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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 Davenport, IA (DVN), 00Z. Its levels are in the table below.
Observed Sounding at Davenport, IA (DVN), 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 (60)
Davenport, IA (DVN): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1001 mb229 m10.05.0345° 9 kt
1000 mb238 m10.44.4350° 16 kt
990 mb322 m10.04.0—
956 mb610 m7.22.4345° 24 kt
925 mb881 m4.60.9350° 23 kt
887 mb1219 m1.6-0.5000° 26 kt
854 mb1524 m-0.8-3.9000° 28 kt
850 mb1561 m-1.1-4.3005° 29 kt
836 mb1694 m-1.1-7.1—
822 mb1829 m-1.6-8.8010° 27 kt
792 mb2124 m-2.9-10.9—
780 mb2245 m-2.7-14.7—
761 mb2438 m-3.7-17.0005° 27 kt
732 mb2743 m-5.9-19.9000° 27 kt
704 mb3048 m-8.2-23.9345° 28 kt
700 mb3095 m-8.5-24.5350° 26 kt
677 mb3353 m-9.8-32.7350° 26 kt
664 mb3503 m-10.5-37.5—
651 mb3658 m-10.6-37.8350° 32 kt
632 mb3882 m-10.7-38.7—
621 mb4017 m-10.3-39.3—
602 mb4256 m-11.1-40.1—
592 mb4384 m-11.3-40.3—
578 mb4572 m-12.6-39.2015° 61 kt
555 mb4877 m-14.6-37.8015° 58 kt
544 mb5027 m-15.5-37.5—
519 mb5381 m-16.9-32.9—
500 mb5660 m-18.7-34.7015° 59 kt
483 mb5917 m-19.9-37.9—
471 mb6096 m-21.1-38.3005° 60 kt
455 mb6357 m-22.9-38.9—
445 mb6520 m-23.5-40.5—
434 mb6706 m-24.9-41.3005° 66 kt
413 mb7061 m-27.7-42.7—
400 mb7290 m-29.3-44.3010° 65 kt
382 mb7617 m-31.9-43.9—
366 mb7925 m-34.0-47.3005° 70 kt
350 mb8230 m-36.2-50.6000° 74 kt
335 mb8533 m-38.1-53.1—
323 mb8784 m-38.4-54.6000° 84 kt
309 mb9088 m-39.1-56.1—
300 mb9290 m-40.7-57.7005° 74 kt
280 mb9754 m-43.3-60.3355° 63 kt
268 mb10058 m-44.6-61.1345° 66 kt
250 mb10510 m-46.5-62.5355° 58 kt
236 mb10892 m-46.9-62.9—
226 mb11180 m-46.9-62.9—
216 mb11481 m-46.1-63.1—
203 mb11887 m-49.1-66.1320° 38 kt
200 mb11990 m-49.9-66.9315° 38 kt
188 mb12393 m-51.1-68.1—
177 mb12802 m-51.0-68.8315° 38 kt
164 mb13282 m-50.9-68.9—
154 mb13690 m-52.7-70.7—
150 mb13860 m-53.1-71.1290° 40 kt
139 mb14326 m-55.2-72.3280° 47 kt
129 mb14825 m-53.9-71.9—
115 mb15545 m-56.8-73.8270° 38 kt
105 mb16154 m-57.2-74.0270° 47 kt
100 mb16440 m-58.3-74.3275° 31 kt
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.