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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 Rapid City, SD (UNR), 00Z. Its levels are in the table below.
Observed Sounding at Rapid City, SD (UNR), for (3 h 52 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 (61)
Rapid City, SD (UNR): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
912 mb1029 m15.4-9.6175° 5 kt
892 mb1219 m14.3-8.7200° 15 kt
859 mb1524 m11.8-10.5215° 15 kt
850 mb1616 m11.0-11.0225° 13 kt
838 mb1734 m10.4-10.6—
798 mb2134 m8.1-22.7255° 14 kt
774 mb2390 m6.6-30.4—
741 mb2743 m5.3-29.0315° 10 kt
714 mb3048 m3.3-28.2305° 17 kt
700 mb3209 m2.2-27.8300° 12 kt
688 mb3353 m1.9-15.8320° 12 kt
662 mb3658 m1.2-17.4355° 15 kt
638 mb3954 m0.2-24.8—
621 mb4170 m-1.1-16.1—
605 mb4377 m-2.5-17.5—
578 mb4737 m-5.1-18.1—
568 mb4877 m-6.0-23.4340° 26 kt
556 mb5040 m-6.5-30.5—
546 mb5182 m-7.5-27.7330° 27 kt
525 mb5485 m-9.7-21.7—
506 mb5769 m-11.3-30.3—
500 mb5860 m-11.9-28.9340° 29 kt
485 mb6096 m-13.5-31.0335° 28 kt
466 mb6401 m-15.3-36.8345° 27 kt
447 mb6706 m-17.8-38.0345° 30 kt
429 mb7010 m-20.2-38.6340° 26 kt
412 mb7315 m-22.7-39.2345° 30 kt
400 mb7530 m-24.1-41.1340° 36 kt
384 mb7826 m-26.5-37.5—
361 mb8269 m-30.1-42.1—
348 mb8534 m-32.2-40.4340° 41 kt
319 mb9144 m-36.2-45.0340° 39 kt
305 mb9449 m-38.3-47.3345° 41 kt
300 mb9560 m-39.1-48.1345° 35 kt
266 mb10363 m-44.5-53.3350° 28 kt
255 mb10668 m-46.7-55.1335° 27 kt
250 mb10790 m-47.5-55.5325° 34 kt
238 mb11113 m-49.5-57.5—
221 mb11582 m-52.8-60.0330° 37 kt
211 mb11887 m-54.8-61.5340° 41 kt
200 mb12230 m-55.9-62.9340° 49 kt
183 mb12792 m-58.5-65.5—
173 mb13146 m-58.7-66.7—
163 mb13521 m-58.5-67.5—
153 mb13917 m-60.9-69.9—
150 mb14040 m-61.7-69.7330° 46 kt
139 mb14508 m-63.7-72.7—
127 mb15062 m-63.3-72.3—
112 mb15850 m-66.0-75.0320° 29 kt
101 mb16451 m-68.5-77.5300° 35 kt
100 mb16510 m-68.7-77.7300° 37 kt
89 mb17216 m-65.6-77.3300° 37 kt
79 mb17941 m-66.5-79.8305° 32 kt
69 mb18768 m-63.0-79.3315° 27 kt
59 mb19730 m-63.5-82.8305° 18 kt
48 mb21003 m-60.4-84.3355° 12 kt
38 mb22458 m-58.8-86.4330° 5 kt
28 mb24377 m-56.5-86.2145° 5 kt
18 mb27196 m-54.0-84.2040° 4 kt
8 mb32500 m-43.5-77.5350° 11 kt
7 mb33695 m-43.1-68.1—
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

Oregon 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.