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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 Topeka, KS (TOP), 00Z. Its levels are in the table below.
Observed Sounding at Topeka, KS (TOP), for (4 h 27 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 (58)
Topeka, KS (TOP): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1001 mb270 m12.22.2000° 9 kt
1000 mb283 m12.02.0350° 8 kt
990 mb367 m11.20.2—
979 mb460 m10.40.4—
952 mb691 m8.1-0.4350° 19 kt
925 mb929 m5.8-1.2000° 20 kt
850 mb1613 m-0.7-2.6010° 21 kt
836 mb1745 m-1.7-3.7—
826 mb1842 m-0.0-14.0020° 27 kt
791 mb2188 m0.0-29.0—
762 mb2486 m-1.1-41.7005° 29 kt
751 mb2602 m-1.5-44.5—
720 mb2939 m2.4-46.6020° 49 kt
700 mb3166 m1.0-43.0015° 50 kt
664 mb3587 m-2.5-32.5—
633 mb3964 m-4.9-32.9—
619 mb4140 m-4.3-32.3—
597 mb4425 m-5.3-33.3—
584 mb4597 m-6.7-32.7—
568 mb4813 m-6.8-33.1345° 44 kt
549 mb5079 m-7.7-32.7355° 36 kt
500 mb5800 m-11.9-36.9345° 46 kt
483 mb6062 m-14.3-38.5340° 47 kt
460 mb6429 m-16.9-38.9—
447 mb6643 m-18.7-30.7—
432 mb6896 m-20.1-37.1—
400 mb7460 m-24.7-38.7340° 55 kt
375 mb7926 m-27.9-44.9—
359 mb8238 m-30.7-43.7—
341 mb8601 m-32.7-48.7—
327 mb8895 m-35.3-48.3—
316 mb9132 m-36.5-55.5—
300 mb9490 m-39.5-56.5340° 69 kt
290 mb9721 m-41.3-58.7340° 70 kt
278 mb10009 m-43.5-61.5—
260 mb10458 m-46.2-65.7335° 60 kt
250 mb10720 m-48.3-66.3330° 57 kt
238 mb11042 m-50.5-67.5—
227 mb11350 m-49.9-67.9—
212 mb11794 m-52.1-70.1—
200 mb12170 m-52.9-71.9310° 46 kt
182 mb12773 m-56.5-75.5295° 66 kt
162 mb13511 m-56.9-80.9—
152 mb13916 m-55.4-82.7305° 44 kt
150 mb14000 m-55.1-83.1300° 40 kt
135 mb14665 m-59.9-83.9—
121 mb15346 m-60.7-84.8265° 43 kt
111 mb15880 m-63.7-85.7285° 57 kt
100 mb16520 m-64.3-86.3300° 51 kt
90 mb17162 m-65.1-87.3315° 47 kt
80 mb17885 m-62.7-88.5330° 13 kt
70 mb18700 m-64.5-89.5285° 19 kt
59 mb19743 m-64.4-90.6305° 24 kt
47 mb21143 m-61.5-89.5305° 12 kt
36 mb22801 m-59.2-89.6310° 10 kt
26 mb24861 m-55.3-88.9235° 14 kt
16 mb27968 m-52.0-87.0250° 16 kt
8 mb32948 m-45.5-84.5—
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

Virginia 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.