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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 Maniwaki, Quebec (WMW), 00Z. Its levels are in the table below.
Observed Sounding at Maniwaki, Quebec (WMW), for (5 h 6 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 (50)
Maniwaki, Quebec (WMW): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
986 mb189 m5.22.7000° 3 kt
972 mb305 m4.22.1315° 16 kt
937 mb610 m1.70.6325° 28 kt
925 mb718 m0.80.0330° 34 kt
903 mb914 m-0.7-1.2335° 34 kt
869 mb1219 m-2.9-3.1340° 34 kt
850 mb1392 m-3.7-4.2345° 32 kt
804 mb1829 m-6.0-7.3350° 31 kt
773 mb2134 m-7.6-9.4340° 33 kt
750 mb2372 m-8.9-11.1—
715 mb2743 m-9.7-13.5325° 31 kt
700 mb2905 m-10.1-14.6305° 31 kt
660 mb3353 m-10.4-14.0290° 32 kt
639 mb3606 m-10.5-13.5—
596 mb4137 m-14.3-15.2—
586 mb4267 m-14.8-17.2260° 43 kt
568 mb4500 m-15.7-20.7—
540 mb4877 m-18.8-23.0260° 48 kt
527 mb5059 m-20.3-24.1—
500 mb5450 m-18.5-39.5250° 82 kt
466 mb5977 m-16.7-54.7—
422 mb6706 m-20.7-49.7240° 132 kt
400 mb7110 m-22.9-46.9240° 133 kt
375 mb7582 m-25.9-46.9—
365 mb7777 m-26.7-32.7—
334 mb8417 m-30.7-30.9—
317 mb8789 m-30.9-49.9—
302 mb9144 m-33.0-39.7240° 149 kt
300 mb9180 m-33.3-39.3235° 150 kt
288 mb9464 m-35.7-40.4—
267 mb9982 m-40.5-43.6—
252 mb10363 m-39.3-63.6230° 141 kt
250 mb10430 m-39.7-64.7235° 145 kt
235 mb10852 m-41.7-67.7—
200 mb11940 m-46.7-75.7245° 135 kt
167 mb13114 m-53.9-79.9—
152 mb13716 m-55.4-81.5240° 120 kt
150 mb13800 m-55.7-81.7245° 109 kt
131 mb14656 m-56.5-83.5—
120 mb15208 m-59.3-84.3250° 86 kt
100 mb16350 m-59.5-85.5245° 62 kt
89 mb17069 m-59.7-87.3265° 55 kt
77 mb17983 m-59.7-87.7255° 54 kt
67 mb18898 m-58.1-87.9245° 21 kt
55 mb20117 m-57.8-87.9230° 32 kt
43 mb21641 m-57.8-88.2240° 21 kt
32 mb23470 m-56.8-88.4290° 18 kt
22 mb25908 m-54.2-87.0285° 10 kt
12 mb29870 m-51.6-86.5330° 10 kt
5 mb35347 m-45.3-84.3—
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia 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.