Alert archive / Pennsylvania / Flash Flood Warnings in 2006
Flash Flood Warning 66, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 29, 2006, 2:42 PM EDT for Berks County, Pennsylvania. It was in force for 3 hr. 3 reports 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 29, 2006, 2:42 PM EDT (18:42 UTC)
- Expired
- Aug 29, 2006, 5:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 135 km from the middle of the area, began a volume at 18:43 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 29, 2:45 PM EDT | FLASH FLOOD | Shillington, PA | SIGNIFICANT STREET FLOODING REPORTED ON ROUTE 222 IN SHILLINGTON. |
| Aug 29, 2:45 PM EDT | HEAVY RAIN 3 | Shillington, PA | 3.00 INCHES OF RAIN WAS REPORTED IN JUST 50 MINUTES IN SHILLINGTON. |
| Aug 29, 5:00 PM EDT | FLASH FLOOD | Shillington, PA | FLASH FLOODING OF STREETS AND SMALL STREAMS AND CREEKS WERE REPORTED IN SHILLINGTON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.7 hours before the alert went out and 90 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
- 21 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 934 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KPHI 291842 FFWPHI PAC011-292145- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 242 PM EDT TUE AUG 29 2006 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL BERKS COUNTY IN EASTERN PENNSYLVANIA * UNTIL 545 PM EDT * AT 237 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAINFALL OF NEARLY 2 INCHES PER HOUR OCCURRING ACROSS THE SOUTHEASTERN PORTION OF THE COUNTY. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WERNERSVILLE EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. LAT...LON 4019 7595 4023 7577 4037 7584 4036 7620 $$ GORSE
2 follow-up statements
000
WGUS71 KPHI 291918
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
318 PM EDT TUE AUG 29 2006
PAC011-292145-
BERKS PA-
318 PM EDT TUE AUG 29 2006
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR
SOUTHEASTERN BERKS COUNTY...
SIGNIFICANT STREET FLOODING HAS BEEN REPORTED ON ROUTE 222 IN
SHILLINGTON. THE TORRENTIAL RAIN PRODUCING THUNDERSTORM CONTINUES TO
SLOWLY SETTLE TO THE EAST, HOWEVER VERY HEAVY RAIN IS STILL FALLING
ACROSS THE SOUTHEASTERN PORTION OF BERKS COUNTY. RAPID RUNOFF WILL
CONTINUE TO PRODUCING AREAS OF FLOODING.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
LAT...LON 4014 7589 4021 7576 4029 7567 4038 7579
4031 7612
$$
GORSE000
WGUS71 KPHI 292101
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
500 PM EDT TUE AUG 29 2006
PAC011-292145-
BERKS PA-
500 PM EDT TUE AUG 29 2006
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR
SOUTHEASTERN BERKS COUNTY...
AT 455 PM, A TRAINED WEATHER SPOTTER IN SHILLINGTON REPORTED FLASH
FLOODING OF ROADS AND SMALL STREAMS. ADDITIONAL SHOWERS AND
THUNDERSTORMS MOVING THROUGH WILL ADD TO THE ALREADY RAPID RUNOFF.
THIS IS A DANGEROUS SITUATION. DO NOT DRIVE THROUGH FLOODED ROADS.
IF YOU LIVE NEAR A STREAM OR CREEK, MOVE TO HIGHER GROUND NOW
LAT...LON 4014 7589 4021 7576 4029 7567 4038 7579
4031 7612
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 2:14 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 61 min |
| Aug 29, 2:53 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 52 min |
| Aug 29, 3:37 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 68 min |
| Aug 29, 3:39 PM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Aug 29, 3:50 PM EDT | Flash Flood Warning | PHI | Montgomery | 3 hr |
| Aug 29, 4:15 PM EDT | Flash Flood Warning | PHI | Philadelphia | 3 hr |
| Aug 29, 5:43 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2006Every flash flood warning in 2006
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.