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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 Pickle Lake, Ontario (WPL), 00Z. Its levels are in the table below.
Observed Sounding at Pickle Lake, Ontario (WPL), for (5 h 5 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 (57)
Pickle Lake, Ontario (WPL): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
979 mb386 m3.2-2.8265° 9 kt
953 mb610 m1.4-3.7275° 15 kt
925 mb854 m-0.5-4.6270° 19 kt
885 mb1205 m-3.9-6.0—
854 mb1485 m-5.9-9.2—
850 mb1522 m-5.7-11.7310° 26 kt
840 mb1615 m-4.5-17.5—
817 mb1829 m-5.4-15.6305° 28 kt
786 mb2134 m-7.3-20.2310° 29 kt
756 mb2438 m-9.1-25.1315° 29 kt
737 mb2634 m-10.5-24.5—
727 mb2743 m-11.0-18.6310° 36 kt
711 mb2910 m-11.9-15.4—
700 mb3029 m-11.7-14.6320° 50 kt
645 mb3650 m-15.7-20.7—
609 mb4080 m-19.1-22.4—
594 mb4267 m-19.7-22.6330° 58 kt
572 mb4544 m-20.7-23.0—
554 mb4781 m-19.3-21.8—
525 mb5182 m-20.0-22.3325° 74 kt
506 mb5452 m-20.5-22.6—
500 mb5540 m-21.3-23.1330° 78 kt
463 mb6096 m-25.6-26.3330° 81 kt
441 mb6455 m-28.3-28.4—
429 mb6652 m-28.9-29.7—
418 mb6838 m-30.1-39.1—
408 mb7010 m-31.3-37.3—
400 mb7150 m-32.5-38.5335° 88 kt
374 mb7620 m-34.8-51.2340° 96 kt
347 mb8143 m-38.3-47.3—
331 mb8467 m-40.9-58.9—
310 mb8910 m-44.3-52.3—
300 mb9130 m-45.3-55.3340° 126 kt
285 mb9469 m-47.7-58.7—
270 mb9823 m-50.3-63.3—
258 mb10117 m-52.3-59.3—
250 mb10320 m-53.5-64.5345° 133 kt
237 mb10668 m-55.6-66.6345° 128 kt
226 mb10973 m-52.6-69.2340° 126 kt
205 mb11582 m-54.0-74.0345° 93 kt
200 mb11750 m-53.3-76.3330° 74 kt
187 mb12192 m-53.4-78.5320° 77 kt
175 mb12611 m-49.9-80.9—
155 mb13411 m-53.3-82.7325° 49 kt
150 mb13610 m-54.1-83.1310° 66 kt
135 mb14288 m-51.1-83.1—
123 mb14888 m-53.9-83.9—
111 mb15545 m-52.8-84.3320° 50 kt
100 mb16220 m-51.7-84.7315° 44 kt
80 mb17678 m-54.9-85.9315° 46 kt
70 mb18556 m-53.5-86.5—
54 mb20117 m-56.6-87.4305° 21 kt
43 mb21641 m-54.6-87.0320° 20 kt
32 mb23470 m-57.0-88.2270° 14 kt
20 mb26510 m-53.3-86.3285° 11 kt
10 mb31010 m-48.7-84.7305° 14 kt
4 mb36663 m-42.9-82.9—
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.