Alert archive / New York / Frost Advisories in 2020
Frost Advisory 4, NWS Buffalo, NY
NWS Buffalo, NY issued this frost advisory at May 20, 2020, 4:09 PM EDT for Allegany County, Cattaraugus County, New York. It took effect at May 21, 2020, 1:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- May 20, 2020, 4:09 PM EDT (20:09 UTC)
- In effect from
- May 21, 2020, 1:00 AM EDT
- Expired
- May 21, 2020, 8:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Buffalo, NY
Counties Allegany County, NY, Cattaraugus County, NY
The radar
The Buffalo radar (KBUF), 83 km from the middle of the area, began a volume at 20:10 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.2 hours before the alert went out and 80 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2141 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -64 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
168 WWUS71 KBUF 202009 NPWBUF URGENT - WEATHER MESSAGE National Weather Service Buffalo NY 409 PM EDT Wed May 20 2020 NYZ020-021-210415- /O.NEW.KBUF.FR.Y.0004.200521T0500Z-200521T1200Z/ Cattaraugus-Allegany- Including the cities of Olean and Wellsville 409 PM EDT Wed May 20 2020 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT THURSDAY... * WHAT...Temperatures in the low to mid 30s will result in frost formation. Coldest temperatures likely within sheltered valleys. * WHERE...Cattaraugus and Allegany counties. * WHEN...From 1 AM to 8 AM EDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
3 follow-up statements
286 WWUS71 KBUF 210226 NPWBUF URGENT - WEATHER MESSAGE National Weather Service Buffalo NY 1026 PM EDT Wed May 20 2020 NYZ020-021-211030- /O.CON.KBUF.FR.Y.0004.200521T0500Z-200521T1200Z/ Cattaraugus-Allegany- Including the cities of Olean and Wellsville 1026 PM EDT Wed May 20 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THURSDAY... * WHAT...Temperatures in the mid 30s will result in frost formation. * WHERE...Cattaraugus and Allegany counties. * WHEN...Until 8 AM EDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
741 WWUS71 KBUF 210839 NPWBUF URGENT - WEATHER MESSAGE National Weather Service Buffalo NY 439 AM EDT Thu May 21 2020 NYZ020-021-211200- /O.CON.KBUF.FR.Y.0004.000000T0000Z-200521T1200Z/ Cattaraugus-Allegany- Including the cities of Olean and Wellsville 439 AM EDT Thu May 21 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures in the mid 30s will result in frost formation. * WHERE...Cattaraugus and Allegany counties. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
027 WWUS71 KBUF 211145 NPWBUF URGENT - WEATHER MESSAGE National Weather Service Buffalo NY 745 AM EDT Thu May 21 2020 NYZ020-021-211245- /O.EXP.KBUF.FR.Y.0004.000000T0000Z-200521T1200Z/ Cattaraugus-Allegany- Including the cities of Olean and Wellsville 745 AM EDT Thu May 21 2020 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will continue to warm this morning. $$ TMA
Nearby
Frost Advisories in New York, 2020Every frost advisory in 2020
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.