Excessive Heat in New York, July 21 to 23, 2011

Name: Excessive Heat in New York, July 21 to 23, 2011
Start: 2011-07-21T12:00
End: 2011-07-23T23:00
Location: New York

July 21 to 23, 2011 · NWS BGM · 18 events in 18 counties and zones

High pressure moved off the east coast of the United States, allowing extreme heat that had been building over the central part of the country to move east. For three days, high temperatures across much of central New York rose well up into the 90s,|and exceeded 100 degrees in many typically warmer valley locations.

Where it happened

Every event with a place to put it; 18 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 18

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BGM wrote it up.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before the first event at Jul 21, 11:09 AM EST, 51 minutes earlier.

Area forecast discussion, Jul 21, 11:09 AM EST, 51 minutes before

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Hazardous weather outlook, Jul 21, 9:05 AM EST, 2 hours 55 minutes before

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In the hours before

Local storm report, Jul 21, 7:14 AM EST, 4 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
814 AM EDT THU JUL 21 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0120 AM     TSTM WND DMG     1 W KRUM CORNER         42.49N  76.60W
07/19/2011                   TOMPKINS           NY   PUBLIC

            MANY TREES DOWN ON PERRY CITY ROAD.

&&

HEDEN

Local storm report, Jul 21, 7:16 AM EST, 4 hours 44 minutes before

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Local storm report, Jul 21, 7:33 AM EST, 4 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BINGHAMTON NY
833 AM EDT THU JUL 21 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 AM     TSTM WND DMG     RUSH                    41.78N  76.05W
07/19/2011                   SUSQUEHANNA        PA   EMERGENCY MNGR

            BARN DAMAGE ON STATE ROUTE 267. PIECES OF THE BARN
            BLOWN INTO THE ROAD. TREES AND WIRES ALSO DOWN AT THIS
            LOCATION. TREES ALSO DOWN ON STATE ROUTE 858...KEECH
            HILL ROAD...AND GAGE ROAD.

&&

CORRECTED REMARKS

HEDEN

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

18 excessive heat. Local standard time, as filed.

Excessive Heat, Broome

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Broome forecast zone
Reported by: Official NWS Observations
Coordinates: 42.160, -75.820 (the zone’s center; the record gives no point)

High temperatures across much of the county reached 95 to 100 degrees each day. The high temperature at the Binghamton airport reached 95 degrees on July 21st, breaking the previous record of 91 set in 1955. An all time high minimum temperature record was set on the 22nd with a minimum temperatures of 77 degrees. The three day period July 21st to 23rd was the warmest on record, with an average of 83.3 degrees. All three days had minimum temperatures of 70 degrees or more, and tied for third for the greatest number of consecutive days with lows of at least 70 degrees.

Excessive Heat, Chemung

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Chemung forecast zone
Reported by: Official NWS Observations
Coordinates: 42.141, -76.760 (the zone’s center; the record gives no point)

High temperatures across the county soared to near 100 degrees or higher each day. Both the cooperative observer in Chemung and the automated equipment at Elmira Regional Airport recorded a high temperature of 104 degrees on July 21st. This set a record at Elmira for the date, breaking the previous record of 97 degrees in 1955.

Excessive Heat, Chenango

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Chenango forecast zone
Reported by: Official NWS Observations
Coordinates: 42.494, -75.612 (the zone’s center; the record gives no point)

High temperatures across the county reached 90 to 100 degrees each day, with a high of 99 degrees reported by the cooperative observer in Sherburne on July 21st.

Excessive Heat, Cortland

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Cortland forecast zone
Reported by: Official NWS Observations
Coordinates: 42.595, -76.070 (the zone’s center; the record gives no point)

High temperatures across the county reached 90 to 100 degrees each day.

Excessive Heat, Onondaga

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Onondaga forecast zone
Reported by: Official NWS Observations
Coordinates: 43.006, -76.195 (the zone’s center; the record gives no point)

High temperatures across the county ranged from 90 to 100 degrees each day. On July 21st, the high temperature at Syracuse Hancock Airport reached 101 degrees, breaking the previous record for the date of 95 degrees in 1933.

Excessive Heat, Steuben

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Steuben forecast zone
Reported by: Official NWS Observations
Coordinates: 42.268, -77.384 (the zone’s center; the record gives no point)

High temperatures across the county reached 95 to 100 or greater each day. The cooperative observer in Bath recorded a high of 102 degrees on the 21st, and 103 degrees on the 22nd.

Excessive Heat, Tioga

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Tioga forecast zone
Reported by: Official NWS Observations
Coordinates: 42.170, -76.306 (the zone’s center; the record gives no point)

High temperatures across the county reached 95 to 100 degrees each day. The cooperative observer in Waverly recorded a high of 100 degrees on the 21st.

Excessive Heat, Southern Cayuga

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Southern Cayuga forecast zone
Reported by: Official NWS Observations
Coordinates: 43.010, -76.574 (the zone’s center; the record gives no point)

High temperatures across the county reached 95 to 100 degrees each day. The cooperative observer in Auburn recorded a high of 100 degrees on the 21st.

Excessive Heat, Yates

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Yates forecast zone
Reported by: Official NWS Observations
Coordinates: 42.633, -77.105 (the zone’s center; the record gives no point)

High temperatures across the county reached 95 to 100 degrees each day.

Excessive Heat, Delaware

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Delaware forecast zone
Reported by: Official NWS Observations
Coordinates: 42.198, -74.966 (the zone’s center; the record gives no point)

Temperatures across the county rose well into the 90s each day. The cooperative observer at East Sidney recorded a high of 96 degrees on the 21st and 95 degrees on the 22nd.

Excessive Heat, Madison

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Madison forecast zone
Reported by: Official NWS Observations
Coordinates: 42.913, -75.670 (the zone’s center; the record gives no point)

High temperatures across the county reached well up into the 90s each day.

Excessive Heat, Northern Oneida

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Northern Oneida forecast zone
Reported by: Official NWS Observations
Coordinates: 43.242, -75.436 (the zone’s center; the record gives no point)

High temperatures across the area reached well up into the 90s each day.

Excessive Heat, Otsego

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Otsego forecast zone
Reported by: Official NWS Observations
Coordinates: 42.634, -75.033 (the zone’s center; the record gives no point)

High temperatures across the county reached well up into the 90s each day. The cooperative observer in Unadilla recorded a high of 96 degrees on the 21st and 94 degrees on the 22nd.

Excessive Heat, Schuyler

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Schuyler forecast zone
Reported by: Official NWS Observations
Coordinates: 42.394, -76.875 (the zone’s center; the record gives no point)

High temperatures across the county reached well into the 90s. The cooperative observer in Mecklenburg recorded a high of 97 degrees on the 21st and 22nd.

Excessive Heat, Seneca

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Seneca forecast zone
Reported by: Official NWS Observations
Coordinates: 42.781, -76.824 (the zone’s center; the record gives no point)

High temperatures across the county reached well into the 90s each day.

Excessive Heat, Southern Oneida

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Southern Oneida forecast zone
Reported by: Official NWS Observations
Coordinates: 43.242, -75.436 (the zone’s center; the record gives no point)

High temperatures across the area reached well into the 90s. The Oneida County Regional Airport recorded a high of 99 degrees on the 21st.

Excessive Heat, Sullivan

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Sullivan forecast zone
Reported by: Official NWS Observations
Coordinates: 41.716, -74.768 (the zone’s center; the record gives no point)

High temperatures across the county reached well into the 90s. The cooperative observer in Bloomingburg recorded a high of 98 degrees on the 21st and 99 degrees on the 22nd.

Excessive Heat, Tompkins

When: July 21, 12:00 PM EST to July 23, 11:00 PM EST
Where: Tompkins forecast zone
Reported by: Official NWS Observations
Coordinates: 42.452, -76.474 (the zone’s center; the record gives no point)

High temperatures across the county reached well into the 90s each day. The cooperative observer at Freeville recorded a high of 99 degrees on the 21st.

What these are

Excessive Heat: Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in New York in 2011 Every state in 2011 This day in weather history Warnings in New York, July 2011

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 338429, 338431, 338433, 338434, 338441, 338443, 338444, 338446, 338447, 338453, 338454, 338455, 338456, 338457, 338459, 338461, 338472, 338474.