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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 Boise, ID (BOI), 00Z. Its levels are in the table below.
Observed Sounding at Boise, ID (BOI), 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 (53)
Boise, ID (BOI): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
925 mb874 m24.6-3.4170° 12 kt
911 mb1007 m22.4-3.6—
889 mb1219 m20.4-4.2160° 17 kt
850 mb1605 m16.8-5.2155° 16 kt
828 mb1829 m15.0-5.8145° 16 kt
814 mb1971 m13.8-6.2—
798 mb2134 m12.9-5.6115° 18 kt
770 mb2438 m11.4-16.8135° 17 kt
748 mb2678 m10.0-24.0—
729 mb2891 m9.2-19.8—
715 mb3048 m9.8-28.4200° 24 kt
700 mb3227 m9.0-29.0190° 22 kt
689 mb3353 m8.5-29.8190° 23 kt
664 mb3658 m7.2-31.6215° 17 kt
653 mb3799 m6.6-32.4—
616 mb4267 m3.5-32.8225° 19 kt
593 mb4572 m1.4-33.0225° 17 kt
571 mb4877 m-0.6-33.3240° 15 kt
552 mb5154 m-2.5-33.5—
540 mb5328 m-3.5-27.5—
529 mb5486 m-4.9-27.3250° 12 kt
515 mb5700 m-6.9-26.9—
500 mb5930 m-8.9-29.9230° 13 kt
489 mb6096 m-9.6-40.0225° 12 kt
469 mb6421 m-12.1-45.1—
438 mb6938 m-16.7-46.7—
426 mb7145 m-18.7-39.7—
414 mb7357 m-19.7-48.7—
400 mb7610 m-22.1-49.1230° 9 kt
390 mb7796 m-23.3-54.3—
352 mb8534 m-29.1-59.2275° 11 kt
337 mb8839 m-31.7-60.0270° 11 kt
323 mb9144 m-34.5-59.8285° 12 kt
312 mb9389 m-36.7-59.7—
300 mb9660 m-39.1-52.1265° 12 kt
289 mb9915 m-41.1-54.1—
278 mb10179 m-42.9-57.9—
264 mb10526 m-44.7-54.7—
252 mb10837 m-46.5-64.5—
250 mb10890 m-46.7-64.7265° 20 kt
240 mb11159 m-48.9-58.9—
227 mb11521 m-51.9-54.8—
209 mb12050 m-55.3-60.3—
200 mb12330 m-56.5-62.5260° 25 kt
184 mb12854 m-59.1-66.1—
168 mb13411 m-60.8-71.8270° 28 kt
152 mb14021 m-62.0-77.9265° 33 kt
150 mb14120 m-62.5-80.5260° 32 kt
138 mb14630 m-65.7-83.4255° 35 kt
125 mb15228 m-67.7-83.7260° 30 kt
113 mb15835 m-68.5-85.5—
102 mb16459 m-68.5-87.7265° 17 kt
100 mb16570 m-69.1-88.1225° 28 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.