Alert archive / New York / Flash Flood Warnings in 1999

Flash Flood Warning 14, NWS Albany, NY

July 18, 1999Washington County, New York

NWS Albany, NY issued this flash flood warning at Jul 18, 1999, 3:30 PM EDT for Washington County, New York. It was in force for 60 min. 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 18, 1999, 3:30 PM EDT (19:30 UTC)
Expired: Jul 18, 1999, 4:30 PM EDT
In force: 60 min
Issued by: NWS Albany, NY
Area: Whole counties

County Washington County, NY

The radar

The Albany radar (KENX), 96 km from the middle of the area, began a volume at 19:30 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

Albany, NY (KALY), launched 12:00Z, 7.5 hours before the alert went out and 77 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: 1022 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1093 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Albany, NY wrote its last area forecast discussion before this flash flood warning went out at Jul 18, 2:18 PM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, Jul 18, 2:18 PM EDT, 1 hour 12 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBANY NY
215 PM SUN JUL 18 1999

.DISC...
IN SVR WX MODE ATTM AS SVR CELLS HAVE POPPED UP ACRS WASHINGTON CNTY
AND WERE MOVG SE....HAVE RECVD RPTS OF GOLF BALL SIZED HAIL ACRS THE
FT ANN/SALEM CTY LN.

.SYNOPSIS...
SFC BNDRY LYING ACRS ERN NY HAS TRIGGERED QUICK DVLPG PULSE TYPE
STRMS. USING THE CAROPOLO/CERNEGLIA/BLAES ET/VIL NOMOGRAM HV ISSUED
SVR TSTM WRNGS FOR WASHINGTON AND BENNINGTON COUNTIES RIGHT NOW. MRNG
ALB SNDGS INDCATE CAPE OF 3500 J/KG WITH A SLIGHT CAP AND LI OF -8.
CAP HAS BKN AND EXPLOSIVE DVLPMNT OCCURRING. DAYTIME HEATING HAS
CONTRIBUTED TO DSTBLZTN AND INCRSD CONVECTIVE DVLPMNT DURG THE PAST
FEW HRS. DIVERGENT UPR FLW FLDS AHD OF WK S/WV EMBEDDED WITHIN STGR
BND OF WESTERLIES...EVIDENT IN W/VP IMGRY...APPEARS TO BE ENHANCING
ACTVTY...WHICH IS XPCTED TO INTENSIFY DURG THE NXT FEW HRS. SHEAR
PROFILES ARE RATHER WK BUT MOVMNT OF STGR CELLS IN 20 TO 30 KT MEAN
ENVIRONMENTAL FLW RGM WL ENHANCE POT FOR GUSTY WINDS APPRCHG OR
XCEEDING SVR LIMITS.

AS FAR THE FCST GOES...WL FOLLOW CLOSE TO MDLS ATTM AND WILL REVIEW
LTR.

.ALY...NONE.

MAC

In the hours before

Local storm report, Jul 18, 1:54 PM EDT, 1 hour 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
154 PM EDT SUN JUL 18 1999

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0105 PM    LAKE NEBO                 NY   WIND DAMAGE
07/18/99   WASHINGTON                     TREES DOWN AND POWER LINES
                                          DOWN

0141 PM    FT ANN                    NY   1.75 INCH HAIL
07/18/99   WASHINGTON                     GOLF BALL SIZE HAIL ALONG
                                          THE FORT ANN AND SALEM
                                          COUNTY LINES

MAC

Local storm report, Jul 18, 1:54 PM EDT, 1 hour 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
154 PM EDT SUN JUL 18 1999

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0105 PM    LAKE NEBO                 NY   WIND DAMAGE
07/18/99   WASHINGTON                     TREES DOWN AND POWER LINES
                                          DOWN

0141 PM    FT ANN                    NY   1.75 INCH HAIL
07/18/99   WASHINGTON                     GOLF BALL SIZE HAIL ALONG
                                          THE FORT ANN AND SALEM
                                          COUNTY LINES

MAC

The office that day

Everything else NWS Albany, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 1:15 PM EDT	Severe Thunderstorm Warning	ALY	Washington	30 min
Jul 18, 2:20 PM EDT	Severe Thunderstorm Warning	ALY	Washington	60 min
Jul 18, 3:01 PM EDT	Severe Thunderstorm Warning	ALY	Saratoga	64 min
Jul 18, 3:15 PM EDT	Flash Flood Warning	ALY	Washington	3 hr
Jul 18, 3:30 PM EDT	Severe Thunderstorm Warning	ALY	Washington	60 min
Jul 18, 1:45 PM EDT	Severe Thunderstorm Warning	ALY	Bennington	60 min
Jul 18, 2:37 PM EDT	Severe Thunderstorm Warning	ALY	Bennington, Windham	93 min

Nearby

Flash Flood Warnings in New York, 1999 Every flash flood warning in 1999

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.