Watch 3, NWS Northern Indiana

June 22, 201816 counties in Indiana; 4 counties in Ohio

NWS Northern Indiana issued this flash flood watch at Jun 22, 2018, 12:33 PM EDT for 16 counties in Indiana; 4 counties in Ohio. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jun 22, 2018, 12:33 PM EDT (16:33 UTC)
Expired
Jun 22, 2018, 9:19 PM EDT
In force
9 hr
Issued by
NWS Northern Indiana
Flood severity
None

Counties Adams County, IN, Allen County, IN, Blackford County, IN, Cass County, IN, Fulton County, IN, Grant County, IN, Huntington County, IN, Jay County, IN, Marshall County, IN, Miami County, IN, Pulaski County, IN, Starke County, IN, Wabash County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allen County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH

The radar

The Northern Indiana radar (KIWX), 55 km from the middle of the area, began a volume at 16:33 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.6 hours before the alert went out and 218 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2018-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 649 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2018-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
649 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
726 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.1
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 Jun 22, 12:29 PM EDT, 4 minutes earlier.

Area forecast discussion, Jun 22, 12:29 PM EDT, 4 minutes before
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Hazardous weather outlook, Jun 22, 5:18 AM EDT, 7 hours 15 minutes before
Hazardous Weather Outlook
National Weather Service Northern Indiana
518 AM EDT Fri Jun 22 2018

INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005-
015-016-024-025-230930-
La Porte-St. Joseph IN-Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-
Pulaski-Marshall-Fulton IN-Kosciusko-Whitley-Allen IN-White-Cass IN-
Miami-Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-Berrien-
Cass MI-St. Joseph MI-Branch-Hillsdale-Williams-Fulton OH-Defiance-
Henry-Paulding-Putnam-Van Wert-Allen OH-
518 AM EDT Fri Jun 22 2018 /418 AM CDT Fri Jun 22 2018/

This hazardous weather outlook is for portions of southwest
Michigan...northern Indiana and northwest Ohio.

.DAY ONE...Today and Tonight

Showers and thunderstorms are expected today and tonight. Severe
weather is not expected, but areas south and east of US 24 could see
gusty winds within any stronger storms that develop this afternoon.
Otherwise, the primary threat will be heavy rain and localized
flooding, particularly along area rivers and streams or in areas that
have received greater rainfall amounts over the past 24 hours.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Showers and thunderstorms are possible Saturday and Sunday, and then
again Tuesday night into Thursday afternoon.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

LMZ043-046-230930-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
518 AM EDT Fri Jun 22 2018

This hazardous weather outlook is for portions of The Nearshore
Waters of Southeastern Lake Michigan.

.DAY ONE...Today and Tonight

Showers and thunderstorms are expected today and tonight, with heavy
rain being the main threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Showers and thunderstorms are possible Saturday and Sunday, and then
again Tuesday night into Thursday afternoon.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

In the hours before

Local storm report, Jun 22, 9:44 AM EDT, 2 hours 49 minutes before
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Special weather statement, Jun 22, 11:47 AM EDT, 46 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 9:37 PM EDTRiver Flood WarningIWXCass, Kosciusko, Miami, Wabash, Whitley3 days
Jun 21, 9:37 PM EDTRiver Flood WarningIWXLaPorte, Saint Joseph, Starke3 days
Jun 21, 11:42 PM EDTRiver Flood WarningIWXAllen22 hr
Jun 22, 6:47 AM EDTAreal Flood AdvisoryIWXElkhart, Marshall, Saint Joseph3 hr
Jun 22, 7:25 AM EDTRiver Flood WarningIWXAllen63 hr
Jun 22, 7:25 AM EDTRiver Flood WarningIWXAdams, Allen50 hr
Jun 22, 7:25 AM EDTRiver Flood WarningIWXAllen51 hr
Jun 22, 12:24 PM EDTAreal Flood AdvisoryIWXLaGrange, Steuben5 hr
Jun 22, 4:48 PM EDTSpecial Weather StatementIWXWells27 min
Jun 22, 6:03 PM EDTFlash Flood WarningIWXWells3 hr
Jun 22, 6:29 PM EDTFlash Flood WarningIWXCass3 hr
Jun 22, 7:55 PM EDTAreal Flood WarningIWXCass, Miami3 hr
Jun 22, 6:41 PM EDTSpecial Weather StatementIWXVan Wert34 min
Jun 22, 9:08 AM EDTAreal Flood WarningIWXBerrien6 hr
Jun 22, 3:31 PM EDTAreal Flood WarningIWXBerrien3 hr

Nearby

Flash Flood Watches in Indiana, 2018Flash Flood Watches in Ohio, 2018Every flash flood watch in 2018

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.