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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Upton, NY (OKX), 00Z. Its levels are in the table below.
Observed Sounding at Upton, NY (OKX), for (3 h 56 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (53)
Upton, NY (OKX): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1003 mb20 m18.818.5220° 3 kt
1000 mb44 m18.217.8215° 11 kt
975 mb261 m17.417.1—
957 mb421 m19.019.0—
943 mb548 m18.416.6—
925 mb714 m21.416.4245° 42 kt
904 mb914 m21.214.9250° 40 kt
873 mb1219 m18.712.6255° 40 kt
850 mb1444 m17.011.0255° 41 kt
812 mb1829 m13.79.7260° 44 kt
783 mb2134 m11.18.6260° 41 kt
761 mb2375 m9.07.8—
728 mb2743 m6.74.0255° 43 kt
709 mb2959 m5.41.7—
700 mb3063 m4.60.8245° 47 kt
678 mb3323 m2.2-1.2—
650 mb3658 m0.2-4.4245° 58 kt
628 mb3939 m-1.9-6.7—
615 mb4105 m-3.1-9.1—
603 mb4267 m-3.2-14.5240° 59 kt
583 mb4528 m-4.1-17.1—
558 mb4877 m-5.7-21.4240° 63 kt
536 mb5182 m-7.0-25.2240° 60 kt
520 mb5425 m-7.1-29.1—
500 mb5730 m-8.7-32.7240° 74 kt
477 mb6096 m-10.9-32.9240° 75 kt
458 mb6401 m-12.8-32.8235° 77 kt
443 mb6654 m-14.1-35.1—
429 mb6896 m-15.1-41.1—
406 mb7315 m-17.2-30.4250° 79 kt
400 mb7420 m-17.7-27.7245° 82 kt
389 mb7620 m-18.9-27.1245° 82 kt
378 mb7842 m-20.5-26.5—
360 mb8203 m-22.7-33.7—
344 mb8534 m-25.1-39.3240° 72 kt
316 mb9144 m-28.6-47.3240° 80 kt
303 mb9449 m-30.4-49.2235° 91 kt
300 mb9520 m-30.9-48.9235° 99 kt
283 mb9929 m-34.5-48.5—
266 mb10357 m-37.7-52.7—
254 mb10668 m-40.1-54.2235° 94 kt
250 mb10780 m-40.9-54.9235° 89 kt
233 mb11257 m-42.3-60.3—
222 mb11582 m-45.0-62.8230° 90 kt
205 mb12109 m-49.3-65.3—
200 mb12270 m-50.3-66.3230° 88 kt
177 mb13056 m-56.3-71.3—
164 mb13536 m-59.5-73.5—
150 mb14090 m-63.1-76.1245° 81 kt
140 mb14512 m-65.5-78.5—
127 mb15103 m-65.9-78.9—
108 mb16083 m-69.9-81.9—
100 mb16540 m-70.9-81.9260° 47 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

Connecticut briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.