Alert archive / New York / Flash Flood Warnings in 1999

Flash Flood Warning 24, NWS Albany, NY

September 16, 1999Schenectady County, Schoharie County, New York

NWS Albany, NY issued this flash flood warning at Sep 16, 1999, 8:59 PM EDT for Schenectady County, Schoharie County, New York. It was in force for 7 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: Sep 16, 1999, 8:59 PM EDT (00:59 UTC)
Expired: Sep 17, 1999, 4:00 AM EDT
In force: 7 hr
Issued by: NWS Albany, NY
Area: Whole counties

Counties Schenectady County, NY, Schoharie County, NY

The radar

The Albany radar (KENX), 20 km from the middle of the area, began a volume at 01:03 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

Brookhaven, NY (KOKX), launched 00:00Z, 1.0 hours before the alert went out and 234 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 385 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Sep 16, 1:55 PM EDT, 7 hours 4 minutes earlier.

Area forecast discussion, Sep 16, 1:55 PM EDT, 7 hours 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBANY NY
200 PM THU SEPT 16 1999

.DISC...
NGM/ETA FURTHR W WITH FLOYD ON 12Z RUNS. SFC OBS SHW OLD FNT WELL
DEFINED N OF CNTR WITH 70-75 DP TROPICAL AIR TO ITS E ACRS CNTRL/SRN
DE AND SE HLF NJ. THIS MAY BE INDICATIVE OF TRACK NR OR EVEN JUST W
OF MORE WWD MODEL FCSTS IN SHORT TERM (3-6 HRS). FNT BENDS EWD S OF
LONG ISLAND SO A MORE ENE TO NE TURN IS LKLY EVENTLY. FRTHR W TRACK
THRU 00Z WL KEEP HVY RA THREAT GOING. NO CHNGS IN FFA ANTICIPATED.
WHILE FFG GUIDNC LOOKS HI...5-7 IN RA NEEDED FOR FLOODG...GIVEN DRY
CONDS THIS SUMMER WE SHUD BE ABLE TO TAKE A LOT. HRCN GLORIA PRODUCED
5+ IN RA WHEN IT PASSED W/O MUCH OF ANY FLOODG.

WITH FURTHR W TRACK LKLY...CONCERN GROWS FOR WIND PROBLEMS. LOW LVL
INVERSION WL KEEP MUCH OF STG WINDS FM MIXING DOWN TO VLY AREAS.
NGM/ETA FCSTG 40-50 KT WIND IN 925-900 MB LYR ACRS CTSKLS. WITH
SATURATED GROUND WINDS BLO HW CRITERIA CUD BRNG DOWN TREES. LTG
DETECTION SYS ALSO SHOWG CONVECTIVE ACTVTY SE NY WHICH CUD SERVE AS A
MECHANISM FOR MIXING DOWN STG WINDS. OPTIONS ARE MULTIPLE. CUD
JUSTIFY HWW WATCH/WARNING OR EVEN AN ADVSRY. WL OPT FOR HW WATCH AND
RESTRICT WATCH TO SRN CTSKLS...HI TRRN OF ERN COL AND DUT CTY AND
LITCHFIELD CTY.

STAFF HAS BEEN TRYING TO CONTINUOUSLY EVALUATE 88D PRECIP PRODUCT
ACCURACY. WE ARE IN TROPICAL Z-R MODE...BUT HAV NOTICED BRIGHT BAND
CONTAMINATION BLO 12 K FT FREEZG LVL. BOTTOM LINE IS INCONSISTENCY.
LOOKS LIKE OVERESTIMATG ON OUTER EDGES WHR BRGT BAND PROBLEMS....GOOD
NEAR RADAR AND UNDERESTIMATING IN BETWEEN.

.ALY...FLOOD WATCH...UNTIL NOON FRIDAY...FOR ALL AREAS
EXCEPT...EXCEPT...EXCEPT...NYZ032-033-038-039-040-042.

HI WIND WATCH THRU TONIGHT...NYZ058-063-061-066-MAZ001-CTZ001-

In the hours before

Local storm report, Sep 16, 8:23 PM EDT, 36 minutes before

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Local storm report, Sep 16, 8:28 PM EDT, 31 minutes before

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Local storm report, Sep 16, 8:35 PM EDT, 24 minutes before

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Local storm report, Sep 16, 8:36 PM EDT, 23 minutes before

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Local storm report, Sep 16, 8:51 PM EDT, 8 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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Local storm report, Sep 16, 8:52 PM EDT, 7 minutes before

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  <title>Service Notice</title>
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 16, 8:59 PM EDT	Flash Flood Warning	ALY	Saratoga, Washington	7 hr
Sep 17, 4:16 AM EDT	Flash Flood Warning	ALY	Albany, Saratoga, Schenectady, Schoharie	8 hr
Sep 17, 4:16 AM EDT	Flash Flood Warning	ALY	Columbia, Greene, Rensselaer	8 hr
Sep 17, 4:16 AM EDT	Flash Flood Warning	ALY	Warren, Washington	8 hr
Sep 16, 8:59 PM EDT	Flash Flood Warning	ALY	Bennington, Windham	7 hr
Sep 17, 4:16 AM EDT	Flash Flood Warning	ALY	Bennington, Windham	8 hr

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.