Alert archive / Pennsylvania / Flash Flood Warnings in 2019

Flash Flood Warning 68, NWS Pittsburgh, PA

July 7, 2019Fayette County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jul 7, 2019, 8:08 PM EDT for Fayette County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 7, 2019, 8:08 PM EDT (00:08 UTC)
Expired: Jul 7, 2019, 11:15 PM EDT
In force: 3 hr
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Flood severity: None

County Fayette County, PA

The radar

The Pittsburgh radar (KPBZ), 84 km from the middle of the area, began a volume at 00:08 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 00:00Z, 0.1 hours before the alert went out and 67 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: 166 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 34 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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this flash flood warning went out at Jul 7, 6:47 PM EDT, 1 hour 21 minutes earlier.

Area forecast discussion, Jul 7, 6:47 PM EDT, 1 hour 21 minutes before

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Hazardous weather outlook, Jul 7, 7:59 PM EDT, 9 minutes before

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In the hours before

Local storm report, Jul 7, 6:59 PM EDT, 1 hour 9 minutes before

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Local storm report, Jul 7, 7:04 PM EDT, 1 hour 4 minutes before

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Local storm report, Jul 7, 7:14 PM EDT, 54 minutes before

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Local storm report, Jul 7, 7:16 PM EDT, 52 minutes before

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Local storm report, Jul 7, 7:19 PM EDT, 49 minutes before

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Local storm report, Jul 7, 7:58 PM EDT, 10 minutes before

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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Nearby

Flash Flood Warnings in Pennsylvania, 2019 Every flash flood warning 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.