Alert archive / Pennsylvania / Flash Flood Warnings in 2024
Flash Flood Warning 21, NWS State College, PA
NWS State College, PA issued this flash flood warning at Aug 18, 2024, 2:02 AM EDT for Clearfield County, Pennsylvania. It was in force for 118 min. 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 18, 2024, 2:02 AM EDT (06:02 UTC)
- Expired
- Aug 18, 2024, 4:00 AM EDT
- In force
- 118 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
County Clearfield County, PA
The radar
The State College radar (KCCX), 35 km from the middle of the area, began a volume at 06:04 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 18, 3:00 AM EDT | FLASH FLOOD | Clearfield, PA | Water across multiple roads in Clearfield. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 6.0 hours before the alert went out and 173 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
- 363 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 1314 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
291
WGUS51 KCTP 180602
FFWCTP
PAC033-180800-
/O.NEW.KCTP.FF.W.0021.240818T0602Z-240818T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service State College PA
202 AM EDT Sun Aug 18 2024
The National Weather Service in State College has issued a
* Flash Flood Warning for...
Central Clearfield County in central Pennsylvania...
* Until 400 AM EDT.
* At 202 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 inches of
rain have fallen. Additional rainfall amounts of 0.5 to 1.5 inches
are possible in the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Clearfield, Woodland, Curwensville, Hyde, Plymptonville, Lecontes
Mills, Grampian, Lumber City and Clearfield-Lawrence Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4123 7827 4123 7824 4123 7818 4122 7809
4118 7807 4083 7855 4093 7867 4123 7829
FLASH FLOOD...RADAR INDICATED
$$
Banghoff/Bauco1 follow-up statement
178
WGUS71 KCTP 180752
FFSCTP
Flash Flood Statement
National Weather Service State College PA
352 AM EDT Sun Aug 18 2024
PAC033-180802-
/O.EXP.KCTP.FF.W.0021.000000T0000Z-240818T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clearfield PA-
352 AM EDT Sun Aug 18 2024
...FLASH FLOOD WARNING WILL EXPIRE AT 4 AM EDT EARLY THIS MORNING
FOR CENTRAL CLEARFIELD COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 1200 AM EDT Monday for a
portion of central Pennsylvania.
&&
LAT...LON 4123 7827 4123 7824 4123 7818 4122 7809
4118 7807 4083 7855 4093 7867 4123 7829
$$
BanghoffThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 8:04 PM EDT | Flash Flood Warning | CTP | Blair, Centre, Huntingdon | 3 hr |
| Aug 17, 8:28 PM EDT | Special Weather Statement | CTP | Mifflin | 47 min |
| Aug 17, 8:34 PM EDT | Special Weather Statement | CTP | Potter | 26 min |
| Aug 17, 8:47 PM EDT | Flash Flood Warning | CTP | Centre, Huntingdon | 3 hr |
| Aug 17, 8:57 PM EDT | Special Weather Statement | CTP | Clearfield | 33 min |
| Aug 17, 8:57 PM EDT | Special Weather Statement | CTP | Potter | 33 min |
| Aug 17, 9:21 PM EDT | Areal Flood Advisory | CTP | McKean, Potter | 4 hr |
| Aug 17, 9:53 PM EDT | Special Weather Statement | CTP | Mifflin | 37 min |
| Aug 17, 10:32 PM EDT | Areal Flood Advisory | CTP | Cameron, Centre, Clearfield, Clinton | 4 hr |
| Aug 17, 10:58 PM EDT | Special Weather Statement | CTP | Mifflin | 32 min |
| Aug 18, 1:24 AM EDT | Areal Flood Advisory | CTP | Clearfield | 96 min |
| Aug 18, 2:15 AM EDT | Areal Flood Advisory | CTP | Blair, Centre, Huntingdon | 103 min |
| Aug 18, 2:45 AM EDT | Special Weather Statement | CTP | Centre | 30 min |
| Aug 18, 3:07 AM EDT | Areal Flood Advisory | CTP | Cameron, Centre, Clinton, Elk, Lycoming, Potter and 1 more | 3 hr |
| Aug 18, 5:33 AM EDT | Areal Flood Advisory | CTP | Tioga | 117 min |
| Aug 18, 11:01 AM EDT | Areal Flood Advisory | CTP | Potter, Tioga | 119 min |
| Aug 18, 1:29 PM EDT | Special Weather Statement | CTP | Dauphin | 31 min |
| Aug 18, 1:42 PM EDT | Special Weather Statement | CTP | Snyder, Union | 33 min |
| Aug 18, 2:00 PM EDT | Special Weather Statement | CTP | Schuylkill | 30 min |
| Aug 18, 2:02 PM EDT | Special Weather Statement | CTP | Dauphin | 28 min |
| Aug 18, 2:09 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Northumberland, Perry, Snyder | 51 min |
| Aug 18, 2:11 PM EDT | Special Weather Statement | CTP | Lycoming | 34 min |
| Aug 18, 3:54 PM EDT | Special Weather Statement | CTP | Lebanon | 36 min |
| Aug 18, 4:29 PM EDT | Areal Flood Advisory | CTP | Cumberland, Dauphin, York | 91 min |
| Aug 18, 5:15 PM EDT | Special Weather Statement | CTP | Cumberland | 30 min |
| Aug 18, 5:27 PM EDT | Special Weather Statement | CTP | Lancaster | 33 min |
| Aug 18, 5:42 PM EDT | Special Weather Statement | CTP | Cumberland, Dauphin | 33 min |
| Aug 18, 5:53 PM EDT | Areal Flood Advisory | CTP | Cumberland, Dauphin, York | 112 min |
| Aug 18, 6:13 PM EDT | Special Weather Statement | CTP | Lancaster | 32 min |
| Aug 18, 6:14 PM EDT | Special Weather Statement | CTP | Dauphin | 31 min |
| Aug 18, 7:12 PM EDT | Special Weather Statement | CTP | Lancaster | 33 min |
| Aug 18, 7:24 PM EDT | Special Weather Statement | CTP | Lancaster | 21 min |
| Aug 18, 7:32 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 58 min |
| Aug 18, 7:54 PM EDT | Areal Flood Advisory | CTP | Lancaster | 96 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2024Every flash flood warning in 2024
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.