Alert archive / New York / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 48, NWS Albany, NY
NWS Albany, NY issued this severe thunderstorm warning at Jul 29, 1999, 7:42 PM EDT for Montgomery County, New York. It was in force for 63 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 29, 1999, 7:42 PM EDT (23:42 UTC)
- Expired
- Jul 29, 1999, 8:45 PM EDT
- In force
- 63 min
- Issued by
- NWS Albany, NY
- Area
- Whole counties
County Montgomery County, NY
The radar
The Albany radar (KENX), 47 km from the middle of the area, began a volume at 23:45 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 |
|---|---|---|---|
| Jul 29, 7:42 PM EDT | Thunderstorm Wind | St Johnsville, NY |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 11.7 hours before the alert went out and 55 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
- 253 J/kg
- Mixed-layer CIN
- -283 J/kg
- Mixed-layer LCL
- 1289 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
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 severe thunderstorm 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 severe thunderstorm warning went out at Jul 29, 2:35 PM EDT, 5 hours 7 minutes earlier.
Area forecast discussion, Jul 29, 2:35 PM EDT, 5 hours 7 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ALBANY NY 235 PM EDT THU JUL 29 1999 .DISC... AT 200 PM A FEW TSTMS HAVE REDEVELOPED OVR ST LAWRENCE CTY. JUST WDLY SCT SHWRS/ISOLD TSTMS ELSW IN FA. WILL INCLUDE SLGT CHC TSTMS THRU THIS EVE ALL ZNS. OVERALL NOT MUCH CHANGE. WNW FLOW ALOFT OPENS UP OVR NERN US AND S/WVS EMBEDDED IN FLOW WKN AS THEY MOVE E. S/WV PUSHG INTO RGN ARND MID DAY FRI WILL PRBLY ENHANCE ACTVTY AND THEN PSBLY ANOTHER ONE AGN LT SAT OR SAT NGT. IN BETWEEN LOOKG FOR JUST RANDOM TSTMS WITH DIURNAL HEATING. SUNDAY/S FROPA WILL MARK A TRANSITION TO COOLER/MORE PLEASANT WX BEGINNING OF WORK WEEK. .ALY...NONE. GERWITZ
The office that day
Everything else NWS Albany, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 7:12 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Saratoga | 43 min |
| Jul 29, 7:31 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 64 min |
| Jul 29, 7:57 PM EDT | Severe Thunderstorm Warning | ALY | Schoharie | 73 min |
Nearby
Severe Thunderstorm Warnings in New York, 1999Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.