Alert archive / Pennsylvania / Flash Flood Warnings in 2014
Flash Flood Warning 13, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Aug 21, 2014, 5:12 PM EDT for Jefferson County, Pennsylvania. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 21, 2014, 5:12 PM EDT (21:12 UTC)
- Expired
- Aug 21, 2014, 8:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
County Jefferson County, PA
The radar
The State College radar (KCCX), 74 km from the middle of the area, began a volume at 21:15 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 21, 5:14 PM EDT | FLASH FLOOD | 2 S Sykesville, PA | ROUTE 119 CLOSED DUE TO FLOODING IN MULTIPLE LOCATIONS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KAGC), launched 12:00Z, 9.2 hours before the alert went out and 119 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.
- Mixed-layer CAPE
- 324 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1058 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
456
WGUS51 KPBZ 212112
FFWPBZ
PAC065-220015-
/O.NEW.KPBZ.FF.W.0013.140821T2112Z-140822T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
512 PM EDT THU AUG 21 2014
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN JEFFERSON COUNTY IN WEST CENTRAL PENNSYLVANIA...
* UNTIL 815 PM EDT
* AT 505 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN CAPABLE OF PRODUCING FLASH FLOODING OVER SOUTHEAST
JEFFERSON COUNTY.
* THE HEAVY RAIN WILL AFFECT MAINLY RURAL AREAS OF THE INDICATED
COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT HIGH WATER BY CALLING...412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER @NWSPITTSBURGH.
&&
LAT...LON 4091 7890 4091 7891 4110 7910 4106 7880
4091 7880 4090 7880
$$1 follow-up statement
437
WGUS71 KPBZ 212211
FFSPBZ
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
611 PM EDT THU AUG 21 2014
PAC065-220015-
/O.CON.KPBZ.FF.W.0013.000000T0000Z-140822T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON PA-
611 PM EDT THU AUG 21 2014
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR
JEFFERSON COUNTY IN WEST CENTRAL PENNSYLVANIA...
NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED THAT THE HEAVY RAIN
HAS MOVED OUT OF SOUTHERN JEFFERSON COUNTY. RUNOFF FROM THE
THUNDERSTORMS...HOWEVER...WILL CONTINUE TO CAUSE FLOODING. RADAR
ESTIMATES THAT UP TO 2.50 INCHES OF RAIN FELL DURING THE LATE
AFTERNOON.
JEFFERSON COUNTY EMERGENCY MANAGEMENT REPORTS THAT ROUTE 119 IS
CLOSED IN HENDERSON TOWNSHIP DUE TO FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
NEVER ATTEMPT TO DRIVE THROUGH FLOODED ROADWAYS.
PLEASE REPORT HIGH WATER BY CALLING...412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER @NWSPITTSBURGH.
&&
LAT...LON 4091 7890 4091 7891 4110 7910 4106 7880
4091 7880 4090 7880
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 8:13 PM EDT | Special Weather Statement | PBZ | Forest | 47 min |
| Aug 20, 8:34 PM EDT | Special Weather Statement | PBZ | Fayette | 41 min |
| Aug 20, 8:39 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 51 min |
| Aug 20, 9:04 PM EDT | Special Weather Statement | PBZ | Jefferson | 41 min |
| Aug 20, 9:51 PM EDT | Areal Flood Advisory | PBZ | Jefferson | 3 hr |
| Aug 21, 2:24 PM EDT | Special Weather Statement | PBZ | Mercer | 36 min |
| Aug 21, 3:09 PM EDT | Special Weather Statement | PBZ | Jefferson | 51 min |
| Aug 21, 3:50 PM EDT | Flash Flood Warning | PBZ | Jefferson | 5 hr |
| Aug 21, 3:53 PM EDT | Flash Flood Warning | PBZ | Mercer | 5 hr |
| Aug 21, 4:16 PM EDT | Tornado Warning | PBZ | Jefferson | 29 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2014Every flash flood warning in 2014
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.