Alert archive / Ohio / Special Weather Statements in 2021

Special Weather Statement, NWS Wilmington, OH

May 9, 2021Butler County, Ohio; Dearborn County, Indiana

NWS Wilmington, OH issued this special weather statement at May 9, 2021, 9:44 AM EDT for Butler County, Ohio; Dearborn County, Indiana. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 9, 2021, 9:44 AM EDT (13:44 UTC)
Expired: May 9, 2021, 10:15 AM EDT
In force: 31 min
Issued by: NWS Wilmington, OH

Counties Dearborn County, IN, Butler County, OH

The radar

The Cincinnati radar (KILN), 79 km from the middle of the area, began a volume at 13:47 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, 1.7 hours before the alert went out and 81 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: 1072 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 896 m²/s²
0-3 km storm-relative helicity: 1335 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

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

NWS Wilmington, OH wrote its last area forecast discussion before this special weather statement went out at May 9, 6:43 AM EDT, 3 hours 1 minute earlier.

Area forecast discussion, May 9, 6:43 AM EDT, 3 hours 1 minute before

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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, May 9, 5:13 AM EDT, 4 hours 31 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington OH
513 AM EDT Sun May 9 2021

INZ050-058-059-OHZ026-034-035-042>046-051>056-060>062-100915-
Wayne-Fayette IN-Union IN-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-
Union OH-Delaware-Miami-Champaign-Clark-Madison-Franklin OH-Licking-
Preble-Montgomery-Greene-
513 AM EDT Sun May 9 2021

This Hazardous Weather Outlook is for East Central Indiana, Central
Ohio and West Central Ohio.

.DAY ONE...Today and tonight.

Several rounds of showers and embedded thunderstorms will lead to
moderate to heavy rainfall at times today. This could lead to areal
and river flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Frost development is possible Monday night and Tuesday night,
primarily for areas north of the Ohio River.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

INZ066-073>075-080-KYZ089>100-OHZ063>065-070>074-077>082-088-100915-
Franklin IN-Ripley-Dearborn-Ohio-Switzerland-Carroll-Gallatin-Boone-
Kenton-Campbell-Owen-Grant-Pendleton-Bracken-Robertson-Mason-Lewis-
Fayette OH-Pickaway-Fairfield-Butler-Warren-Clinton-Ross-Hocking-
Hamilton-Clermont-Brown-Highland-Adams-Pike-Scioto-
513 AM EDT Sun May 9 2021

This Hazardous Weather Outlook is for Southeast Indiana, Northeast
Kentucky, Northern Kentucky, Central Ohio, South Central Ohio and
Southwest Ohio.

.DAY ONE...Today and tonight.

Scattered thunderstorms are expected this afternoon into the early
evening. A few of the stronger storms could become severe with
damaging wind gusts being the primary threat.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Frost development is possible Monday night and Tuesday night,
primarily for areas north of the Ohio River.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, May 9, 9:44 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Wilmington OH
944 AM EDT Sun May 9 2021

INZ066-073-074-OHZ070-077-091415-
Franklin IN-Ripley IN-Dearborn IN-Hamilton OH-Butler OH-
944 AM EDT Sun May 9 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN FRANKLIN...
NORTHEASTERN RIPLEY...DEARBORN...NORTHWESTERN HAMILTON AND WESTERN
BUTLER COUNTIES UNTIL 1015 AM EDT...

At 944 AM EDT, radar indicated a strong thunderstorm 9 miles north of
Moores Hill, moving northeast at 55 mph.

STORM HAZARDS INCLUDE...
Winds to 45 mph...
Pea size hail...

Locations impacted include...
Cincinnati, Hamilton, Fairfield, Oxford, Forest Park, Harrison, North
College Hill, Cheviot, Mount Healthy, Lawrenceburg, Greendale,
Bright, Hidden Valley, Ross, Cleves, Seven Mile, Shawnee, Moores
Hill, Taylor Creek and Miami Heights.

This includes the following Interstates...
 I-74 in Indiana between mile markers 154 and 171.
 I-74 in Ohio between mile markers 0 and 16.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

LAT...LON 3957 8455 3957 8452 3917 8455 3909 8510
      3934 8516
TIME...MOT...LOC 1344Z 244DEG 50KT 3925 8503

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 3:12 PM EDT	River Flood Advisory	ILN	Delaware, Franklin	17 hr
May 9, 3:39 PM EDT	Frost Advisory	ILN	Auglaize, Butler, Champaign, Clark, Darke, Delaware and 10 more	16 hr
May 9, 4:07 PM EDT	River Flood Warning	ILN	Shelby	11 hr
May 9, 6:33 PM EDT	River Flood Warning	ILN	Pickaway	62 hr

Nearby

Special Weather Statements in Ohio, 2021 Special Weather Statements in Indiana, 2021 Every special weather statement in 2021

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.