Alert archive / Pennsylvania / Areal Flood Advisories in 2021

Areal Flood Advisory 31, NWS Cleveland, OH

June 21, 2021Crawford County, Pennsylvania

NWS Cleveland, OH issued this areal flood advisory at Jun 21, 2021, 1:53 PM EDT for Crawford County, Pennsylvania. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Jun 21, 2021, 1:53 PM EDT (17:53 UTC)
Expired: Jun 21, 2021, 6:45 PM EDT
In force: 5 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 129 km from the middle of the area, began a volume at 17:53 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

Pittsburgh, PA (KPIT), launched 12:00Z, 5.9 hours before the alert went out and 142 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: 931 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 988 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.1

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Cleveland, OH wrote its last area forecast discussion before this areal flood advisory went out at Jun 21, 12:48 PM EDT, 1 hour 5 minutes earlier.

Area forecast discussion, Jun 21, 12:48 PM EDT, 1 hour 5 minutes before

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Hazardous weather outlook, Jun 21, 12:41 PM EDT, 1 hour 12 minutes before

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In the hours before

Local storm report, Jun 21, 10:55 AM EDT, 2 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1055 AM EDT MON JUN 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 AM     TSTM WND DMG     7 NNE MANSFIELD         40.85N 82.46W
06/21/2021                   RICHLAND           OH   TRAINED SPOTTER

            LARGE 200 YEAR OLD MAPLE TREE TOPPLED.
            DOWNED TWO TELEPHONE POLES. WIND ESTIMATED
            70 MPH.

&&

LOMBARDY

Local storm report, Jun 21, 11:02 AM EDT, 2 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1102 AM EDT MON JUN 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0636 AM     TSTM WND DMG     KIRTLAND                41.60N 81.34W
06/21/2021                   LAKE               OH   PUBLIC

            HEALTHY TREE DAMAGE. HEALTHY MAPLE TREES
            TOPPED. ALSO TWO HEALTHY MAPLES UPROOTED.

&&

LOMBARDY

Special weather statement, Jun 21, 11:47 AM EDT, 2 hours 6 minutes before

Special Weather Statement
National Weather Service Cleveland OH
1147 AM EDT Mon Jun 21 2021

OHZ011>013-211630-
Geauga-Lake-Cuyahoga-
1147 AM EDT Mon Jun 21 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WESTERN GEAUGA...
NORTHERN CUYAHOGA AND LAKE COUNTIES...

At 1147 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Euclid to near Parma. Movement was
northeast at 30 mph.

Wind gusts up to 50 mph are possible with these storms.

Locations impacted include...
Cleveland, Painesville, Willowick, Chardon, Fairport Harbor, Parma,
Lakewood, Euclid, Mentor, Cleveland Heights, Solon, Willoughby,
Eastlake, Warrensville Heights, South Russell, Highland Hills,
Timberlake, Chesterland, Garfield Heights and Shaker Heights.

LAT...LON 4138 8118 4137 8185 4149 8179 4149 8174
      4162 8150 4172 8137 4176 8129 4176 8124
      4178 8118
TIME...MOT...LOC 1547Z 242DEG 24KT 4160 8158 4141 8178

Jaszka

Special weather statement, Jun 21, 11:51 AM EDT, 2 hours 2 minutes before

Special Weather Statement
National Weather Service Cleveland OH
1151 AM EDT Mon Jun 21 2021

OHZ029-030-037-211630-
Richland-Ashland-Morrow-
1151 AM EDT Mon Jun 21 2021

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL RICHLAND...SOUTHERN
ASHLAND AND NORTHEASTERN MORROW COUNTIES...

At 1150 AM EDT, a strong thunderstorm was located over Lexington, or
near Mansfield, moving east at 30 mph.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include...
Mansfield, Ashland, Ontario, Lexington, Loudonville, Bellville,
Hayesville, Perrysville, Lucas, Jeromesville, Mifflin and
Mohicanville.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4064 8277 4071 8278 4071 8273 4078 8272
      4088 8220 4067 8218 4067 8222 4061 8222
TIME...MOT...LOC 1550Z 264DEG 26KT 4071 8258

Jaszka

Special weather statement, Jun 21, 12:13 PM EDT, 1 hour 40 minutes before

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Local storm report, Jun 21, 1:50 PM EDT, 3 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:59 PM EDT	Special Weather Statement	CLE	Lucas	16 min
Jun 20, 9:18 PM EDT	Special Marine Warning	CLE		70 min
Jun 20, 9:34 PM EDT	Special Weather Statement	CLE	Lucas	41 min
Jun 20, 10:02 PM EDT	Severe Thunderstorm Warning	CLE	Lucas, Wood	46 min
Jun 20, 10:44 PM EDT	Special Marine Warning	CLE		46 min
Jun 20, 10:54 PM EDT	Special Marine Warning	CLE		96 min
Jun 20, 11:03 PM EDT	Special Marine Warning	CLE		87 min
Jun 20, 11:52 PM EDT	Special Marine Warning	CLE		113 min
Jun 21, 12:18 AM EDT	Special Weather Statement	CLE	Lucas	42 min
Jun 21, 12:40 AM EDT	Special Weather Statement	CLE	Ottawa	50 min
Jun 21, 1:37 AM EDT	Special Marine Warning	CLE		113 min
Jun 21, 2:19 AM EDT	Special Marine Warning	CLE		116 min
Jun 21, 3:52 AM EDT	Severe Thunderstorm Warning	CLE	Lucas, Ottawa, Sandusky, Wood	68 min
Jun 21, 4:03 AM EDT	Special Marine Warning	CLE		86 min
Jun 21, 4:17 AM EDT	Special Weather Statement	CLE	Hancock, Wood	43 min
Jun 21, 4:57 AM EDT	Special Weather Statement	CLE	Erie, Hancock, Huron, Sandusky, Seneca, Wyandot	63 min
Jun 21, 5:05 AM EDT	Special Marine Warning	CLE		115 min
Jun 21, 5:17 AM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron, Sandusky, Seneca	43 min
Jun 21, 5:38 AM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Lorain	67 min
Jun 21, 6:14 AM EDT	Special Marine Warning	CLE		2 hr
Jun 21, 6:26 AM EDT	Severe Thunderstorm Warning	CLE	Geauga, Lake	49 min
Jun 21, 6:29 AM EDT	Special Weather Statement	CLE	Ashland, Medina, Portage, Summit, Wayne	31 min
Jun 21, 6:43 AM EDT	Severe Thunderstorm Warning	CLE	Geauga, Portage, Summit	47 min
Jun 21, 6:51 AM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Trumbull	54 min
Jun 21, 7:02 AM EDT	Special Weather Statement	CLE	Stark	43 min
Jun 21, 7:31 AM EDT	Special Weather Statement	CLE	Mahoning	44 min
Jun 21, 9:52 AM EDT	Special Weather Statement	CLE	Stark	23 min
Jun 21, 10:12 AM EDT	Special Weather Statement	CLE	Mahoning	48 min
Jun 21, 11:47 AM EDT	Special Weather Statement	CLE	Cuyahoga	43 min
Jun 21, 11:51 AM EDT	Special Weather Statement	CLE	Ashland, Richland	39 min
Jun 21, 12:13 PM EDT	Special Weather Statement	CLE	Geauga, Lake	47 min
Jun 21, 12:17 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Holmes, Richland, Wayne	43 min
Jun 21, 12:43 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Medina, Portage, Stark, Summit	47 min
Jun 21, 12:48 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Geauga, Trumbull	57 min
Jun 21, 12:52 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Geauga, Lake	34 min
Jun 21, 1:09 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Portage, Stark, Trumbull	54 min
Jun 21, 1:15 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula	60 min
Jun 21, 1:20 PM EDT	Areal Flood Advisory	CLE	Ashtabula	5 hr
Jun 21, 1:31 PM EDT	Severe Thunderstorm Warning	CLE	Stark	29 min
Jun 20, 10:45 PM EDT	Special Weather Statement	CLE	Erie	45 min
Jun 20, 11:19 PM EDT	Severe Thunderstorm Warning	CLE	Erie	26 min
Jun 21, 3:09 AM EDT	Special Weather Statement	CLE	Erie	66 min
Jun 21, 7:40 AM EDT	Special Weather Statement	CLE	Crawford, Erie	35 min
Jun 21, 2:06 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	54 min

Nearby

Areal Flood Advisories in Pennsylvania, 2021 Every areal flood advisory 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.